Furnace Short Cycling: Time the Cycle, Then Find the Cause
A furnace that turns on and off too often tells you what's wrong by how long it runs. How to time a cycle, what it means, and when to call 612-429-3465.
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Furnace calls in Savage start with a $79 trip charge, waived once you approve the repair. Many Savage furnaces date from the building boom that followed the Bloomington Ferry Bridge in 1996, and finished basements often hide a condensate pump.
Savage more than doubled in the 1990s, so the typical furnace call is a two-story, split-entry or townhome from the late 1980s through the 2000s, with a condensing furnace on its original or second round. The parts that fail are the usual ones for that age: igniters, flame sensors, inducer motors, pressure switches and the condensate trap. Finished basements hide the furnace behind a wall, often with a condensate pump because the floor drain is across the room, and a stuck pump shuts the furnace down through its float switch.
Townhomes put the furnace in a closet or a small utility room with the water heater, where service room is tight and the filter slot is easy to forget. The hilly lots near the Minnesota River bluffs and the Credit River cause their own trouble in winter: on the uphill side of a house, PVC terminations can sit close to the ground and get buried by a heavy snowfall. Natural gas throughout Savage is CenterPoint Energy's.
Updated November 10, 2026
National averages (HomeGuide, 2026), not our prices: a control board $300–$650, an inducer motor $400–$1,100, a PSC blower motor $500–$1,400. More in the furnace repair cost guide.
Symptom guides: Pressure switch trips · Strange noises · Leaking water · Burning smell · Signs your furnace needs a technician
Yes, as long as we can get the door off or open fully and reach the front panels. Closet furnaces need either enough combustion air through the door or ducts, or sealed combustion with PVC to the outside, and a crowded closet can starve an 80% unit. Keep storage out of that space. The filter is often in a return grille or a slot on the furnace itself, and in a closet it's easy to overlook until airflow drops.
The PVC intake or exhaust is probably getting buried. Where the ground rises toward the house, the pipes can end up only a foot or so above grade, and drifting snow covers them. The furnace senses the blockage through its pressure switch and shuts down. Gently clear snow and frost from both pipes, then restart. If it happens every winter, the termination can be raised with a manufacturer-approved kit or moved to a better wall.
A furnace that turns on and off too often tells you what's wrong by how long it runs. How to time a cycle, what it means, and when to call 612-429-3465.
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