What Should I Do If My Heater Is Not Working in My House?

If your home heater is not working, start with simple checks and call a professional if heat doesn’t return. The most common cause is a thermostat setting issue or a tripped breaker, while clogged filters and safety lockouts are also frequent. Loss of heat is usually fixable, but persistent electrical trips, burning smells, or gas odors need urgent attention. Professional help is available 24/7 for true emergencies. Our technicians serve homes throughout the Lebanon area every day.

Try these quick, safe steps before requesting service:

• Set the thermostat to Heat and above room temperature; replace batteries if needed.
• Verify the furnace/air handler switch is on and reset a tripped breaker once.
• Replace a clogged air filter and make sure returns and supply vents are open.
• If you smell gas, leave immediately and call your utility; otherwise note any error codes and call a pro.

If these steps do not restore heat, schedule a diagnostic to prevent further damage. <br/> Updated: 2026-04-06 <br/> Need help in Lebanon, IN? Call (317) 765-1855 or book online.