Skip the auto shop - Our mechanics make house calls

Q: Cold mist/smoke like air comes out of the air vents when cold air is on.

asked by on

Cold mist/smoke like air comes out of the air vents when cold air is on. The air is then not as cold. When I turn it off and then wait 10-15 minutes and then turn it on, it is normal again.

My car has 120500 miles.
My car has an automatic transmission.

A: If you are using regular outside air a/c in...

If you are using regular outside air a/c instead of recirculated air you may be getting a large amount of outside air humidity and can cause a mist to come out of the a/c vents. You should make sure the a/c evaporator drain is cleared and drains freely or the water in the a/c cannot drain fast enough and the blower will pick up the water and blow it out the vents.

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・Save up to 30%

Get a quote

What others are asking

Q: How do I know if the fuel pump is bad?

Hi, thanks for writing in. You will need to check the fuel pressure on the fuel pressure port on the engine fuel rail. The pump should be producing at least 56 to 62 psi for SFI engine. If pressure is...

Q: My 06 Tundra SR5 V8 starts and immediatly dies?

Hi there: If you've removed the air intake housing and are attempting to start the engine without it being fully installed; it will die as you've described. If everything is assembled and all sensors are attached; then you might have...

Q: Power windows not working.

The fact that all your windows are not working actually sort of narrows down possibilities. The power coming into your power window circuit is fused voltage, meaning it has a fuse to protect the wiring in case of a short...

Related articles

How Do Power Car Windows Increase Passenger Safety?
Power windows are responsible for approximately 2,000 emergency room visits every year. When a power window closes, it exerts enough force to bruise or break bones, crush fingers, or restrict an airway. Though...
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 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.