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

Common heater failures usually come from a bad thermostat setting or batteries, a tripped breaker, a clogged air filter, a dirty flame sensor or faulty igniter, blocked vents or returns, low refrigerant on heat pumps, or a tripped safety switch. Annual tune-ups help prevent these issues. We service Indianapolis, Fishers, and Carmel with 24/7 emergency help.

Quick checks:

• Set thermostat to Heat, fan Auto, and replace batteries.
• Check furnace switch and breaker.
• Replace a dirty filter.
• Ensure vents/returns are open.

Updated: 2025-12-21

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