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Heating and Air

Why Is My Heating Unit Not Working But My AC Is?

By February 22, 2020April 11th, 2023No Comments
Why Is My Heating Unit Not Working But My AC Is, Why Is My Heating Unit Not Working But My AC Is?

Even if your AC has worked well all summer, your heating unit can still fail you last minute. The last thing you want to worry about is a heater malfunction in the middle of winter, so staying on top of your unit and its efficiency is key to a well-working system and an increase in its longevity. There can be many reasons why your heating unit isn’t working, but your AC unit is. To keep your home as warm as possible this winter, it is crucial to learn what the problem is and the fastest way to fix it. Here are some of the most common reasons your home heating unit may not be working: 

Lack of Energy

If your heater doesn’t turn on, it may not be receiving power. This can often be resolved by switching the energy breaker or valve on or off and back on again to reset it. However, if this quick solution does not help, it may be a more severe issue involving faulty wiring or electrical problems. In this case, it is best to leave the repair to a trained technician for safety reasons. 


If air seems to be circulating, but it is not reaching every room in the house, your ductwork may be leaking. Ductwork can be easily damaged, especially during home renovations, harsh weather conditions, or simply over time. Try locating unusually warm or drafty spots to have a professional check during an inspection. 

Malfunctioning Thermostat

Thermostats can be a rather delicate piece to your HVAC system puzzle, and any disturbance could affect its functionality. A thermostat working incorrectly could cause a heating unit to work erratically, changing settings more or less often than it should or affecting temperatures throughout your home. If you have a faulty thermostat, it may be time for an upgrade; check out Lowery’s available American Standard smart thermostats and installations. 

Clogged Ducts

Uneven or cool airflow throughout your home can be the result of clogged ductwork. Ducts in your home can become easily blocked or clogged with debris or dust buildup, especially through the winter months, when most households have less ventilation. Regularly cleaning your vents can reduce dust’s effect on your heating system. Additionally, frequently changing your home’s indoor filters can increase airflow circulation and overall air quality. 

Why Is My Heating Unit Not Working But My AC Is?

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