Ask Bob HVAC and Comfort Why is my furnace not turning on?
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Why is my furnace not turning on?

Check the thermostat to ensure it is set to heat and the temperature is above the room temp. Check if the pilot light or ignition system is working. Inspect the air filter and replace if dirty. Make sure the gas valve is open and the furnace switch is on. If it still will not start, call an HVAC technician.

Why It Matters

A furnace that will not turn on during cold weather is a serious comfort and safety concern, especially if pipes are at risk of freezing.

Related Questions

How old should my HVAC system be before replacing? What size HVAC system do I need for my home? Why is my AC not blowing cold air? How can I improve my indoor air quality? What is a smart thermostat and should I get one?

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