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Nov 23 2016

My furnace comes on and goes right back off. Why?


An average furnace will turn on and off at least a few times every hour. If a furnace, however, turns on and then back off in a relatively short amount of time this is referred to as short cycling. This is normally a symptom of a bigger problem. There are several things to consider when a furnace comes on and goes right back off.

Flame Sensor Corrosion

A flame sensor is a safety feature that sometimes can become corroded. A buildup can develop so that the sensor doesn't get a signal that the flame is lit. If the signal isn't working properly the furnace may turn on and off several times.

A Thermostat That's Not Working

A faulty thermostat may cause a furnace to work improperly. Sometimes the thermostat can be placed too close to another source of heat or is affected by direct sunlight which may cause the furnace to turn on and off.

Problems with the Air Filter

The problem might be something as simple as a dirty air filter. Besides an air filter there may be other items in a furnace that need replaced or adjusted. It's recommended to have a furnace inspection in the fall to make sure it's in top condition for the winter season.

Whether you need an inspection or have a specific item on the furnace that needs to be repaired, Comfort Services can take care of all your HVAC needs. They provide a variety of HVAC services including installation and repair for air conditioners, heat pumps, and furnaces. They also provide quality products such as smart thermostats and air purification systems. Contact the experts at Comfort Services for all your HVAC needs.

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