WHY IS MY CAR AC BLOWING HOT AIR?

Chloe's Automotive Repair • August 21, 2022

WHY IS MY CAR AC BLOWING HOT AIR?

Chloe's Automotive Repair • August 21, 2022

The cold air from your car’s air conditioning when driving on a sweltering summer day can be refreshing and relaxing. However, a malfunctioning car AC can blow hot air instead of cold air and spoil summer fun.


There are many reasons why a car’s air conditioner can blow hot air. If your car’s AC is not working as it should, it could be time to reach out to a reliable auto repair shop like Chloe’s Auto Repair and have the problem fixed.

In this guide, we will outline some of the reasons why a car’s AC can blow hot air.



Broken condenser

The condenser is responsible for cooling the hot compressed refrigerant moved from the compressor in order to bring it down to ambient temperature. If the condenser is blocked by dirt or debris, it could result in your car’s air conditioner blowing hot air from your dash. When any part of the condenser starts to malfunction, air won’t reach it, thereby preventing the refrigerant from cooling correctly.


Faulty compressor

The compressor is the heart of your car’s air conditioning system. It is responsible for pressuring the refrigerant fluid and circulating it through the system. Similar to other components of your car, the compressor can wear out over time. If the compressor is not working properly, the refrigerant fluid may not be able to reach the condenser for cooling, and this can cause the AC to blow hot air.

Compressor problems tend to happen in the winter months when the AC is off. You can prevent compressor failure in the winter months by turning on the AC a couple of times every month.


Refrigerant leak

Your car’s AC relies on refrigerant fluid to absorb heat and humidity from the passenger cabin as the fluid alternately expands and condenses. The refrigerant fluid may leak as a result of an old hose or a punctured evaporator. A leak in the AC system can cause the unit to blow hot air, since there isn’t sufficient refrigerant to cool things down. Locating and fixing a refrigerant leak in a car’s AC system is a complicated task that should be left to a reputable auto repair shop that provides AC system repair.


Damaged cooling fans

A car’s AC system comprises cooling fans whose function is to remove heat from the refrigerant fluid. Cooling fans can crack or malfunction, resulting in an inefficient AC system. Damaged cooling fans can only be replaced at a reliable auto repair shop.

Problems with the electrical system


A car’s AC system comprises a maze of wires, switches, and fuses that work together to deliver power to the A/C unit. If an electrical component in the AC system malfunctions, your AC could shut down and blow hot air.

Other reasons why a car AC system may blow hot air include:


  1. A stuck blend-air door Dirty filter A failing expansion valve

If your car AC is blowing hot air, you need to reach out to a dependable auto repair shop for AC system repair.

At Chloe’s Auto Repair, we have a team of technicians who are ready to help you with AC system repair and restore your car AC to good working order.

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Understanding Your Car’s TPMS System: Why It Matters for Safety and Fuel Economy The Tire Pressure Monitoring System (TPMS) is an essential feature in modern vehicles, designed to keep you safe and optimize your vehicle's performance. This system helps monitor air pressure in your tires and alerts you if they become underinflated, ensuring proper tire health, better fuel economy, and peace of mind on the road. What Does TPMS Mean? TPMS stands for Tire Pressure Monitoring System, a technology that tracks your tire pressures in real time. If one or more tires have low air pressure, the TPMS light or a warning light will illuminate on your dashboard. This feature plays a critical role in maintaining proper tire health, which directly affects your vehicle's performance and safety. Why Is Checking Tire Pressure Important? Properly inflated tires are key to: Fuel Economy: Low tire pressure increases rolling resistance, causing your car to use more fuel. By maintaining the correct air pressure, you can maximize your vehicle’s efficiency and save on gas. Safety: Underinflated or overinflated tires can lead to uneven wear, reduced traction, and increased risk of blowouts. Tire Longevity: Proper air pressure ensures even wear and extends the life of your tires. How Does TPMS Work? There are two main types of TPMS: Direct TPMS: Sensors in each tire monitor air pressure and send data to your vehicle’s system. Indirect TPMS: This system uses wheel speed sensors to estimate air pressure based on tire rotation. Both types ensure that if your tire pressure drops below the recommended level, you’ll be alerted by the TPMS light or service tire monitor system message. What Should You Do When the TPMS Warning Light Comes On? Check Your Tire Pressures: Use a reliable tire pressure gauge to measure the air pressure in all tires. Compare these readings to the recommended levels in your vehicle’s owner manual or the sticker inside your driver-side door. Inflate Your Tires: Adjust the pressure to the recommended level for optimal performance. Inspect for Damage : Look for signs of punctures, leaks, or other damage. Visit a Professional: If the warning light remains on, bring your car to a certified technician. At Chloe’s Auto Repair and Tire, we can inspect your service tire monitor system, replace faulty sensors, and reset the system to ensure accurate monitoring. How Does Proper Tire Pressure Impact Fuel Economy? Even a small drop in tire pressure can lead to increased rolling resistance, which makes your engine work harder to move your vehicle. This not only burns more fuel but also contributes to unnecessary wear and tear on your tires. Keeping your tires at the proper air pressure can improve your fuel efficiency by up to 3%, saving you money at the pump. The Role of TPMS in Preventive Maintenance A functioning TPMS system is your first line of defense against underinflated tires. Regularly maintaining your tires and monitoring the TPMS warning light helps you avoid costly repairs, enhances safety, and contributes to a smoother driving experience. Trust Chloe’s Auto Repair and Tire for All Your TPMS Needs At Chloe’s Auto Repair and Tire, we understand the importance of tire maintenance and vehicle safety. If your TPMS light is on or you need help checking your service tire monitor system, our team of expert technicians is here to help. We’ll ensure your tires are properly inflated, inspect for any issues, and reset your system to get you back on the road safely.
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