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During a frigid Ohio winter, you want your car heater to turn on and warm up the vehicle with a dependable flip of a switch. A lack of warm air can make for a very uncomfortable ride and require a visit to an auto repair professional. But what causes a heater to break down? Below, learn about a few common reasons your car's heater may be giving out.

Why Is Your Car Heater Not Working?

1. A Broken Thermostat

A heater contains a thermostat that regulates the amount of coolant flowing through the engine and cooling system. When the thermostat breaks down, it may not allow enough coolant to flow through and produce sufficient heat. If you suspect a thermostat issue, make auto repair a priority. Overlooking this possibility could mean that the thermostat doesn't control the engine temperature like it should, which will lead to overheating.

2. Cooling System Issues

auto repairThough it might sound counterintuitive, warm air is produced in a car's cooling system, the same spot where it generates cool air for the vehicle's air conditioning. When the heater is turned on, and the engine has warmed up, the engine heats a coolant and water mix and transfers it through hoses to the heating core. Once there, a fan blows the heat from the core through the vents, and throughout the cabin. 

Low coolant levels, a damaged heating core, and a crack in a hose that lets in cold air can all result in a nonworking heater. If you neglect auto repairs when a cooling system is the problem, the issue will only worsen. An engine needs coolant to maintain its temperature and prevent damage, and a broken core or hose will only keep deteriorating until it's fixed.

3. Fan Problems

Listen for the sound of the fan running when you engage the heater. If you don't hear anything, then the fan is broken and unable to blow heat off the core and out of the vents. This won't get better on its own, and it will leave you without heat. 

An auto repair professional will likely first check the fuses to make sure the fan is getting power. If the fuses aren't the source of the malfunction, a fan replacement will be necessary.

 

When you experience heating issues with your vehicle, take it to the auto repair professionals at The Shop Auto Service. Since 1970, they have been serving the Cincinnati, OH, area. They offer various auto maintenance and repairs, including oil changes, brake services, and tire rotations. Call (513) 861-4445 or visit them online to schedule repairs.

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