Skip the auto shop - Our mechanics make house calls

Q: Heater only blowing cold air.

asked by on

Heater blower works fine, but the heater only blows cold air.

A: There are two likely causes for your concer...

There are two likely causes for your concern. Either your heater core inside your dashboard is clogged, or one of the doors that directs the air to your heater core is malfunctioning. I would enlist the help of a certified mechanic to check your heater for these concerns and have him make the necessary repairs to get your heater blowing hot air again.

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

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: When the hot air is turned on, the drivers side blows cold and passenger side blows hot.

Hi there, thanks for writing in. On most imports and some domestic cars, there the AC blend door distributes the air to different vents when the option is selected. This component is controlled by an electric actuator. Sometimes the fuse...

Q: Air conditioner making squealing noise

The most likely cause for this is a belt; you have a total of three. They should all be replaced at the same time if that is the problem; the AC has its own. If the belt is good, and...

Q: Power steering goes out

On the GL450's three are 4 common issues that can cause this. Mercedes Benz has a recall for the failure of a driving pin that controls power steering pressure. Your local dealer will need to be contacted to see if...

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...
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...
P2428 OBD-II Trouble Code: Exhaust Gas Temperature Too High Bank 1
P2428 code definition A P2428 trouble code signifies that the PCM has detected a problem in the exhaust gas temperature sensor circuit in bank 1, which subsequently contains the number one...