Furnace Won't Ignite: Find Where the Startup Stops
Furnace clicking but not lighting? Follow the startup sequence a technician uses: thermostat, power, inducer, pressure switch, igniter, gas and flame sensor.
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We repair natural gas and propane furnaces in Andover, including LP units on rural lots past the gas mains. The $79 trip charge comes off the bill when you approve the repair, and the flat-rate price is in writing before we pick up a tool. Hours run 7am–9pm, seven days a week.
Andover furnace calls split two ways. In the 1980s and 90s split-entries, the furnace is often on its second round, and the failures fit its age: a tired blower motor, a cracked igniter, or a limit switch tripping because the filter is packed. In houses from the 2000s on, the furnace is a condensing model vented in PVC, and plenty of no-heat calls trace to the vent or the condensate drain rather than the burner. A drain line run along a cold rim joist can freeze solid in a cold snap and shut the furnace off.
The acreage adds propane. A propane furnace uses the same igniters, sensors and boards as a gas one, but when the tank runs dry the supplier typically leak-checks the system before gas is restored, and air in the line can take several ignition tries to clear.
Updated September 23, 2026
Every furnace repair call in Andover starts with a $79 trip charge, waived when you approve the repair, and a written price before any work. Same prices in Andover as in every town we serve. 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.

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
Call your propane supplier first. After a tank runs out, the supplier typically has to test the system for leaks before gas is restored, and the furnace may need a few ignition attempts while air clears the line. If it still won't light once propane is back, call us. We check gas pressure at the valve, since propane runs at a different pressure than natural gas and a wrong setting keeps burners from lighting cleanly.
On condensing furnaces, the two PVC pipes and the condensate drain are the usual suspects in deep cold. Frost builds on the exhaust, drifting snow blocks the intake, or a drain line along a cold wall freezes and backs water into the furnace until a safety switch stops it. Check outside and clear snow from both pipes. If it keeps happening, the vent or drain routing needs correcting, and we quote that in writing.
Furnace clicking but not lighting? Follow the startup sequence a technician uses: thermostat, power, inducer, pressure switch, igniter, gas and flame sensor.
Read the guideSigns of a cracked furnace heat exchanger, how a technician confirms one, what to ask for if your furnace is red-tagged, and when to repair or replace it.
Read the guideYes. How a gas furnace leaks carbon monoxide, the symptoms MDH lists, Minnesota's CO alarm law, what to do when the alarm sounds and what a red tag means.
Read the guideFurnace repair in Andover? Call or send a request.