My furnace is turning on and off repeatedly, what do I do?

  • Prime HVAC Solutions Inc.

If your furnace is turning on and off at a rhythmic pattern, which isn’t normal, there is a good chance you are experiencing ‘short cycling’. This might be a symptom of a much greater problem, and if ignored could cause more damage to your furnace or central heating unit. Common causes of short cycling may include a clogged air filter, faulty flame sensor, defective thermostat, or a blocked vent on the outside of the building. If this is occurring during the winter, a very common cause is that an outside vent is plugging with snow or ice. Go outside and have a look and clear all debris out of the vents. If this isn’t your problem, call the furnace repair technicians at Prime HVAC Solutions immediately, before permanent damage is done to your heating unit or central system.