Heater Systems

Auto Heater Service & Repair

Much like your Air Conditioning system, a good auto heater is essential for comfort, especially during the cold winter months in Cleveland, TN! If your heating system is not working correctly, it could be a sign of a problem with your heater core, control, blower motor, thermostat or indicate a blocked duct or vent.

How does a car heater work?

A car heater works by using the heat generated by the engine to warm the air inside the cabin. The engine coolant flows through a small radiator called the heater core, which is located inside the dashboard. As the coolant flows through the heater core, it transfers its heat to the metal fins of the core. A blower motor then forces air over the heater core, which heats up the air and blows it into the cabin through the vents.


Why is my car’s heater not getting hot?


Your car’s heater not getting hot can be a major inconvenience, especially on cold days. There are several reasons why this can happen, but some of the most common include:

  • Low coolant: If the coolant level in your car is too low, there won’t be enough fluid to circulate through the heater core and warm the air. Car heaters typically blow cool air for a minute or two after startup, until the engine has had a chance to warm up. If your heater continues to blow cool air after the engine has warmed up, it may be due to low coolant levels.
  • Faulty thermostat: The thermostat regulates the temperature of your engine coolant. If your car’s temperature gauge still says “C” after the engine has warmed up, it could be a sign of a faulty thermostat. If it’s not working properly, it can prevent the engine from reaching operating temperature, which will also affect the heater.
  • Clogged heater core: The heater core is a small radiator that heats the air that flows into your car’s cabin. If it gets clogged with debris, it can restrict the flow of coolant and reduce the amount of heat that’s produced.
  • Faulty heater fan: The heater fan is responsible for blowing the heated air into the cabin. If it’s not working, you won’t get any heat, no matter how hot the coolant is.
  • Electrical problems: There are a number of electrical components that can affect the operation of your car’s heater, such as the blower motor resistor, HVAC controls, and wiring. If any of these components fail, it can cause the heater to malfunction.


Heater Repair at Smith Automotive

Heater Diagnosis:

If your car heater is not working properly, our heater diagnosis service can help you get it back in working order. Our technicians will perform a comprehensive inspection of your heating system, including the heater core, blower motor, thermostat, controls, ducts, and vents. We will analyze the diagnostic results and identify any problems, such as control problems, blower motor malfunctions, thermostat irregularities, or blocked ducts and vents.

Heater Core Replacement:

The heater core is a critical component of your vehicle’s heating system. It’s responsible for producing the warm air that keeps you comfortable in colder temperatures. Over time, heater cores can become clogged, corroded, or develop leaks, leading to insufficient heating or even coolant leakage. Our skilled technicians are well-versed in heater core replacement, and we provide top-quality service to address these issues effectively. When you choose us for heater core replacement, you can expect:

  • Expert Diagnosis: Our team conducts a thorough assessment to determine if your heater core requires replacement. We inspect for signs of clogs, leaks, or corrosion.
  • Quality Parts: We use high-quality, reliable replacement heater cores to ensure your heating system operates efficiently and safely.
  • Professional Installation: Our technicians are experienced in the precise installation of heater cores, ensuring that your vehicle’s heating system functions optimally.
  • Thorough Testing: We rigorously test your heating system after the replacement to verify that it’s producing warm air consistently and that there are no leaks.


How to Protect Your Car’s Heater during the Winter

  • Flush the coolant regularly to keep the cooling system clean.
  • Use high-quality antifreeze to protect the engine and cooling system.
  • Clean and remove debris from the heating box regularly.
  • Have your car inspected by a mechanic if the heating system stops working as early as possible.


Find out more about our services.