Why Is Your Subaru Car Heater Blowing Cold Air?

If you've noticed your Subaru car heater blowing cold air, especially during those chilly mornings, it's a sign that your vehicle requires attention. At Empire Subaru, we understand the importance of a properly functioning heater for your comfort and safety. Let's delve into the reasons behind this issue and how it can be resolved.

Common Causes of Heater Malfunction

A car heater that does not provide warm air can be due to various issues. Understanding these can help in identifying the root cause and seeking appropriate service.

Low Coolant Level

The heater system in your Subaru uses the same coolant that circulates through your engine. If the coolant level is low, it can affect the heater's ability to produce warm air. Low coolant levels might also indicate a leak in the system, which needs immediate attention to prevent engine overheating.

Thermostat Issues

The thermostat in your Subaru regulates the flow of coolant to the engine and heater. If the thermostat is stuck in the open position, it prevents the engine from reaching its optimal operating temperature, leading to the heater blowing cold air.

Heater Core Problems

The heater core is like a small radiator that transfers heat from the engine to the cabin. If it's clogged or damaged, it can hinder the flow of warm air. Symptoms of a heater core issue include a sweet smell in the cabin or fogging inside your car, along with the heater blowing cold air.

Faulty Heating Controls

Sometimes the issue could be as simple as malfunctioning controls. If the controls that regulate the heating system are not working correctly, they might fail to signal the heater to produce warm air.

Air Trapped in the Cooling System

Air pockets in the cooling system can block the flow of coolant to the heater core, preventing the heater from warming up. This issue often arises after coolant has been drained and refilled, possibly during a service.

Professional Diagnosis and Solutions

Diagnosing and fixing a heater that blows cold air requires a thorough understanding of your Subaru's heating system. Our trained technicians at Empire Subaru offer the expertise to diagnose and resolve these issues.

Expert Inspection and Diagnosis

The first step is a comprehensive inspection of the heating system. This includes checking coolant levels, inspecting the thermostat, evaluating the heater core, and assessing the heating controls. Our technicians use specialized tools to diagnose these components accurately.

Precise Repair and Maintenance

Once the issue is identified, our team provides precise repairs. This might involve refilling or repairing the coolant system, replacing a faulty thermostat, servicing the heater core, or fixing the heating controls. Regular maintenance can also help prevent these issues from recurring.

Ensuring Optimal Performance

Our goal is not just to fix the immediate problem but also to ensure your Subaru's heating system operates at its best. We offer advice on regular maintenance and checks to keep your heating system functioning efficiently.

A Subaru car heater blowing cold air can be a sign of various underlying issues. Addressing these concerns promptly ensures your comfort and the vehicle's optimal performance. Trust the professionals at Empire Subaru for all your service needs. For more information or to schedule a service, feel free to reach out to us.