Heating

My Furnace Keeps Turning On and Off. Is It Broken?

Filter: replace it if it's dirty.
Thermostat: put in new batteries and move anything warm away from it.
Vents: make sure nothing is blocking them.

October 20, 20261 min read

A furnace that keeps starting and stopping is "short cycling." If you smell gas, leave the house and call your gas company or 911 from outside.

Otherwise, check these three things:

Still cycling? It may be a dirty flame sensor or an overheating part. Get it checked early to avoid bigger repairs.

General Air Pro (NJ HVACR License #19HC00888700) serves Princeton, Edison and nearby towns.

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