Skip the auto shop - Our mechanics make house calls

Q: Heater is blowing mixed temperature air into the cabin area.

asked by on

My cars heater blows lukewarm air on the drivers side vent, normal hot air through the middle, and slightly warm air thru the passengers side. Thats pretty much it.

My car has 92000 miles.
My car has an automatic transmission.

A: Hi there. Check the blend doors to the hea...

Hi there. Check the blend doors to the heater system. The doors could have a leak with the weather stripping. Then check the air ducting in the dash up by the heater blower motor and see if there is a leak for cold air to enter. The middle duct gets hot air first, then spreads out to the side air ducts. There could also be a leak where the ducts split off. If you need further assistance with the air ducts having warm air on the ends and hot air in the middle, then seek out a professional, such as one from Your Mechanic, to help you.

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: Causes for heater to blow cold air

Hi...if you are referring to the passenger compartment heater, there are two possible causes of insufficient or no heat. The passenger compartment heater, also known as the "heater core", is essentially a mini radiator and the fluid running through this...

Q: Driver's door not locking

Hello there. For your 2005 Jaguar Vanden Plas, a few different faults can cause the door lock to not work from the remote. If all of the other doors work when the fob lock button is pressed, the fob is...

Q: Bleeding Brakes

It is nearly impossible to bleed brakes with a vacuum pump and not see bubbles. The bubbles are not actually coming from inside the brake line. Therefore, this air is something that can be dismissed. The pedal should still become...

Related articles

P0240 OBD-II Trouble Code: Turbocharger Boost Sensor B Circuit Range/Performance
P0240 code definition Turbocharger Boost Sensor B Circuit Range/Performance What the P0240 code means P0240 is an OBD-II generic code triggered when the Engine Control Module (ECM) detects the intake boost...
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 to Avoid Back Pain in a Car
If you have back problems, sitting in a car for an extended period of time can be excruciating. Even without back problems, you could experience discomfort and soreness from...