Diagnosing Common Car A/C Problems

May 20, 2021

Don't Lose Your Cool

Don’t Lose Your Cool!

Diagnosing Common A/C Problems

We are all familiar with the jokes about unpredictable Cleveland weather. One day, you are bundled up and cranking the heat in your car and the next day, you are blasting the A/C. You count on your vehicle to meet your changing heating and cooling needs without giving it a second thought—until the system doesn’t work as it should.

If your vehicle’s air conditioner has an undiagnosed problem, you might soon experience this scenario: You turn the A/C on, adjust the dial, and wait for cool air, but instead of a strong wave of cold air, you are blasted with hot air. Or, you hear a loud noise as the A/C blows a very faint stream of cool air. Neither situation is ideal on a hot, muggy summer day in Northeast Ohio. So, let’s make sure you understand the most common car A/C problems—and that you know when it is time to bring your vehicle to Rad Air for air conditioner repair.


Problem: Refrigerant Leak

Your car’s A/C system relies on a refrigerant that changes states (liquid to gas and gas to liquid) cycling through the system. The heart of the system is the A/C compressor which builds the high-side pressure to help condense the refrigerant; therefore, the system operates at high pressure. This high pressure, combined with our harsh climate can take a toll on the components over time. Refrigerant leaks can occur due to worn-out or corroded components, compromised seals/fittings, or cracked dry-rotted hoses. As refrigerant is a colorless and odorless gas, it is very difficult to pinpoint leaks if you are not properly equipped with the correct tools. While it can be tricky to pinpoint the source of a refrigerant leak, an experienced A/C technician will be able to accurately identify and repair the leak.


Problem: Broken Compressor

If your A/C is blowing hot air, you already know you have a problem. Warm air can be one of the first signs that the refrigerant levels may be low and/or you have another issue with the system. A sure sign of a failing compressor is if you are hearing a grinding or squealing noise when you try to run the A/C. The compressor is the heart of the system and compresses the hot refrigerant to high pressure and then pumps it into the condenser. If the compressor is failing, you have a failing A/C system.


Problem: Electrical Issue

A modern automotive air conditioning system is controlled by one or two computers, several modules, sensors, and specialized motors to help control the temperature in your vehicle. Like any computer, it can fail for a variety of reasons, and it could be the reason your car’s A/C is not working properly. For example, a blown fuse or a loose connection in the electrical system can cause the A/C to stop working. A faulty interior or exterior sensor can also result in uneven cooling in your car’s cabin. If you suspect an issue with your car’s climate control system, have it assessed by a qualified technician. Rad Air has significant experience diagnosing and resolving electrical issues with automatic climate controls and dual climate controls.

Now is the time to have your car’s air conditioner inspected and repaired if needed. We recommend having your A/C serviced before the summer instead of waiting until you hear an odd noise or can’t get cool air to flow. Maintain your A/C system now with our seasonal A/C Performance Check and Cabin Filter Replacement special. Just bring this coupon with you to your service.


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