AC Heater: What Causes Failure and What You Can Do About it

Why Your Car Heater May Stop Working and How to Prevent It

We here in Farmers Branch are bracing ourselves for the artic blast coming in from a winter storm that is tumbling in from the north. And as winter grips the roadways, a functioning car heater is essential for both comfort and safety. But what happens when your car heater stops working? So, in this blog the experts at Meineke in Farmers Branch review the common causes of your vehicle's AC heater, and prevention tips that can save you from a chilly drive and costly repairs.

Common Causes of AC Heater Failure

Low Coolant Levels

*   Your car’s AC heater relies on hot coolant from the engine. So, if the coolant level is low, the heater core won’t receive enough heat to warm the cabin. And leaks or neglecting [regular maintenance](https://www.meineke.com/blog/best-new-years-resolution-regular-automotive-maintenance) are common reasons for low coolant.

Faulty Thermostat

*   The thermostat regulates the engine’s temperature by controlling coolant flow. But, a stuck or malfunctioning [thermostat can prevent the engine](https://www.meineke.com/blog/the-role-of-your-thermostat-how-it-protects-your-engine) from reaching optimal temperature. And this can leave your heater blowing cold air.

Clogged Heater Core

*   Over time, the heater core can become clogged with rust, debris, or sediment, restricting the flow of hot coolant. And this not only affects your heating but can also lead to more severe engine problems.

Blower Motor Issues

*   The blower motor pushes air through the heater core and into the cabin. So, if the motor or its resistor fails, the heater may stop blowing air altogether.

Electrical Problems

*   Wiring issues, blown fuses, or a faulty control panel can disrupt the operation of your car’s heater, leaving you in the cold.

How to Prevent AC Heater Problems

Maintain Coolant Levels

*   Check your coolant levels regularly and top off or replace it as recommended by your vehicle’s manufacturer. And address any leaks promptly.

Inspect the Thermostat

*   Replace your thermostat if you notice signs of failure, such as fluctuating engine temperatures or prolonged warm-up times.

Flush the Cooling System

*   Periodically [flushing your cooling system](https://www.meineke.com/blog/radiator-flush-keeping-your-car-or-truck-at-its-best) removes debris and prevents clogs in the heater core. So, follow your car’s maintenance schedule for the best results. And c[all Meineke in Farmers Branch](tel:9722472600) to schedule a time that meets your lifestyle and budget.

Test the Blower Motor

*   During routine maintenance, the [ASE certified mechanic](https://www.meineke.com/blog/the-most-important-advantages-of-ase-certification) at [Meineke on Valley View Lane in Farmers Branch](https://www.google.com/search?q=2513+Valley+View+Lane+Farmers+Branch%2C+TX+75234&rlz=1C1CHBF_enUS945US945&oq=2513+Valley+View+Lane+Farmers+Branch%2C+TX+75234&gs_lcrp=EgZjaHJvbWUqBggAEEUYOzIGCAAQRRg7MgYIARBFGEAyCAgCEAAYFhgeMgoIAxAAGIAEGKIEMgoIBBAAGIAEGKIEMgoIBRAAGIAEGKIE0gEHMzQwajBqNKgCALACAA&sourceid=chrome&ie=UTF-8) will inspect the blower motor and its components to ensure they’re functioning properly.

Check Electrical Components

*   Regularly inspect fuses, wiring, and the control panel to catch any potential electrical issues early.

Avoid the Risk of a Failing AC Heater at Meineke in Farmers Branch

A malfunctioning car heater can turn a winter drive into an uncomfortable ordeal. But, by staying proactive with maintenance and addressing issues as they arise, you can ensure your heater keeps you warm all season long. But, if you’re experiencing heater problems, don’t hesitate, call Meineke in Farmers Branch to consult a trusted mechanic for a thorough diagnosis and repair.

If the Meineke in Farmers Branch is not a convenient auto repair center for you, here are a few other Meineke auto repair centers in Texas:

Meineke Car Care Center - Hwy 123
1252 Highway 123
San Marcos, TX 78666
Call (512) 396-8285

Meineke Car Care - Altamesa Dr.
3012 Altamesa Blvd
Fort Worth, TX 76133
Call (682) 703-2378

Meineke Car Care - Bryant Irvin Rd.
5031 Bryant Irvin Road
Fort Worth, TX 76132
Call (817) 744-7900

Meineke Car Care - W Northwest Hwy.
11613 East Northwest Highway
Dallas, TX 75218
Call (214) 221-1177

Meineke Car Car - Broadway Blvd.
5615 Broadway Blvd.
Garland, TX 75043
Call (469) 366-9360

Meineke Car Care - Burnet Road
7829 Burnet Road
Austin, TX 78757
Call (512) 814-0877

Meineke Car Care - Valley View Lane 2513 Valley View Lane
Farmers Branch, TX 75234
Call (972) 247-2600

Meineke Car Care - North Bell Blvd.
2105 North Bell Blvd
Cedar Park, TX 78613
Call (512) 686-5491

Meineke Car Care - Kirkwood Rd.
2343 S. Kirkwood Road
Houston, TX 77077
Call (832) 288-5380

Meineke Car Care - Poly Webb Rd.
5980 Poly Webb Road
Arlington, TX 76016
Call (817) 765-2194

Meineke Car Care - W. Main St.
1550 West Main Street
Lewisville, TX 75067
Call (469) 312-3356