Heating-Air Conditioning

The Importance of Regular Car Air Conditioning System Checks

August 14, 2024 by Denver Express Car Care

It’s 90 degrees out, and the thermometer keeps climbing. We’re on track for breaking records this summer.

Nothing feels better than jumping into your car and feeling a blast of cool air from the vents as you drive down the road.

But what if your air conditioning system isn’t working? Regular air conditioning checks can ensure you’ll never face the heat with a system that isn’t working. Let’s find out a little bit more.

Signs Your Car’s Air Conditioning System Is Malfunctioning

Weak Airflow

One of the most common indicators is weak airflow. This happens over time. The air feels weaker or inconsistent, even when the AC is set to its highest setting. Weak airflow often points to problems with the blower fan, which may be worn out or obstructed by debris. It could also indicate a blockage in the air ducts or a failing ventilation system. Over time, dust and debris can accumulate in the AC vents and filters, restricting the flow of air. If left unchecked, weak airflow can lead to more significant issues, reducing the overall efficiency of your car’s AC system and leaving you uncomfortable during your drives.

Warm Air

When your car’s air conditioning system blows warm air instead of cold, it can be a sign of several potential issues. Warm air may indicate low refrigerant levels, which could be due to a leak in the system. The refrigerant is essential for absorbing heat and cooling the air before it reaches the cabin. A faulty compressor is another common cause, as it is responsible for circulating the refrigerant through the system. If the compressor is damaged or not functioning properly, it cannot effectively cool the air. Other causes might include a malfunctioning condenser or an issue with the cooling fans. It’s essential to address this problem quickly, as continued use of the AC under these conditions can lead to more extensive damage to the system.

The Importance of Regular Car Air Conditioning System Checks

Strange Noises

Unusual noises from your car’s air conditioning system can be alarming and are often a sign of mechanical problems. Rattling sounds may indicate loose components or debris caught in the system, while grinding noises can point to issues with the compressor or worn-out bearings. A squealing sound, particularly when the AC is first turned on, might be a sign of a slipping or worn-out belt. These noises are typically due to wear and tear or lack of maintenance, which can cause parts to break down over time.

Unpleasant Odors

A musty or moldy smell from the air conditioning vents is a clear sign of trouble. This odor often indicates mold or mildew growth within the AC system, usually caused by moisture accumulation. When moisture collects in the evaporator or ducts and isn’t properly drained, it creates an ideal environment for mold to grow. This affects the air quality inside the car, potentially leading to respiratory issues and inefficiency within the system.

Benefits Of Regular Air Conditioning Checks

Have you noticed a sign that something is wrong with your car’s air conditioner? Have you paid attention? Part of ensuring your air conditioning system is well cared for is performing regular checks. They help you in more ways than one.

Enhanced Comfort

Regular maintenance ensures your car’s air conditioning system functions efficiently, providing a comfortable and pleasant driving environment. With optimal cooling performance, you’ll enjoy a consistent and refreshing flow of cool air, even during hot weather conditions. This enhances your comfort, making long drives and daily commutes more enjoyable for you and your passengers.

Improved Air Quality

Routine checks and servicing help maintain clean air filters and vents, preventing the buildup of dust, pollen, and other pollutants. This leads to improved air quality inside the car, reducing the risk of respiratory issues and allergies. Clean air filters also prevent unpleasant odors and the growth of mold or bacteria in the system, contributing to a healthier cabin environment.

Increased Fuel Efficiency

A well-maintained air conditioning system operates more efficiently, placing less strain on the engine and improving fuel economy. When the AC system is functioning optimally, it requires less energy to cool the air, resulting in lower fuel consumption. This can lead to cost savings on fuel over time and a reduced environmental impact.

Prevention of Major Repairs

Regular inspections can identify minor issues before they develop into major problems, helping to prevent costly repairs. By addressing issues such as refrigerant leaks, worn-out components, or electrical malfunctions early on, you can avoid more extensive damage that might require expensive repairs or replacements.

Extended System Lifespan

Regular maintenance helps extend the lifespan of your car’s air conditioning system by keeping all components in good working condition. By ensuring that parts like the compressor, condenser, and evaporator are functioning properly, you can prolong the overall durability and reliability of the system, saving money on premature replacements.

Better System Performance

Routine checks and servicing ensure that all components of the AC system are operating at their best, leading to improved overall performance. This means faster cooling, consistent temperature regulation, and better dehumidification, all of which contribute to a more effective air conditioning system.

Safety and Reliability

A properly functioning air conditioning system enhances safety by preventing foggy windows and ensuring clear visibility. Regular checks can also prevent unexpected breakdowns and failures, ensuring that your AC system remains reliable when you need it most, especially during extreme weather conditions.

Preservation of Vehicle Value

Keeping your car’s air conditioning system in top condition helps preserve the overall value of your vehicle. A well-maintained AC system is an attractive feature for potential buyers and can contribute to a higher resale value when it comes time to sell or trade in your car.

Is It Time For An Air Conditioning Check?

When it comes to your car’s air conditioning system, relying on a trusted mechanic is crucial to the overall performance of your vehicle. True professionals have the knowledge and expertise to get the job done right the first time. Bring your car in for a check, and we’ll ensure the air conditioner is properly maintained, preventing hazards and optimizing performance.

Need an air conditioner check? We can help. Give us a call today.

Refrigerant – It’s What Keeps Your Car’s AC Running Efficiently

June 18, 2024 by Denver Express Car Care

On a 90-degree day, nothing feels better when you get into your car than a cool breeze flowing through the vents. It can help a little of your stress disappear as you feel the temperature fall.

Yet sometimes it might feel as if it takes longer for that to occur. You keep it on full blast, wondering where the cool air is.

Then there are efficiency issues – does AC operation mean less fuel efficiency? What if you want both?

No matter what you’ve heard about keeping your car’s AC running efficiently, we bet there are a few myths you may still believe. Let’s get to the nitty-gritty of a car’s AC system and find out how to stay cool all season long.

How a Car’s AC System Works

It’s actually a fairly simple process.

A car’s air conditioning system works by removing heat from inside the car and expelling it outside, making the air inside cooler. It uses a special substance called refrigerant that circulates through the system. The process starts with the compressor, which is powered by the car’s engine. The compressor squeezes the refrigerant gas, increasing its pressure and temperature.

Next, the hot, high-pressure refrigerant gas moves to the condenser, which is located at the front of the car near the radiator. As air flows over the condenser, the refrigerant releases its heat and changes into a high-pressure liquid. This cooled liquid then travels to an expansion valve, where it quickly expands. This expansion lowers its pressure and temperature, turning it into a cold, low-pressure liquid.

Refrigerant - It’s What Keeps Your Car's AC Running Efficiently

The cold liquid refrigerant then goes to the evaporator, which is inside the car’s dashboard. The car’s blower fan pushes warm air from the interior over the evaporator coils. The refrigerant absorbs the heat from the air, causing it to evaporate into a gas. This process cools the air, which is then blown through the car’s vents, making the interior cool and comfortable.

The refrigerant, now warm and low-pressure again, goes back to the compressor, and the cycle starts over. This continuous loop removes heat from the car’s interior and expels it outside, keeping the car cool. Additionally, as the evaporator cools the air, it also removes moisture, dehumidifying the car’s interior. The condensed water from this process drains outside the vehicle.

Let’s Talk Refrigerant – An Essential Part of an AC System

As you’re reading above, you’ll notice refrigerant stands out as an essential part of the cooling process. That makes it one of the important fluids you should inspect regularly throughout the cooling system, as it’s crucial for your car’s AC system, helping cool and dehumidify the air inside your vehicle. Here’s what you need to know about refrigerant:

How to Know if Your Car Has Proper Refrigerant

First, check if your car’s AC system is blowing cold air when set to maximum cooling. If it is, you likely have enough refrigerant. Pay attention to how quickly your car cools down; if it takes longer or the air isn’t as cold as it used to be, the refrigerant level might be low. Some cars have a sight glass on the refrigerant lines where you can see the refrigerant flow; bubbles in the sight glass can indicate low levels. During routine maintenance, a mechanic can use gauges to check the refrigerant pressure. Proper pressure readings indicate the right amount of refrigerant.

How Often Should Refrigerant Be Checked?

It’s a good practice to have your car’s AC system checked at least once a year, ideally before the hot summer months. This ensures the system is in good working order and can help detect any issues early. If you notice any decline in AC performance, unusual noises, or if the air isn’t as cold as it should be, have the refrigerant levels checked immediately.

What Happens if Refrigerant is Low?

Low refrigerant levels mean the AC system cannot cool the air effectively. You’ll notice that the air from the vents is not as cold as it should be. The AC compressor relies on refrigerant for lubrication and cooling. Running the system with low refrigerant can cause the compressor to overheat and fail, leading to expensive repairs. The evaporator removes moisture from the air, but low refrigerant levels reduce its efficiency, leading to higher humidity inside the car. Additionally, low refrigerant often indicates a leak in the system. Refrigerant leaks can be harmful to the environment and need to be addressed promptly by a professional.

Tips for Maintaining Proper Refrigerant Levels

Include AC system checks in your regular vehicle maintenance schedule. Have a certified technician inspect your AC system annually, especially before summer. If you suspect a refrigerant leak or experience reduced cooling, seek professional help immediately to prevent further damage and ensure optimal performance.

AC’s Effect On Fuel Efficiency

According to the US Department of Energy, running your car’s AC system is the main contributor to reduced fuel economy in hot weather. Of course, there are a number of factors that impact that reduction: outside temperature, humidity, intensity of the sun, to name a few. But in very hot conditions, AC use can reduce a conventional vehicle’s fuel economy by more than 25 percent. EVs and hybrids can be even more.

The refrigerant in your car’s AC system indirectly affects fuel efficiency through its role in the AC compressor’s operation. When you turn on the AC, the compressor pressurizes the refrigerant and circulates it to cool the air. This process requires additional engine power, increasing fuel consumption. The harder the compressor works, the more fuel the engine uses.

Having the right amount of refrigerant is crucial for efficient AC operation. When refrigerant levels are optimal, the AC system works efficiently, cooling the air with minimal strain on the compressor. This results in a moderate increase in fuel consumption when the AC is on.

If the refrigerant levels are low, the compressor has to work harder to cool the air, leading to higher fuel consumption. The engine must produce more power to drive the overworking compressor, using more fuel in the process. Too much refrigerant (an overcharged system) can also cause problems. Excess refrigerant increases pressure and strain on the compressor, making the system less efficient and consuming more fuel.

What’s the answer? How do you ensure efficiency throughout the season?

It starts with regular maintenance.

Regular maintenance of the AC system, including checking and refilling refrigerant levels, ensures it operates efficiently. An efficient AC system requires less power from the engine, helping maintain better fuel economy. A well-maintained compressor that runs smoothly and efficiently uses less energy, conserving fuel. Additionally, ensuring there are no leaks or blockages in the AC system helps maintain proper refrigerant levels and optimal compressor performance, both crucial for fuel efficiency.

We also suggest protecting your vehicle no matter where you are. Park in shaded areas or use sunshades to protect your interior.

Open the windows when you first get into your car on a hot day. Let the open windows air out some of the hot air while you start your vehicle, then allow the AC to gradually cool the interior down. This puts less demand on the AC and helps cool your car faster.

Staying Cool All Summer Long

Efficiency starts by understanding your vehicle a little better. Want a cooler, more comfortable drive? It starts with creating a well-maintained vehicle, one that drives well in any road condition.

How can we help you? Have an AC problem? Have questions about how air conditioning works? We’re here to help you with all of your needs.

When Things Heat Up, It Might Be Time For Car AC Repair

May 24, 2024 by Denver Express Car Care

What does summertime in Colorado mean to you?

As much time outside playing with your friends.
A drive into the mountains – it’s beautiful, with so much to do.
Taking the kids on small road trips to see more of this amazing state.

Whether you said yes to one of those, or you have a list all your own, chances are you’ll spend a lot of time behind the wheel. Have you seen the roads these days? It’s endless traffic. Will you spend the time with your windows rolled down because the AC doesn’t work?

Maybe it’s time for car AC repair.

Your Car AC System

Your car’s AC works similarly to your home’s AC. At the heart of the unit is refrigerant. It’s a special fluid with a low boiling point. It moves into a compressor, which increases its pressure and temperature, turning it into a gas instead of a liquid.

It then moves to a condenser that dissipates the heat from the refrigerant, causing it to condense into a high-pressure liquid. It flows through an expansion valve where it regulates the flow of the refrigerant, reducing the pressure, causing it to expand rapidly. This leads to a drop in temperature.

The now-cool refrigerant flows into the evaporator, located in the car’s dashboard. Air from outside the car is drawn in and blown over the evaporator coils, cooling the air. As it moves over the cold coils, moisture condenses, dehumidifying the air.

When Things Heat Up, It Might Be Time For Car AC Repair

The blower fan then pushes the cooled and dehumidified air into the passenger cabin, lowering the temperature to your desired level. Using the thermostat and controls gives you a chance to adjust the desired temperature and fan speed, regulating the overall operation.

It may seem like a fairly simple operation, but a number of things can go wrong.

What’s Wrong if Your Car AC is Blowing Hot Air?

Now that you know how a car AC works, it’s easier to understand what can go wrong.

It Might Be a Refrigerant Leak

One of the most common reasons for blowing hot air comes from a refrigerant leak. If there isn’t enough refrigerant inside the system to circulate properly, it won’t be able to cool your passenger compartment. Refrigerant isn’t colored like other fluids inside your car. It typically appears as a clear, oily liquid, though it can pick up dirt and debris, darkening the appearance. It often appears as a faint rainbow sheen if it hits the pavement.

It Might Be Compressor Issues

The compressor is responsible for pressurizing the refrigerant. If it isn’t working correctly or engaging, the AC won’t cool the air. This could be from a variety of issues, including electrical issues, a faulty clutch, or other compressor-related problems.

It Might Be a Condenser or Evaporator Problem

The condenser or evaporator can leak or clog over time, which will also lead to warm air blowing through the AC vents. This can be from age or wear and tear over time.

It Might Be Clogged or Blocked Air Filters

Air from outside moves into the system before it’s cooled and blown into the passenger compartment. It moves through a filter, which can clog over time. In some cases, fixing your AC system could be as simple as cleaning or replacing an air filter. On many vehicles, this filter can be found at the base of the windshield, making it easy to find. You can use a vacuum to suck out dirt and debris. If that doesn’t fix the problem, it could be a deeper problem.

It Might Be Electrical or Sensor Issues

Today’s modern cars are heavily controlled by electrical components and sensors. If a problem starts in any one of these areas, it can also cause the AC system to malfunction. Issues with temperature sensors or the control panel may prevent the system from regulating the temperature.

It Might Be The Cooling Fans

The cooling fans in front of the condenser help dissipate heat from the refrigerant. If these fans aren’t working correctly, the AC may struggle to produce cool air. You’ll often notice this more when your car is idling, or you’re driving around the neighborhood at low speeds.

How To Properly Maintain Your Car’s AC

The good news is a car’s AC system is easy to maintain.

Every year, you schedule a checkup with your doctor just to check in. They might request bloodwork, take a few measurements, or schedule a few tests to ensure you’re in good health.

Taking the same approach with your vehicle can ensure it stays operational all year, no matter where the drive takes you. Schedule a maintenance visit before summer heat kicks in, and a mechanic will inspect your AC systems for signs of leaks, wear and tear, or any damage that may have occurred. If you notice unusual noises or strange odors, have them addressed promptly by a technician.

We’ve mentioned it before, but it’s worth mentioning again. Replacing the cabin air filter ensures proper airflow and helps maintain air quality inside the car. Check your owner’s manual for manufacturer recommendations, or replace it more frequently if you drive in dusty environments.

You should also check refrigerant levels from time to time. If you notice a decrease in cooling performance, have the refrigerant levels checked by a professional. Low refrigerant levels can indicate a leak or other issues within the system.

It’s also important for a technician to occasionally inspect the belts and hoses connected to the AC compressor for signs of cracks, wear, or leaks. Age impacts a lot of things under the hood – don’t wait until they’re damaged. It’s easier on the pocketbook and your peace of mind if you replace it before it gives you trouble.

Schedule Car AC Repair Before the Heat of the Summer

As the temperatures rise during the summer months, your car’s air conditioning becomes an essential component for comfort and safety. To ensure your AC system is ready to tackle the heat, schedule any necessary repairs or maintenance before the peak of summer arrives.

By proactively addressing any issues with your car’s AC system, you can avoid the inconvenience of being without cool air when you need it most. Whether it’s addressing refrigerant leaks or simply performing routine maintenance, taking care of your AC system before the summer heat sets in can help prevent breakdowns and ensure optimal performance.

Don’t wait until the sweltering heat of summer is upon you. Take proactive steps to schedule any necessary repairs or maintenance for your car’s AC system now, so you can stay cool and comfortable on the road when the temperatures soar.

How can we help you?

Troubleshooting Car AC Problems to Stay Cool This Summer

August 21, 2023 by Denver Express Car Care

Summertime is fun time. Check out a baseball game. Hang out with friends by the pool. Head to the mountains and take in the sights.

No matter what you choose to do after work, there’s one thing you should avoid … car problems. And in the summertime, that often comes in the form of AC problems.

No worries; we have some troubleshooting advice for you.

With summer in full swing, there’s nothing more important than a properly functioning air conditioning system in your car. We all know how uncomfortable it can get when that cool breeze suddenly turns into warm, stale air. But fear not, because I’ve got advice for you. Pay attention to some common car AC problems and their solutions, and it’ll be like having an experienced auto mechanic tucked in right there beside you.

Weak or Warm Airflow

You’re cruising down the road, expecting that refreshing chill from your AC, but all you’re getting is a weak puff of lukewarm air. What’s going on?

Troubleshooting Car AC Problems to Stay Cool This Summer

Warm air could be due to several reasons.

One common culprit is a refrigerant leak. Your AC system relies on refrigerant to cool the air; if it leaks, you won’t get that icy blast you’re hoping for.

Another possibility is a clogged cabin air filter. Imagine this filter as the lungs of your AC system – if it’s clogged with dirt and debris, the airflow will be restricted.

Solution: If you suspect a refrigerant leak, it’s time to visit a professional mechanic. They’ll diagnose the issue, fix the leak, and recharge the system. For a clogged cabin air filter, you might even be able to tackle this one yourself! Check your car’s manual for the location of the filter and either clean or replace it as needed.

AC Blowing Cold on One Side, Warm on the Other

Ever been in a car where one side feels like the Arctic while the other is basking in the Sahara? This could be a case of temperature imbalance. It’s likely that your car has a dual-zone climate control system, and if the blend door actuator (the device that controls the temperature) malfunctions, it could lead to uneven cooling.

Solution: A visit to the mechanic is in order. They’ll diagnose which blend door actuator is misbehaving and replace it if necessary. This will ensure that everyone inside the car can enjoy the same comfortable temperature.

Unpleasant Odors

Nothing ruins a pleasant drive like a foul smell wafting from your vents. This could be a sign of mold or bacteria growth in your AC system. Moisture can accumulate in the system, creating a breeding ground for these unwelcome guests.

Solution: Start by running your AC on high for a few minutes to dry out the system. If the smell persists, consider using an AC cleaner to eliminate the odor. In severe cases, a professional cleaning might be necessary to remove mold and bacteria from the system.

Strange Noises

Your car’s AC should be humming along quietly, but if you hear rattling, hissing, or other strange noises, it’s time to investigate. These noises could indicate anything from a worn-out compressor to a loose belt.

Solution: Again, a trip to the mechanic is in order. They’ll diagnose the source of the noise and make the necessary repairs. Ignoring unusual noises could lead to more significant problems down the road.

AC Not Blowing Cold Air

So, you turn on your AC, adjust the temperature dial, and wait for the frigid air to rush in. Except, it doesn’t. Your AC is blowing, but it’s just not cool. What’s the deal?

The first thing to check is your compressor – it’s the heart of your AC system. If it’s malfunctioning, your AC won’t be able to produce cold air.

Another possibility is a faulty condenser or evaporator, which are responsible for removing heat and moisture from the air.

Solution: Time to call your trusty mechanic! They’ll perform a series of tests to determine the exact cause. If it’s a compressor issue, they might need to replace it. For problems with the condenser or evaporator, repairs might involve fixing leaks or replacing components.

AC Cycling On and Off

You’re driving along and notice your AC cycling on and off more frequently than usual. Sometimes it’s hot. Sometimes it’s cold. What’s the deal?

This can be frustrating, and it might even indicate an underlying issue. One common culprit is a refrigerant leak, which can lead to improper pressure levels in the system, causing the AC to cycle on and off.

Solution: Yep, you guessed it – a visit to the mechanic is necessary. They’ll inspect the AC system, identify any leaks, and address the problem. Don’t delay this repair, as refrigerant leaks can also harm the environment.

Electrical Issues

Sometimes, your car’s AC might not be working due to electrical gremlins. Fuses, relays, and wiring can all play a role in the proper functioning of your AC system. If any of these components fail, it can lead to a complete AC shutdown.

Solution: While some basic electrical troubleshooting can be done at home, like checking fuses, it’s best to consult a mechanic for more complex issues. They have the tools and expertise to diagnose and repair electrical problems effectively.

The secret to troubleshooting your car’s AC problems

Notice anything similar about each of these troubleshooting methods? They all involve paying attention to how your car is behaving.

And that’s really the key to keeping your car well-maintained. Troubleshooting car AC problems doesn’t have to be a daunting task. Pay attention to how your car behaves each day, and take action when something goes astray. It’s the best way to ensure a comfortable and cool ride all summer long.

Remember, while some minor issues can be tackled on your own, it’s always a good idea to consult a professional mechanic for more complex problems. Regular maintenance and prompt repairs are key to keeping your car’s AC running smoothly and efficiently.

Stay cool out there!

Leaking Refrigerant from your Car’s Air Conditioner is Bad for the Environment

July 18, 2023 by Denver Express Car Care

We all love staying cool on the hottest days of the year. But what you don’t know about your car’s air conditioner might be hurting the environment.

In order to produce cooled air, your car requires refrigerant in the system. If it’s working well, your car will be fully operational, delivering cool air. As a car ages, that can change. Suddenly, a 90-degree day occurs, and you notice your air conditioner isn’t working as it should. It might be the refrigerant, which impacts more than the cold air inside your car.

Your car’s air conditioner relies heavily on refrigerant to keep you cool on hot summer days. However, there are times when your air conditioner may not be cooling your car as it should, or you may notice weird smells or noises. At times like these, it’s essential to find and fix the issue quickly because leaking refrigerant can cause lasting harm to the environment.

How Your Car’s Air Conditioner Works

Before diving into refrigerant’s impact, it’s important to understand how a car’s air conditioner works.

A car’s air conditioning system removes heat and moisture from the air inside the vehicle, resulting in cooler and drier air.

It starts with the compressor. The air conditioning system is powered by a belt-driven compressor, typically located on the engine. The compressor circulates refrigerant throughout the system.

The refrigerant plays a crucial role in the air conditioning process. It’s a chemical compound with properties that allow it to change from a gas to a liquid and vice versa at relatively low temperatures. The most common refrigerant used in cars is currently R134a, though newer vehicles may use a more environmentally friendly alternative, such as R1234yf.

The refrigerant starts in a gaseous state and enters the condenser, usually located at the front of the car. The condenser cools the refrigerant by transferring heat to the outside air. As a result, the refrigerant condenses into a high-pressure liquid.

Leaking Refrigerant from your Car’s Air Conditioner is Bad for the Environment

The high-pressure liquid refrigerant passes through an expansion valve, which reduces its pressure and converts it into a low-pressure mixture of liquid and vapor. This expansion causes a significant drop in temperature.

The cool, low-pressure refrigerant enters the evaporator, typically inside the dashboard. The warm air from the car’s interior is blown over the evaporator’s fins. The refrigerant absorbs heat from the air, causing the refrigerant to evaporate and turn back into a gas.

The cool air is blown by a blower fan, powered by the car’s electrical system, and directed through the vents into the car’s cabin. This provides the desired cooling effect.

The gaseous refrigerant returns to the compressor, and the cycle starts again. The compressor pressurizes the gas, and the process repeats, continually cooling the air inside the car until the desired temperature is reached.

It’s important to note that the air conditioning system also dehumidifies the car’s air. When warm air passes over the cold evaporator, moisture condenses on the evaporator’s surface, reducing the humidity inside the vehicle.

4 Signs the Air Conditioner Needs Help

It’s easy to notice an air conditioning system that isn’t at peak performance.

Blowing Warm Air – If your air conditioner is blowing warm air, this could indicate a refrigerant leak. When there’s a leak, there is insufficient refrigerant to cool the air, causing it to blow warm.
Weird Noises – Strange noises usually indicate a problem with the compressor. The refrigerant could be too low or pooling in specific areas, causing damage to the system.
Nasty Smells – When mold or bacteria grow in the evaporator, they release an unpleasant odor into the car’s air. Removing these smells can be challenging and sometimes require a complete system overhaul.
Visible Refrigerant Leaks – If you notice oily or greasy spots on your driveway or around certain parts of your car, your air conditioner may have a refrigerant leak. It’s best to get this checked by a professional because refrigerant harms the environment.

The Difference Between R134a and R1234yf Refrigerant

In the past, R134a refrigerant was the standard refrigerant used in cars. However, modern cars now use R1234yf refrigerant, which is more eco-friendly and less environmentally harmful.

Pay particular attention to what your car currently uses. R134a and R1234yf refrigerants should not be mixed because they have different properties. Doing so could cause serious system damage.

What a Refrigerant Leak Can Do to the Environment

A refrigerant leak can have several negative impacts on the environment.

Ozone Depletion – Many refrigerants used in older car air conditioning systems, such as R12 (Freon), contain chlorofluorocarbons (CFCs) or hydrochlorofluorocarbons (HCFCs). These chemicals are known to be ozone-depleting substances. When released, these substances can reach the upper layers of the atmosphere and contribute to the depletion of the ozone layer. The ozone layer helps protect the Earth from harmful ultraviolet (UV) radiation. Its depletion can lead to increased UV exposure, which has various detrimental effects on human health and the environment.

Global Warming Potential – Many refrigerants, including the commonly used R134a, belong to a class of chemicals known as hydrofluorocarbons (HFCs). HFCs have a high global warming potential (GWP), meaning they significantly impact climate change when released into the atmosphere. HFCs trap heat in the atmosphere, contributing to the greenhouse effect and global warming. In recent years, efforts have been made to transition to more environmentally friendly refrigerants with lower GWPs, such as R1234yf, which has a much lower impact on climate change.

Air Quality – Refrigerant leaks can also impact local air quality. When refrigerants escape into the air, they can contribute to the formation of ground-level ozone, a harmful air pollutant. Ground-level ozone can cause respiratory problems, especially for people with asthma or other respiratory conditions. Additionally, refrigerants may react with other contaminants in the atmosphere, leading to the formation of secondary pollutants that can be harmful to human health and ecosystems.

To mitigate these environmental impacts, it is essential to address refrigerant leaks promptly. Regular maintenance and inspection of car air conditioning systems can help detect and fix leaks. It is also important to ensure proper disposal and recycling of old refrigerants to prevent their release into the environment.

It’s Time to Get Your Car’s Air Conditioner Ready for Summer Heat

Your car air conditioner is a lifesaver, but it can also cause severe environmental damage if not cared for properly. Regular checks, maintenance, and prompt action can help keep your air conditioner running smoothly and reduce your ecological footprint.

If you notice any of the above signs or suspect a refrigerant leak, please take precautions and contact a professional. Working together can help reduce environmental damage and keep the air we breathe safe and clean.

What To Know About Refrigerant and Your Vehicle in 2023

May 7, 2023 by Denver Express Car Care

The temperatures are climbing up, up, up! It’s not yet summer, and you’re already cranking up your car’s air conditioner. Is the air conditioner working? Is refrigerant low? What should you know?

Refrigerant, also known as freon, is an important part of your air conditioning system. If it’s low, your A/C won’t operate.

What is refrigerant?

Refrigerant is a substance used in refrigeration systems to transfer heat and provide cooling. In a vehicle, refrigerant is used in the air conditioning system to remove heat from the interior of the car and expel it outside, making the inside of the vehicle cooler and more comfortable for passengers.

You might have heard refrigerant referred to as Freon. Freon is a brand name for a type of refrigerant commonly used in older air conditioning systems. Specifically, it refers to a kind of chlorofluorocarbon (CFC) refrigerant used in the past but has since been phased out due to its harmful environmental impact. CFCs have been found to deplete the ozone layer, which protects the Earth from harmful UV rays.

Nowadays, most vehicles use refrigerants that are much less harmful to the environment, such as hydrofluorocarbons (HFCs) or hydrochlorofluorocarbons (HCFCs). These refrigerants are designed to provide similar cooling performance as Freon, but with much less environmental impact.

What refrigerants are used in today’s cars?

Car manufacturers constantly look for ways to improve their vehicles. When Freon was phased out, designers looked for new ways to do the job more effectively. That’s when different types of automotive refrigerants were developed.

What To Know About Refrigerant and Your Vehicle in 2023

Today’s vehicles typically use one of two refrigerants: R134a and R1234yf. Check your owner’s manual to determine what your car uses – they should never be mixed.

The main difference between the two is their impact on the environment.

R134a has been used in automotive air conditioning systems for many years and is known to have a relatively low impact on the environment. However, it is still a greenhouse gas and can contribute to global warming.

R1234yf is a newer refrigerant developed as a more environmentally friendly alternative to R134a. It has a much lower global warming potential than R134a, meaning it has a much smaller impact on the environment. R1234yf also has a shorter atmospheric lifetime than R134a, which means it breaks down more quickly and has less of a long-term effect on the environment.

However, one potential drawback of R1234yf is that it is a mildly flammable refrigerant, which has raised some safety concerns. To address these concerns, automotive manufacturers have designed new air conditioning systems specifically designed to use R1234yf and minimize potential safety risks.

Overall, both R134a and R1234yf are effective refrigerants for automotive air conditioning systems, but R1234yf is considered more environmentally friendly.

How refrigerant works inside a vehicle

Refrigerant works by absorbing heat from the car’s interior and then releasing that heat to the outside environment.

The refrigerant circulates through the air conditioning system in a closed loop, starting in the compressor. The compressor pressurizes the refrigerant and pumps it through the system, where it passes through the condenser. The condenser is located at the front of the vehicle. It’s designed to dissipate heat, allowing the refrigerant to release the heat it has absorbed from the interior of the car.

After passing through the condenser, the refrigerant enters the expansion valve or orifice tube. This component is designed to regulate the flow of refrigerant into the evaporator, which is located inside the vehicle’s cabin. As the refrigerant flows through the evaporator, it absorbs heat from the air inside the car and cools it down.

The cooled air is then blown into the interior of the vehicle by the air conditioning system’s blower fan, providing cool and comfortable air for the passengers.

Once the refrigerant has absorbed heat from the interior of the car, it circulates back to the compressor to repeat the process. The cycle continues as long as the air conditioning system is turned on.

How do you know if the refrigerant is low?

Several signs can indicate that the refrigerant level in your vehicle’s air conditioning system is low. These include:

Blowing warm air from the vents

If your air conditioning system is blowing warm air instead of cold, this can be a sign that the refrigerant level is low. Refrigerant is responsible for absorbing heat from the car’s interior and releasing it outside, so if there isn’t enough refrigerant in the system, it won’t be able to cool the air effectively.

Rapid cycling of compressor clutch

The compressor clutch is the component that engages and disengages the compressor in the air conditioning system. If the refrigerant level is low, the compressor may start to cycle rapidly on and off as it struggles to maintain the correct pressure in the system.

A/C warning light

Many modern vehicles are equipped with an A/C warning light on the dashboard that will illuminate if there is a problem with the air conditioning system. If the refrigerant level is low, this can trigger the warning light to come on.

Refrigerant leaks

If there is a leak in the air conditioning system, this can cause the refrigerant level to drop over time. Signs of a refrigerant leak can include hissing or bubbling noises coming from the system, oily residue around the A/C components, or a noticeable decrease in cooling performance over time.

If you suspect that the refrigerant level in your vehicle’s air conditioning system is low, it’s crucial to have the system inspected by a qualified mechanic. Low refrigerant levels can cause damage to the compressor and other components in the system, so it’s essential to address the issue as soon as possible.

Air conditioning care

Notice a change in the air conditioning performance inside your vehicle? It may be the refrigerant.

We can help with that. Whether you notice a light on your dashboard, or are curious about an odd smell when you turn the air conditioner on, bring it in for an inspection today. We’ll ensure it’s working correctly and keep you cool all summer.

When Your Car’s Heater Isn’t Working Right

September 28, 2022 by Denver Express Car Care

Cold, winter mornings have a way of creeping up on you each year. The days grow shorter. You wake up and start your day before the sun rises. As you rush to your car, your thoughts drift over your day ahead: meetings, a deadline for a project, a few phone calls you need to make. You don’t think much about how cold your car is; it’ll warm up quickly.

But it doesn’t. A few miles down the road, you start noticing how cold it is. Your car’s heater isn’t working right, and it’s blowing cold air all around you. You notice a few snowflakes starting to fall, and you shiver in response.

Now what?

How a car’s heating system works

Your car’s heating system includes a few basic components: heater core, blower fan, heater control valve, heater hoses, the ventilation system, and control panel located inside the car.

Heat is created by the engine, and needs someplace to go. Most of that is filtered out through the exhaust system, with the rest remaining in the engine, transferred to the coolant.

When your vehicle reaches operating temperature, the thermostat opens up and allows coolant to circulate throughout the system. It removes any heat from the engine, sending it into the radiator and the heater core. From there, it distributes the heat into your cabin. You control the temperature, ensuring the passenger section is as warm or cool as you desire.

When Your Car’s Heater Isn’t Working Right

For the heater to work properly, the cooling system needs to be in good working condition. That means the correct mix of coolant and water, with proper coolant levels and no leaks in the system. The thermostat should open and close at the proper temperature levels, with the water pump circulating coolant through the engine, radiator, and heating core as needed. If this system works well, your heater will be there to provide conditioned air at the levels you desire.

When your car heater isn’t working, there’s something wrong in the system.

Low coolant levels

One of the first things to check is also one of the most common reasons for a heater to stop working. If the coolant levels are low within the system, it can’t circulate properly through the system. In optimal working conditions, coolant levels won’t change. If there is a leak, it can occur anywhere within the system: cracked coolant tank, broken gasket, faulty hose, etc.

If the heater doesn’t warm up and start blowing heated air within ten minutes, the coolant might be too low to circulate through the heater core. While you may feel it inside the cabin with little to no heat, your car’s engine feels it in different ways. Without proper coolant levels, the engine might overheat, which is an expensive repair to fix.

Coolant isn’t like other fluids. It won’t evaporate, and adding more into the system won’t fix the problem. You’ll have to find the root cause and fix the problem at the source.

Malfunctioning thermostat

Your car’s thermostat is a valve that opens and closes to regulate coolant flow into the engine and radiator. While it’s a simplistic device, it’s vital to keeping your engine running at the proper temperature.

A malfunctioning thermostat is often stuck in the open or closed position. If it’s stuck in the open position, it allows too much coolant to flow, preventing the car from reaching optimal operating temperature. A thermostat stuck in the closed position won’t allow coolant to circulate, which stops the heat from flowing properly throughout the system. Both will be noticeable by decreased performance.

Faulty heater core

The heater core works similarly to the radiator. While the radiator dissipates heat to the surrounding air, the heater core sends heat into the passenger cabin by a blower fan.

The heater core uses a maze of narrow tubes and fins for proper circulation. If any one of these is blocked or damaged, it reduces the coolant level or flow through the engine’s cooling system. A faulty heater core and low coolant levels often are interchangeable, with one impacting the other. Two easy ways to tell if your heater core has been compromised include windows that easily fog up, or a sweet-smelling scent lingering inside your car. Both are signs you should schedule a maintenance visit soon.

Faulty blower fan

When you turn up the heat on the dashboard panel inside your car, the heater core captures warm air from the coolant and transfers it into the cabin as a warm air supply. The blower fan makes it possible for ventilation of the warm air from the heater core, pushing it out through the vents. If the blower fan isn’t working, there will be no way to transfer the warmed air supply out through the vents.

The blower fan can malfunction for a variety of reasons. It could be a blown fuse, or damage to the internal components of the blower fan. If you barely feel a breeze no matter how high you turn up the heat, chances are it’s a problem with the blower fan.

Other problems

Of course, the above are some of the most popular reasons why your car’s heating system might not be working. But cars today are built with more than 10,000 parts. If a wire frays, a hose cracks, a part breaks, or fluid stops flowing, it will cause problems throughout the system.

The only way to get to the root of the problem is with a thorough diagnostics test.

Get cozy once again – schedule a maintenance visit today

Colorado weather is unpredictable at best. While it might be sunny and warm enough for the windows to be rolled down today, the snow could be flying by the time you rise for work tomorrow.

It’s hard to enjoy the ride in, or be stuck in traffic if you’re shivering inside a cold car. A heating system not operating correctly is a sign of a bigger problem.

An inspection will help locate the problem, allowing mechanics to get to the broken or faulty piece quickly, and have you back on the road in no time.

Have you ever experienced a car heater not operating correctly?

Why a Car Overheats When The AC Is On

September 21, 2022 by Denver Express Car Care

If you had to choose one accessory on your vehicle that you simply couldn’t live without, what would it be? The radio? Heated seats? Air conditioning?

On a 95-degree day, no matter where it fell on your list before, chances are the AC moved quickly to the top.

You’re stuck in traffic. You have a meeting to get to. The temperature keeps climbing up, up, up!

You turn up the AC unit one more notch. The cool air feels great.

And then suddenly, everything changes. You feel it in your car’s behavior. The cool air isn’t so cool. The temperature gauge starts to climb. You hear noises that weren’t there before. You play around with buttons and dials, trying to find the cause.

You’ve determined the car overheats when the AC is on.

Why is your car overheating when the AC is on?

There are several reasons why a car might overheat when the AC is on and running full blast trying to keep you cool. The likely causes include:

It could be an AC compressor overload. When you turn the AC on, the compressor starts to work with the engine to move and compress the refrigerant cylinders, which builds pressure inside the engine. A car’s air conditioner draws significant power from the engine. If you’re putting a high load on the compressor and it isn’t in top shape to perform the task, eventually, it will make the car overheat. A high load will damage the AC compressor over time, preventing it from blowing cold air out into the passenger compartment. If this continues to fester, the car engine can overheat, causing more problems within the engine compartment over time.

It could be a malfunctioning cooling system. It’s one of the most common reasons for an overheating car. Problems often start small, such as a leak in the radiator. It’s running out of water and needs refilling to keep it operational. It might be a buildup of dirt or debris in the radiator, preventing fluids from moving smoothly throughout the system. Take a look at the radiator; do you notice corrosion or other buildup on the surface? While the radiator can be washed off with a low stream of water, it might also be a sign of a bigger problem. Bringing it in for a full inspection will help pinpoint the situation to determine what repairs will get it back to working condition.

It could be a problem with the fan. A lot of city driving is based on sitting in traffic, waiting at stop lights, and idling. If the air isn’t flowing correctly into the radiator, it can overheat. It can be caused by several things, including a blockage in the fins, a faulty electric fan, fan clutch, or fan switch. If you notice the car overheating more during idle situations, the engine fan probably is clogged or dirty, with lowered levels of airflow throughout the system.

It could be the radiator. The radiator is designed to pass coolant into the engine. That’s why the radiator plays an important role in your car’s overall functionality. If the radiator works correctly, it passes coolant over metallic fins into the engine, which helps the vehicle operate properly. If this process has any faults in the system, the coolant is disrupted, which leads to problems within the cooling system. Suppose you start to see the engine temperature climbing after you turn on the AC. In that case, it’s a good idea to check the radiator and ensure the various components operate as designed.

It could be a problem with the coolant temperature sensor. Today’s modern cars are built with multiple sensors to help alert you to potential problems before they impact the functionality of the vehicle. While it’s rare that a coolant temperature sensor would go out and allow the car to overheat, if you’ve considered other possibilities and still can’t find the problem, this is worth checking out. The coolant temperature is measured by the sensor and compared to the temperature within the dashboard system. If there is a discrepancy in the readings, it could cause the dashboard light to illuminate, signaling a problem. If it reads normal, but the temperature still continues to climb, it could also be a malfunction in the thermostat. To fix the thermostat or the coolant temperature sensor, bring your vehicle to a professional mechanic for replacement.

It could be a fault in other components. Every time you drive your vehicle, it can be impacted by many different things:

The environment
The weather
Potholes
Bumps
Extreme heat
Extreme cold
Sudden stops
Urban driving conditions

The list is never-ending. Parts wear out, sometimes in a manner you might not expect. You can be diligent with your routine maintenance, carefully watch manufacturer’s suggestions to replace parts at peak times, and still experience sudden problems with different components in your car.

If the compressor, condenser, evaporator, or refrigerant aren’t in proper working condition, they will impact the way your AC unit functions. And when the temperatures start to climb, it leads to the engine overheating.

What to do if the car overheats

Sometimes you can do everything right and the engine still overheats. The first thing you should do is turn the AC system off, and pull over to a safe spot off of the road.

Do not try to open the hood of the car, especially if you see smoke coming from around. Steam is scorching, and can severely damage your hands, eyes, and face.

If it’s a one-time problem, solutions can include:

Cleaning the radiator – it’s one of the most common reasons for overheating, especially if it’s clogged and antifreeze and water can’t pass through to the engine.
Checking the compressor – if you hear any noise coming from the compressor, bringing it in for inspection will ensure it’s operating properly.
Flushing the cooling system – if coolant is low or is compromised, it isn’t working as it should. A coolant flush will ensure proper antifreeze levels are topped off inside the system.
Check the refrigerant – this is an essential ingredient to help keep your AC unit functional. If refrigerant levels haven’t been checked in a while, a visit to a professional mechanic will ensure its functioning.

Final words

With over 10,000 parts, every component works together to perform well under all the driving conditions you incur each day. When you notice a change in the way your vehicle drives, it’s a sign it’s time for an inspection.

Finding the solution early can fix the problem before it escalates into something bigger and more expensive. If you notice an issue with your AC unit, bring it in today so we can check it out.

We’ll have you back on the road in no time.

How To Keep Your Car’s Air Conditioner In Top Shape As The Heat Climbs

July 24, 2022 by Denver Express Car Care

Summertime here in the Rockies has started to feel like endless days in the 90s and 100s, as heat settles across the land with little relief. You’re using your air conditioner like never before …

But what about inside your car? There are rumors out there that running the air conditioner makes your gas mileage fall. If you use your AC frequently, it will impact the overall health of your car.

Are those myths? How do you keep your car’s air conditioner in top shape even as the heat continues to climb?

Using your air conditioner when you first get in the car

Getting into a hot vehicle is never fun. It’s hot, stifling and can take a lot out of you. Yet pre-cooling your vehicle isn’t the answer. Instead of turning on the AC and letting it idle until cool, put the fan on high and open the back windows for 20 seconds allowing the hot air to flow out the back. The air conditioner is powered by an engine in operation. It puts added stress on the system when you idle, trying to get the car cooled before you move. Give your AC unit the support it needs and start driving before you turn it to full speed.

How To Keep Your Car’s Air Conditioner In Top Shape As The Heat Climbs

Schedule regular maintenance at the start of each season

When you establish a relationship with a reputable mechanic, you can feel comfortable bringing the car in for sound advice. We recommend scheduling seasonal visits twice a year to get your car ready for summer and winter driving. This will allow us to ensure every component and system is in optimal condition, ready to work hard for you as we have record-breaking events. For the air conditioner, it ensures your antifreeze is topped off, and that the appropriate coolant is being used within the system.

Change the AC filter as needed

Your owner’s manual is filled with important facts and information about how best to operate your vehicle. The more familiar you are with it, the more you can use it to schedule regular maintenance items and stay ahead of your car failing at inopportune times. Most AC filters last around 30,000 miles. The AC filter is typically located behind the glove box, and is something easy to change. If it’s been a while, changing it out will help increase airflow, reduce unpleasant odors, as well as reduce dust from settling into the interior of your car.

What to do when you notice odors

Any sign of odor or a strange smell is reason to be concerned. It can be annoying at best, dangerous at worst, and something you should act on immediately. There are a few odors that might suggest urgent issues:

A must smell could mean mold entering the cooling system’s evaporator. Try running the heater for a while to dry out the evaporator core and see if it disappears.
A sweet smell may signal an antifreeze leak. It’s time to bring it in for professional evaluation.
A gas smell coming from the AC unit could be an indicator of a gas leak. It could be something as simple as an unsecured gas cap, or a sign of a bigger hazard.

Keep inducts clean

There’s a reason it’s a good idea to keep your car clean during the summer and winter. If you allow buildup of water, snow, and dirt at the base of the windshield, it can impact the inducts. Moisture can sit there and build, blocking airflow and possibly causing mold or other pollutants to settle in. As these contaminants continue to grow, it enters through the air conditioner every time you use it. Keep this area clean by washing it regularly.

Run your AC periodically on defrost mode

When you turn the defrost mode on in the winter, have you noticed it kicks the air conditioner into gear? That’s because when the system is in defrost position, the AC compressor turns on. This draws outside air in and sends it through the AC evaporator to remove moisture from the air supply before sending it back to the heater core. By turning the defrost system on periodically throughout the summer, you’re allowing the system to run at maximum fan speed and coolness setting, helping clean out moisture and preventing mildew. What works to remove moisture from your windows during cold winter months also works well keeping your inside air supply cool, dry, and comfortable in the summer months.

Don’t leave the air conditioner on recirculation

While the most common AC buttons are to adjust temperature and fan speed, you’ll also see switches to move from fresh air to recirculation. Fresh air allows outside air to flow in. Recirculation continuously recirculates air throughout the inside cabin. While you may wish to recirculate when you’re behind a smelly diesel truck, move back to fresh air when you can as it provides more circulation throughout the inner cabin. Recirculation pulls air from the front and re-cools it. That makes the air flowing towards the back warmer as it’s recirculated back up front. With a full car and passengers in the back as well as the front, a constant input of fresh air will give you the best results.

What are the most common air conditioner issues?

Like many other systems in your car, the air conditioner components wear down over time. Common issues can be:

Refrigerant leaks
Cracked or broken cooling fans
Condenser and compressor malfunctions

A refrigerant leak is easy to spot. It’s a fluorescent yellow-green color that’s easy to detect as it leaves traces underneath your car.

Cooling fans can slow down or stop altogether for a variety of reasons. It can blow a fuse, have an electrical short, or be cracked by hitting debris on the road.

A broken condenser can be caused by a damaged part, component failure, or debris moving in through the grill and damaging the part.

In all cases, the faster you act, the less damage may occur.

Whether you’re performing preventative maintenance, ensuring your air conditioner is running well, or you have a problem with your system and it’s not keeping you cool, schedule an appointment today to get your AC system back in good working condition.

And stay cool no matter how long this current heat wave lasts this summer.

Get Your Car’s Air Conditioner Ready For Summer

May 10, 2021 by Denver Express Car Care

The temperatures are starting to climb. Fifties. Sixties. Seventies. Before we know it, we’ll be breaking records once again.

Here across the Front Range, those lazy summer afternoons are often a little difficult to enjoy outside. The intense sun beating down makes you hot just thinking about it.

Now think about your car. It’s there, sitting out in the blazing sun for hours at a time.

According to a San Jose University study, the temperature in the interior of your car can rapidly increase. On a one-hundred-degree day, the temperatures can climb to one-hundred-forty-five or more in just over an hour.

Cracking a window does little good. That same study shows it only allows a little air to circulate, but does almost nothing to bring down the temperatures on the inside.

Now imagine climbing in.

Hot!

As you turn on your engine, you want your air conditioner to work as quickly as possible. Will it? Or will it sputter and stop, barely providing you with any relief?

Before this scenario becomes a daily occurrence, take control now and get your car’s air conditioner ready for summer.

Get Your Car’s Air Conditioner Ready For Summer A car’s cooling system is an intricate part within your vehicle. Without it, your car wouldn’t operate as it should.

The cooling system includes many different parts, including the radiator, coolant, hoses, heater core, and water pump. With just a few simple steps now, you can ensure the entire system is working well, and will keep you cool all summer long.

Where do you start?

Listen

If you’re familiar with the way your car sounds, you’ll be more aware when a system starts acting up. Now, before the heat hits us with full force, turn your air conditioner on and listen. Does it make a sound as it turns on, or begins to operate? It should never be a loud process. It should be a hum in the background. If you hear banging, rattling, or anything else out of the ordinary, there may be something wrong somewhere in the air conditioning system.

Sniff

Air conditioned air always has a slightly different smell than the great outdoors. But it should never be overwhelming and distinctly noticeable. Turn the air conditioner on and sniff. Do you notice a strong, musty, or unpleasant smell? If dust, residue, or even mold or mildew built up inside the system, it can produce a scent reminiscent of a dusty attic. This not only is an indication of something wrong with your air conditioner, but it can also trigger allergies and asthma symptoms.

Look

When was the last time you popped the hood? Refrigerant sits in a container inside the engine compartment. A sight glass is fitted in the liquid line for quick reference. You can observe the refrigerant running through the system, which should look clear. If it’s milky or bubbly, it means water or air has penetrated the system and it’s time for a mechanic to replace it.

Feel

If an air conditioner is operating correctly, it should be able to bring the inside temperature down fifty degrees from the outside temperature. Of course, rarely will you have a desire for this extreme swing – moving from 100 to 50 isn’t what most of us consider comfortable. Still, your air conditioner should be powerful enough to handle the process. You can check it by turning your air conditioner on full blast, and leaving a thermometer inside the vehicle compartment. If there’s any problem with this test – especially if it’s not even close – it could be a sign something is wrong with the air conditioner.

What could be the problem?

If you’ve worked your way through the senses tests from above, and have a feeling something might be wrong with your vehicle’s air conditioner, it might be one of several things.

Radiator – when it comes to the health of your vehicle, the radiator plays an important part. The radiator’s job is to ensure car coolant (also known as antifreeze) passes through the engine to cool the system down. If it’s not working correctly, it can allow the engine to overheat, and the entire system to fail.

Water pump – it’s the water pump’s job to ensure coolant moves freely from the radiator to the engine. If the water pump slows or comes to a stop, this process will slow or cease, allowing the engine to overheat. When the water pump is working correctly, it’s designed to keep the cooling system at the proper temperature, no matter how much demand is placed on the system. If you notice coolant leads, or if rust starts forming around the engine compartment, it may be a sign of a faulty water pump.

Belts and hoses – while a lot of talk is about the main parts of the coolant system – radiator, water pump – there are a lot of pieces in the system to ensure it works properly. If one belt comes loose, if a hose cracks, the entire system starts to fail. The serpentine belt is the main belt that drives the cooling system. It circulates the water pump to keep your car cool and operating well. Even a tiny crack can throw this process off, and start degrading the system.

Heater core – the cooling system actually operates using the heater core within the vehicle. Signs your heater core may be the source of the problem include coolant leaks under the dashboard, an engine that runs hot, or you can smell coolant while sitting inside your car.

Coolant – while you don’t have to top off coolant in the same manner as motor oil or windshield washer fluid, it can decrease over time. You can check the antifreeze holding tank and ensure it’s filled to the full line. If not, it’s time to top it off. Be aware that coolant comes in different formulas, and some need to be mixed with water before adding to your vehicle. Get this wrong, and your problems will quickly escalate. That’s why it’s better to allow a mechanic to fully check your system, and repair only when problems are discovered.

Is your vehicle’s air conditioner ready for summer driving? Before the temperature climbs and stays high for the summer, bring your car in for a full maintenance visit today. We’ll ensure your cooling system is ready for no matter what the Colorado summer will dish out.