Skip the auto shop - Our mechanics make house calls

Q: No cold air from AC

asked by on

The air conditioner only blows hot air.

If the AC is only blowing hot air then most of the time it is because the AC compressor is not turning on. The compressor will not turn on for a number of reasons, but the most common is low refrigerant. If the refrigerant is low then the pressure switches will keep the system from working. I typically start by checking the pressure in the system with a pressure gauge set. If the system is empty then there is a large leak that must be found. If the system is low I would add some refrigerant to see if it helps. If the pressure is good then an electrical diagnosis will need to be done of the control system. If you need to have this done, consider YourMechanic, as a certified mechanic can come to your home or office to diagnose and repair the AC issue.

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

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!

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: AC compressor not spinning on 2000 Suzuki Esteem

Your best fix is going to be replacing the air conditioning compressor assembly as a whole. They can be removed and rebuilt, but where you save buying a new compressor you spend a bit more in manual labor. Before doing...

Q: Clutch doesn't work

The clutch master cylinder supplies pressure from your foot to the clutch slave cylinder. A fluid leak at the master or the slave cylinders would indicate the problem. I would recommend inspecting the fluid level and adjustment. A fluid bleeding...

Q: Strange sound in the engine

There should be a vacuum coming from the oil fill hole with the engine running. This is because vacuum is created inside the engine as the piston moves downward in the cylinder. Also, you should feel vacuum when holding your...

Related articles

Rules of the Road For Iowa Drivers
Driving on the roads requires knowledge of the rules, many of which are based on common sense and courtesy. However, even though you know the rules in...
How Much Does a Mechanic Make in Vermont?
Automotive technician jobs in Vermont have an average mechanic salary of $37k, with some mechanics earning a salary of $53k.
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.