Furnace Won't Ignite: Find Where the Startup Stops
Furnace clicking but not lighting? Follow a technician's startup sequence, from power and inducer to igniter, gas and flame sensor, then call 612-429-3465.
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Falcon Heights furnace repair starts with a $79 trip charge, waived when you say yes, including 1920s houses with old chimneys. Houses near Snelling and Larpenteur date from the 1920s and often vent into old chimneys, so we test draft on those; the postwar blocks have ordinary igniter and sensor failures.
Falcon Heights furnace calls split by neighborhood. In the oldest houses, the 1920s blocks near Snelling and Larpenteur, the furnace may still vent into a masonry chimney that has worked for decades and is now crumbling or partly blocked inside. That shows up as flame rollout, a water heater spilling at its draft hood, or a CO alarm, which is why we test the draft on those calls. Some of these houses heat with a boiler instead, where circulators, zone valves and air in the radiators are the usual complaints.
The postwar blocks northeast of the intersection mostly have second- or third-generation furnaces that fail the ordinary ways: igniters, flame sensors, inducer motors and pressure switches. In University Grove each house was designed on its own, so the diagnosis starts with finding where the furnace, flue and returns actually are. Xcel Energy supplies the gas, and a no-heat call gets priority.
Updated November 10, 2026
National averages (HomeGuide, 2026), not our prices: a flame sensor $80–$250, a pressure switch $150–$400, a limit switch $100–$375. More in the furnace repair cost guide.
Symptom guides: Strange noises · Leaking water · Burning smell · Red tag · Signs your furnace needs a technician
Usually. On a hot-water boiler, cold upstairs radiators most often mean air trapped at the top of the system or pressure too low to lift water to the second floor. Bleeding the radiators and checking the fill valve and expansion tank fixes most cases; a weak circulator or a stuck zone valve covers the rest. You get a written price first.
Usually not. Wind pushes cold air in through the rim joist, old windows and gaps around the chimney on the side it hits, and those rooms lose heat faster than their supply registers can make it up. We check the furnace's temperature rise, filter and blower first, then the dampers and supply runs to those rooms. If the equipment tests fine, air sealing on the windward side does more than any furnace adjustment.
Furnace clicking but not lighting? Follow a technician's startup sequence, from power and inducer to igniter, gas and flame sensor, then call 612-429-3465.
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