Skip the auto shop - Our mechanics make house calls

Q: Air conditioner blowing warm air. Heat blowing warm air. Neither hot or cold

asked by on

My air conditioner is blowing warm air. It blows hard but the air is warm. But then when I turn on my heat it does the same thing. Warm air not hot. I figured it was out of refrigerant but it's full... help please!!

My car has 195000 miles.
My car has an automatic transmission.

A: If the A/C system is full and pressures are...

If the A/C system is full and pressures are reading correctly, and the cooling system is in proper working order (thermostat opens, no overheating, etc.), then most likely the problem lies with the dash. The climate control head unit may be at fault. One or more blend doors behind the dash may be stuck or broken. If you’re unable to fix this issue yourself, consider YourMechanic, as one of our mobile technician can come diagnose the issue with your A/C firsthand and help you fix it accordingly.

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: ETC ISSUES Chrysler 2005 limited

There several potential causes for this. First, there could be a vacuum leak somewhere. In addition, a relearn procedure must be performed after replace the ETC actuator. It's possible that the dealer missed this step. Finally, there could be a...

Q: Loud air conditioner noise

Do you hear the noise with the engine running and A/C off as well? If not, your problem may be the A/C compressor clutch or the bearings in the belt driven compressor pulley. If you always hear the noise while...

Q: My wife's Murano will be driving fine, then it just loses power. Twice it has stopped all together, it will restart after sitting

Hey there, thanks for writing in. Well, you could be correct on assuming the CVT, throttle body or cam sensor could be faulty. However, "guess work" usually ends up costing car owners more money then they should be spending on...

Related articles

How Long Does a Heater Control Valve Last?
Keeping the right amount of coolant in a car is essential in keeping the engine at the right temperature. Failing to have the right amount of coolant or even bad elements...
P0052 OBD-II Trouble Code: HO2S Heater Control Circuit High (Bank 2 Sensor 1)
P0052 code definition HO2S Heater Control Circuit High (Bank 2 Sensor 1) What the P0052 code means This code is seen when the Engine Control Module (ECM) tries to control the...
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...