The Truth About Furnace Cycling in Deep Cold

Written By Ashly Hughes

Short cycling is when your furnace keeps turning on and off too quickly. It can be caused by clogged filters, oversized systems, or faulty thermostats — all of which get worse in extreme cold.

If your furnace seems restless, here’s what to do:

  • Replace the filter if it’s dirty

  • Make sure vents are open and unblocked

  • Have a pro check your system’s sizing and controls

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A furnace working smarter — not harder — means longer lifespan and fewer headaches.

Ashly Hughes
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