Posted on 2/28/2025
A failing car heater is more than just an inconvenience, especially in cold weather. When your heater stops working, it’s easy to assume the issue is minor, but in many cases, it can point to deeper problems within your vehicle’s cooling system. A properly functioning heater relies on the circulation of hot coolant through the heater core, which then transfers heat into the cabin. When this system fails, it could be due to low coolant levels, a malfunctioning thermostat, or even a clogged heater core. Knowing what to look for when your car heater stops working can help you prevent more serious engine problems down the road. How Your Car’s Heater Works Your car’s heating system is connected to the cooling system, which regulates engine temperature and keeps it from overheating. The engine produces an immense amount of heat, and rather than wasting it, the system redirects a portion through the heater core, which then warms the air that flows in ... read more