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Troubleshooting Car AC Problems to Stay Cool This Summer

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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

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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

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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

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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

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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.  

Why a Car Overheats When The AC Is On

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

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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

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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 SummerA 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.

Radiator Hoses

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Your radiator hoses carry coolant between your engine and radiator.  It’s an important job.  If a radiator hose fails, you could lose your engine coolant which might lead to overheating and very expensive engine damage, so you always want to make sure you have good hoses.

Radiator hoses are very resilient, but they are subjected to very harsh conditions.  Think about this,  the temperature might be below freezing when you start your engine and the coolant could be up over 100 degrees Fahrenheit within a mile.  These extreme internal temperature fluctuations contribute to the hose degrading from the inside.  Oil splashing on the outside of a radiator hose will cause the hose material to soften over time.  Ozone can also eat away at the hose.  The bottom line is that radiator hoses don’t last forever and will need to be replaced.

If you see steam coming from under your hood, you probably have a cooling system leak somewhere.  Other signs to look for are puddles of coolant under the vehicle, and bulges, cracks, or a spongy feel in the radiator hose.  If you are experiencing any of these symptoms, have your cooling system inspected by a professional as soon as possible.

If you have any cooling system repairs, like a water pump replacement, hose replacement or radiator repair, it is also a good idea to have your hoses replaced at the same time, along with the radiator pressure cap.  It is very important that the coolant be serviced when you replace a radiator or water pump so that there are plenty of anti-corrosion additives in the coolant to coat and protect the new parts that have been installed.  Simply reusing the old coolant can lead to rapid corrosion of the newly installed parts.

The most common reason for engine failure is a failed cooling system.  Ask your service adviser if it’s time for a cooling system inspection or service.  You can eliminate potentially disastrous damage with proper cooling system maintenance.

Give us a call and let us know how we can help.

Thermostat

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The thermostat is part of your cooling system.  The thermostats in your vehicle perform a similar function to the thermostats in your home.  At home, you set your thermostat to maintain a comfortable temperature range.  Then when your home gets too hot, the air conditioning kicks on or when it gets too cool, the heater turns on.

So your engine also has an optimal temperature range:  warm enough to run efficiently and not so hot as to cause engine damage.  Your vehicle’s thermostat is a valve between the engine and the radiator.  When Denver residents first start a cold engine, the valve (thermostat) is closed, allowing the coolant surrounding the engine to warm up to the proper operating temperature.  As the coolant gets hotter, the thermostat opens, allowing coolant to flow through to the radiator to be cooled.  The thermostat opens and closes to keep the engine within a certain temperature range.

Now thermostats are rated for a specific temperature depending on the engine – not a one size fits all proposition.  Thermostats are subject to normal wear.  Proper operation depends on a special wax that expands as it heats up to open a spring-loaded valve.  A worn thermostat could stick in the open position causing the engine to run too cool.  This is inefficient and could affect performance and fuel economy.  If a thermostat sticks in the closed position, the engine can be subject to the results of overheating.

There isn’t a specific routine for drivers to maintain their thermostat, but maintaining the cooling system by changing the coolant/antifreeze on a regular schedule will make sure the coolant has enough corrosion inhibitors to protect the thermostat and other system components.  Cooling system experts and the team at Express Car Care in Denver recommend replacing your thermostats when you do a coolant flush or exchange.  Also, thermostats usually wear out faster than your hoses, so if a worn hose replacement is performed, replace the thermostat at the same time.

If your temperature warning light comes on, have an inspection of your cooling system right away.  This could be a thermostat.  The thermostat could also be the culprit for Denver residents who aren’t getting hot air when they turn on their heater.

The thermostat is a relatively inexpensive part that stands guard between you and catastrophic engine damage.  Follow your owner’s manual instructions or check with your friendly and knowledgeable Express Car Care service adviser to see if it’s time for a cooling system inspection or service.

Your Car’s Heating and Cooling System Does More Than Keeping You Comfortable

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When most people think about temperature control inside their vehicle, they usually consider them to be two separate systems. Heating is used in the winter, cooling is used in the summer, with the most important part of the process being comfort.

Imagine arriving at your destination if you’ve driven across town in one-hundred degree heat and no air conditioning. It would be a miserable experience. Equally so as the temperatures creep towards zero, without a heater warming the interior cabin.

What makes both possible is the ventilation system that connects all the parts together. Yes, you need a heater and an air conditioner. But without the ventilation system providing a way for cooled or warmed air to move, you would be left to control temperatures by raising and lowering your windows.

So, how does your car’s heating and cooling system work?

Let’s talk about how your heater and air conditioner are related.

How a car’s heater and air conditioning works

Your car’s heater is a smaller version of the cooling system. Coolant circulates through a small radiator, often called a heater core. A fan is used at the front of the heater core to blow the cold air from outside over the fins. As this air moves through the heater core, it heats and becomes the warm air that is pumped inside the cabin through the heater vents.

Your Car’s Heating and Cooling System Does More Than Keeping You ComfortableThe cooling system consists of a compressor, condenser, and evaporator. Refrigerant is compressed in the compressor, which turns into a hot gas. It moves to the condenser where it is cooled to a liquid state. It continues to move through the system, returning to a low-pressure gas as it rapidly cools in the evaporator. A fan blows over the evaporator during this process, cooling the air that blows through the vents inside the cabin of your vehicle.

Sounds easy enough, right? It’s easy to see how they are both connected. But they intertwine even more.

As the engine runs and causes friction and combustion, heat builds. Most of this is expelled through the exhaust system, but the remaining heat must be handled in some way. Coolant and water mix within the engine block and radiator to release the heat into the atmosphere. On cold days, that heat travels inside your cabin for warmth. But on warm days, your engine could overheat if something disrupts this process. That means your heating system is responsible for keeping your engine functioning properly all year long.

Likewise, on cold winter mornings you might wake to a layer of frost spread across your windshield. It’s not just your car’s heating system that warms it up, it’s the cooling system too. Multiple components all work together to pull humidity out of the air, helping to defrost your windows so you can see to drive. If you notice defogging issues, it may be time to recharge your air conditioning system, or check for leaks or damage.

What are the common problems with a vehicle’s heating and cooling system?

Have you ever heard of a vehicle needing to recharge the air conditioning system? That means ensuring the refrigerant is at proper levels to do its job well.

From time to time, refrigerants can wear down or leak. If this is the case, the equipment should be repaired before refilling to ensure maximum efficiency. It can be difficult to tell as some leaks are tiny at best. But you can watch for puddles forming that are either green or orange. Healthy coolant will be green (ethylene glycol) or orange (Dexcool). If it puddles as more of a rusty color, that means the rust inhibitor in the coolant is no longer doing its job, so rust and scale are building up. Changing it out will breathe new life back into your heating and cooling system.

Topping off the coolant may seem like a quick and easy thing to do. You can buy coolant at your local auto parts store. But the bigger question is: why was it leaking in the first place? The way the system is built, it should never leak coolant. That means somewhere there is a compromise to the system. It could be a cracked hose. It might be a radiator cap gone bad. It could be a damaged water pipe. But if you don’t get to the root of the problem and fix it, you’ll continue to have trouble even after filling up the coolant.

Depending on how old your vehicle is could be a problem too. The EPA phased out the use of R-12 coolant in all refrigeration systems, replacing it with R-134. R-12 has been determined to cause ozone depletion, impacting the ozone layer. So it’s been phased out over time with one safer for the environment. If you still drive a vehicle that uses R-12, you may need to retrofit the system to handle the newer R-134 coolant. Seales, hoses, even the compressor might need to be swapped for a newer model.

Corrosion will also cause the core to leak. Over time, it may leak steam into the interior cabin and fog up your windows. You may also detect a leak by a sweet smell coming through your vents when the system is in operation.

Prevention methods

In most cases, your car’s heating and cooling system won’t create a lot of problems. If you pay attention to your car, running standard performance checks every time you drive, you’ll notice a problem long before it grows into something bigger. If you notice a problem with heating or cooling, hear a strange noise, or smell something unusual, don’t ignore it. Once may be a fluke, but if it happens multiple times, bring your car in for an inspection.

With winter coming, it’s especially important to ensure your heating system is working at its best. Have you noticed problems with your air conditioning this summer? Is your car not as cold as it once was? Schedule a maintenance visit today to ensure your heating and cooling system are fully operational.

It will ensure you have a stress-free driving experience every time you head out the door.

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