Skip the auto shop - Our mechanics make house calls

Signs You Need a New Car Heater

person turning a car heater up to high

With winter right around the corner, now’s the time for drivers across the nation to make sure they’re ready with a functioning heater. The last thing you’ll want on a frigid morning is to find out you’re stuck with a chilly commute. While there can be a number of causes for a faulty heater, you should first understand the main signs of a bad one.

Lukewarm air is coming out of your car heater

If the air blowing out of your vehicle’s vents at the hottest setting is just barely warmer than the air outside, chances are high you have a dirty or clogged heater core. You can flush out your heater core to get some efficiency back, or have a professional mobile mechanic replace it wherever you are.

No air is coming through the vents of your car heater

If your vents seem more like brick walls than passageways, there could be two things wrong. One, the blower motor for the HVAC system is faulty, meaning whenever you try and change the fan speed, nothing changes. One way to confirm the blower motor is bad is to turn on the heat and feel for residual warmth as the engine heats up. If you can’t feel anything and the engine is at full operating temperature, chances are high your heater core is no longer functioning.

The car heater is not heating up fast enough

When your engine is cold and the air outside is cold, no car will be able to instantly pump out hot air. While some newer vehicles are quick to build up some heat, it may require older models a bit more time to circulate warm air throughout the cabin. However, if it’s taking your car simply too long for warm air to come through, chances are your heater is in bad shape. This usually means the heater core is dirty and can’t pass enough warm air through the vents as intended from the factory.

The car heater has a leaking interior

When your vehicle’s heater core goes bad, it can often leak, dripping condensation into the interior. This often impacts the passenger side floor and usually requires the replacement of the heater core itself.

If your heater isn't functioning at its best have a professional technician, such as one from YourMechanic, look at it for you. There’s no reason to go through the season without any salvation from old man winter. We’ll come to you and diagnose, fix and maintain your ride all year long.

The statements expressed above are only for informational purposes and should be independently verified. Please see our terms of service for more details
Icon-warranty_badge-02

Skip the repair shop, our top-rated mechanics come to you.

At your home or office

Choose from 600+ repair, maintenance & diagnostic services. Our top-rated mechanics bring all parts & tools to your location.

Fair & transparent pricing

See labor & parts costs upfront, so you can book with confidence.

12-month, 12,000-mile warranty

Our services are backed by a 12-month, 12,000-mile warranty for your peace of mind.

Get A Quote

Need Help With Your Car?

Our certified mobile mechanics make house calls in over 2,000 U.S. cities. Fast, free online quotes for your car repair.

GET A QUOTE

Post a question and get free advice from our certified mechanics.

ASK A QUESTION

More related articles

P0222 OBD-II Trouble Code: Throttle/Pedal Position Switch/Sensor B Circuit Low Input
P0222 code definition Throttle/Pedal Position Switch/Sensor B Circuit Low Input What the P0222 code means The manufacturer specifies a range of acceptable voltage to be produced from the throttle position...
How to Buy Fuel Treatments
Adding a fuel additive to your gas tank when you fill up is one way to clean vital engine parts of deposits, improve the performance of your engine,...
P2422 OBD-II Trouble Code: Evaporative Emissions Control System (EVAP) Vent Valve Stuck Closed
Diagnostic Trouble Code (DTC): P2422 P2422 code definition Evaporative Emissions Control System (EVAP) Vent Valve Stuck Closed Related Trouble Codes: P2441: EVAP Vent Valve Stuck Open EVAP trouble...


Related questions

Q: My 1999 BMW blower comes on whenever I put keys in the switch and turn the motor on.

Hi there, thanks for writing in. If this comes on right when the car is turned on, then most of the time it is caused by a bad blower resistor module. This module fails internally and causes this to occur....

Q: Engine heating issue.

Hi there. From the description you provided, it would appear the engine does not have a head gasket problem from being overheated. If the temperature climbs above the middle point while the vehicle is at a stop it could be...

Q: When I switch from heat to AC, the heat still blows?

Hi, thanks for writing in. If your heat is still blowing when the air conditioning is turned on and the compressor is working, then it is likely that the blend door actuator has failed. The blend door actuator is responsible...