Q: Heater blows luke warm air.

asked by on

Heater bows luke warm air even when totally warmed up.

My car has 198000 miles.
My car has an automatic transmission.

The [heater core]((https://www.yourmechanic.com/services/heater-is-not-working-inspection) is a small radiator like unit that circulates the hot coolant from the engine through the heater core which then uses this warm coolant to heat the inside of the car with the help of the blower motor that blows the warm air through the vents inside the car. The other possibility is that the thermostat may not be allowing the engine to reach a normal operating temperature and since the engine’s warm coolant is the essential source of the heater core supplying heat to the inside of the vehicle, this can impact the warmth of the heat inside the vehicle. I would suggest having an expert from YourMechanic come to your location to diagnose your heating system.

Was this answer helpful?

Need advice from certified mechanic? Get help now!

Over 1,000 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
  1. Home
  2. Questions
  3. Heater blows luke warm air.

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: Stuck thermostat?

From what you described, it potentially might be a few different things that may be wrong with your cooling system. As you may know, when the coolant is pumped through the radiator to the engine, some of this coolant is...

Q: getting p2181 even after changing the CTS 2007 Audi A4

Hi there - the problem is a failing thermostat. On this Audi, engine management has a "warm-up" profile it expects the thermostat to manage while the engine comes up to temperature. The fact that yours is not reaching correct operating...

Q: Engine makes really loud noise like a motorcycle 1998 Lincoln Navigator

Hi there - your symptom description suggests that an engine backfire in the exhaust has caused the muffler or catalytic converter to rupture. This would explain the noisier running and some of the smell you are experiencing. Check first to...

Related articles

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...
P2103 OBD-II Trouble Code: Throttle Actuator Control Motor Circuit High
P2103 means there is a fault with the throttle actuator control motor circuit, likely due to a defective electrical component or part.