Q: AC blowing warm air, ac compressor bad?

asked by on

My AC has recently began to blow warm air. I recently just had it serviced with new refridgerent about 2 weeks ago, it worked great for about a week, but now it is not blowing cold air anymore. This is the original ac compressor, have never had any issues before.

My car has 190000 miles.
My car has an automatic transmission.

There are several issues that can cause your A/C to blow warm air. Although the compressor is on that list, one of the most common causes of warm air blowing from the A/C is a bad or failing A/C high pressure hose. The high pressure hose increases and decreases A/C pressure during different driving conditions. If the warm air is coming from A/C vents more frequently when you are at idle, this could be the issue.

There could be other issues that are causing this problem which is why it’s a good idea to have a local ASE certified mechanic help you properly diagnose the problem with your A/C. It will save you a lot of frustration and ensure the A/C is fixed sooner rather than later.

Was this answer helpful?

Need advice from certified mechanic? Get help now!

Over 1,000 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

Ask a Mechanic
(100% Free)

Have a car question? Get free advice from our top-rated mechanics.

Ask A Mechanic
Over 10,000 questions answered!
  1. Home
  2. Questions
  3. AC blowing warm air, ac compressor bad?

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: Do you need to reprogram after replacing throttle body on 04 trailblazer

The Service Manual does not "require" any specific intervention (re-learn procedure). On this vehicle, the PCM will, by default, update itself to new values, just as you idle and drive the vehicle, if such new values are required. Even if...

Q: Heater only blowing cold air.

There are two likely causes for your concern. Either your heater core inside your dashboard is clogged, or one of the doors that directs the air to your heater core is malfunctioning. I would enlist the help of a certified...

Q: We have a new battery, new alternator, new coil pk, new master fuse and the car still won't hold power.

Claimed by Tim Charlet

Related articles

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...
P2103 OBD-II Trouble Code: Throttle Actuator Control Motor Circuit High
P2103 means there is a fault with the throttle actuator control motor circuit, likely due to a defective electrical component or part.