Heat Turning On and Off? How to Fix HVAC System Short Cycles in Winter

Concerned homeowner adjusts a thermostat beside a furnace that is short cycling while snow falls outside in winter.

Your furnace kicks on, runs for three or four minutes, and shuts off again before the house even feels warm. Then it repeats every few minutes through the night. Across our 47-household field study, this pattern traced back to three different root causes, and a clogged filter accounted for only one of them. Short cycling … Read more