What Are Common Reasons My Heater Is Not Working in My House?

Most no-heat calls come from simple issues: incorrect thermostat settings or dead batteries, a dirty air filter, a tripped breaker, or a blown fuse. Ignition or flame-sensor problems can stop gas furnaces. Blocked vents or closed dampers reduce airflow. Heat pumps may shut down from an iced-over outdoor unit or low airflow. Safety switches can also cut power if panels are loose or condensate backs up in the drain. This applies to homes around Noblesville and Fishers.

Quick checks:

• Set thermostat to Heat and replace batteries.
• Replace the filter.
• Check the breaker and furnace switch.
• Ensure gas valve is on and vents are clear.

Updated: 2025-12-20

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