Cooler temperatures have arrived in Schertz, TX, and cold winter weather is on the way. A furnace that won’t turn on is a common problem. Here are three reasons why this issue could happen in your home.
Thermostat Problem
Before calling for a furnace repair, check your thermostat. If it’s set to off, turn it on. If it’s set to cool, switch it to heat. Next, check the temperature setting. If your home is already warmer than the temperature set on the thermostat, the system won’t turn on. If your thermostat doesn’t respond, check its battery. Programmable and smart thermostats use batteries. For a smart thermostat, make sure it’s connected to your Wi-Fi. If your thermostat still doesn’t trigger a heating cycle, you may need a heating repair.
Dirty Air Filter
A dirty air filter impedes the flow of oxygen through the combustion chamber. It also reduces airflow over the heat exchanger. The furnace has safety features that stop it from working if the heat exchanger gets too hot. It’s a good idea to check your air filter once per month, explains the Department of Energy. During the peak heating season, replace the filter monthly. Don’t go more than three months between filter changes.
No Power
Even though your furnace burns natural gas to generate heat, it still requires electrical power. Electricity powers the air blower and its fan. The ignition also uses electricity. If you have a newer unit, its intermittent pilot or hot surface igniter won’t work. When your furnace won’t turn on, and you’ve already checked the thermostat and air filter, check your circuit breaker. If the breaker for the furnace tripped, reset it. If it trips again, you’ll need a heating repair. When the furnace doesn’t turn on despite it having power, it’s time to call for service.
For additional information about why your furnace won’t turn on, take a look at Barrett & Sons Inc.’s furnace repair services, or give us a call today.
