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.

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!
  1. Home
  2. Questions
  3. Air conditioner blowing warm air. Heat blowing warm air. Neither hot or cold

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: Air conditioning only blowing cold on one speed

From what I see, it seems that your Jeep is having issues with the part known as the blower motor. Unfortunately though with the limited information provided, it is difficult to diagnose whether your blower motor’s status remained the same...

Q: Timing belt

Hi there. You need to slowly move each of the sprockets into the correct position by hand. If you notice any binding then you need to stop so that nothing bends. Hopefully when you started it you didn't bend anything....

Q: 2002 PT Cruiser spraying coolant over engine estimated cost to fix

There are a number of things that may cause the coolant leak to spray all over the motor. The fact that it is spraying suggests that it may be coming from a hose or junction in the cooling system under...

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...
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...
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.