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, and what seconds, minutes and frequent cycles mean.
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In Maple Lake and on the acreage around it, a furnace repair call carries a $79 trip charge, waived when you approve the repair. You see the written flat-rate price before any work, and we take calls 7 days, 7am–9pm. Propane furnaces past the gas lines get the same pricing.
Around Maple Lake, furnace calls split two ways. In town, it's a gas furnace in the basement of an early-1900s house or a 1970s rambler, with the failures of age: igniters, flame sensors, inducers, a limit switch tripping on a clogged filter. Out on the acreage, it's more often a propane furnace, and propane brings its own problems. A tank running low can let the burners light and then lose flame. A furnace never properly converted from natural gas runs sooty and rough.
Farmhouses that heat with a wood stove have a different pattern. The furnace sits idle for weeks while the stove carries the house, then gets called on the night the fire burns down, and that's when a dusty flame sensor or a seized blower shows up. Older farmhouse basements can run damp, which rusts burners and flue pipe over the years. We look at both while we're there.
Updated September 23, 2026
Every furnace repair call in Maple Lake starts with a $79 trip charge, waived when you approve the repair, and a written price before any work. Same prices in Maple Lake as in every town we serve. National averages (HomeGuide, 2026), not our prices: a PSC blower motor $500–$1,400, a variable-speed (ECM) blower motor $800–$2,300, an igniter $100–$250. More in the furnace repair cost guide.

More detail on our furnace repair page.
Symptom guides: Blowing cold air · Won't ignite · Short cycling · Blinking light codes · Pressure switch trips · Strange noises · Leaking water · Burning smell · Red tag · Carbon monoxide
Not right away. After a propane tank runs dry, the lines need a leak test before anything is relit, because a valve left open during the outage can release gas once the tank is refilled. Your propane supplier usually does that test at the refill. Once the system checks out, we can come look at the furnace if it still won't light, since air in the line or a locked-out control can keep it down.
Yes, and maybe more than a furnace that runs daily. Idle furnaces collect dust on the flame sensor and burners, mice move into the cabinet, and on a high-efficiency model the condensate trap can dry out and let flue gas escape through it. A fall check before the first cold night catches most of that. Our furnace tune-up is $129, and it includes cleaning the flame sensor and flushing the condensate trap.
A furnace that turns on and off too often tells you what's wrong by how long it runs. How to time a cycle, and what seconds, minutes and frequent cycles mean.
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Read the guideA red tag means a technician or the gas utility found your furnace unsafe and shut it off. Common reasons, what not to do, and how to get a second opinion.
Read the guideFurnace repair in Maple Lake? Call or send a request.