Skip the auto shop - Our mechanics make house calls

Q: Thermostat problems

asked by on

The A/C in my car blows only hot air. The thermostat was working great until last week. Now when it gets to 80 it starts blowing the hot air. What is causing this and can it be fixed?

There are a few common causes for the AC blowing hot air, the most common is that the vehicle is low on refrigerant, other causes could be the blend motor has failed or the compressor is not working properly. A qualified technician like the ones at YourMechanic will have little trouble diagnosing this AC issue and performing any required repairs.

Was this answer helpful?

Need advice from certified mechanic? Get help now!

Over 1000 mechanics are ready to answer your question.
The statements expressed above are only for informational purposes and should be independently verified. Please see our terms of service for more details

Get an instant quote for your car

Our certified mechanics come to you ・Backed by 12-month, 12,000-mile guarantee・Fair and transparent pricing

Get a quote

What others are asking

Q: I have a new thermostat, how much should it cost to change it out?

Billing question sent to CS for the cost to replace the thermostat on a 2010 Jeep Liberty V6- 3.7L.

Q: The car shutters, has difficulty accelerating

The flashing Check Engine Light indicates a fault that has the potential to damage the vehicle's catalytic converter. The car flashes the Check Engine Light to let you know that the car should be checked as soon as possible. Catalytic...

Q: Oil pressure light

Hi There, It sounds like you may have run the engine low on oil for some time resulting in a metal on metal noise sound as you describe. The oil pressure light will usually come on when a few things...

Related articles

What Causes Hoses to Leak?
While the largest part of your engine is mechanical, hydraulics plays a significant role. You’ll find fluids at work in a number of different areas. Your car's fluids include: Engine oil Transmission...
How Long Does a Distributor O Ring Last?
The distributor is part of the ignition system in your vehicle and its purpose is to route high voltage from the ignition coil to the spark plug. The spark plug then...
What are the Car Pool Rules in Hawaii?
Hawaii is widely regarded as a land of vacation and relaxation, and as such, its scenic roads and routes are far better known than the state’s freeways. But, as with all...