The furnace starts, runs for two to five minutes, shuts off, waits, and starts again. The house never gets warm and the gas bill climbs. Every start-up is the hardest moment for the ignitor, the blower and the heat exchanger, so a short cycling furnace is wearing itself out.
A dirty flame sensor that cannot prove the flame is lit, so the control board shuts the gas off. A clogged filter causing the limit switch to trip on high temperature. A blocked flue or failed pressure switch. A thermostat mounted near a heat source. And in a surprising number of South Carolina homes, a furnace that is simply too big for the house.
Our winters are mild, so a furnace sized for a Michigan house will satisfy the thermostat in minutes and shut down before the air has circulated. The fix is not a repair; it is proper sizing at replacement time.
Start with the filter. If it is clean and the furnace still cycles, schedule furnace repair. Flame sensor cleaning and limit switch replacement are quick jobs, and we check the heat exchanger on every visit.
Same-day AC and heating repair anywhere in South Carolina. Flat-rate pricing, 24/7 emergency dispatch.
Request serviceSame-day service, flat-rate pricing, and technicians who show up when they say they will.
Call (855) 459-5498