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.

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: Heater is not warm enough

Hi, thanks for writing in. The temperature of your heater is going to depend on the circulation of the coolant, temperature of the engine, and the associated parts working correctly. The blend door actuators, level of coolant in the system,...

Q: Engine cuts off and electrical components malfunction - 1995 Oldsmobile Delta 88

Relays provide for managed power distribution. A chattering relay is a failure mode where the electrical contacts are burned and aren't delivering power. I would have a professional mechanic identify which relay is chattering and determine how relevant that relay...

Q: 2011 impala speedometer up & down while idling, car cuts off at low lidle

I think you mean that the tachometer is going up and down, not the speedometer. If the tachometer is going up and down and then the engine stalls, it's an indication that the engine has a major vacuum leak...

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...
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...
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...