Why Your Furnace Won't Turn On

Cool Talk with Hartzell's | Your HVAC Questions, Answered! · Jul 20, 2026 · 24m · transcript

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Your furnace will not turn on and the house is getting cold. Before you panic, I walk you through the checks you can safely do yourself: thermostat set to heat with fresh batteries, the furnace switch that looks like a light switch, the breaker, the front panel that has to click in tight, and the filter. Then I explain what needs a tech: the hot surface ignitor, flame sensor, gas valve, and control board, plus the one gas safety rule you never break. Call 405-375-4822 or book at hartzellsheatair.com. More episodes: https://hartzellsheatair.com/podcast/

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