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

Common reasons your home heater won’t work in Dallas–Fort Worth include thermostat errors, a tripped breaker, a dirty filter, and safety lockouts. Furnaces can shut down from dirty burners or a failed flame/ignition sensor. Heat pumps can stop due to clogged condensate drains, bad capacitors, or compressor issues. Blower motor problems and loose wiring also cause no-heat calls. Milestone’s Tune-Up includes thermostat testing, burner cleaning, blower cleaning, drain checks, and electrical testing to prevent these issues.

Quick checks:

• Set thermostat to Heat and fan Auto.
• Replace a clogged filter.
• Check the furnace switch and breaker.
• Clear the condensate drain line.

Updated: 2025-12-11

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