It can be frustrating to need your furnace to work but find out that it is not turning on or blowing heated air. In some temperatures, this type of situation can be dangerous. However, many times there are simple things that can be done to get a furnace working. The following are a few things that you should check if your furnace is not working properly.
Circuit Breaker Issue
If the circuit that provides power to the furnace trips, then the furnace will not come on. This is the first thing you should check since it will be a simple matter of switching it back to the "on" position. Sometimes the switches in breaker boxes may get stuck in between the "on and off" positions. Ensure you push to off and then to on to rule out this potential problem. If the furnace turns on but the circuit breaker continues to trip into the "off" position, it may be a sign of an electrical issue. For example, the furnace is likely overloading the circuit, and it may be necessary to install another breaker box or make an electrical repair.
No one is perfect, and a number of people have gotten frustrated about their furnaces not turning on and discovered that they had made a mistake and not turned the furnace on. Check to ensure that the switch on the furnace is not set to the "off" position.
Wrong Thermostat Setting
Perhaps you have enjoyed the warm weather and gotten accustomed to setting your thermostat to the "cool" setting. Unfortunately, your thermostat and HVAC system are complex, but they can only do what you set them to do. If you accidentally set the thermostat to a cool setting, your heat is not going to come on no matter how cold your home gets. The cool air may eventually shut-off, though. This is why a simple check of whether the thermostat is set to cool or heat is sensible.
A clogged furnace filter may impede heat flow. If this is the issue, you might experience low airflow. Changing the furnace filter should correct the issue. Keep in mind that dirty furnace filters are a fire risk.
An HVAC contractor is a good resource to use if your furnace still is not working. They are also ideal to contact if your furnace has not been serviced for the cold season. These contractors can inspect your furnace and determine if it has reached the end of its service life, is in need of repairs, of if you're in need of a home furnace replacement.
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