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

If your home heater is not working, start with a few safe checks and call a licensed HVAC technician if it still won’t run. Most no-heat issues trace to control settings, power interruptions, or restricted airflow, and a quick look can save time before a repair visit. We service all makes and models, and our team is ready to address HVAC emergencies quickly. We also serve the Oro Valley area with rapid response on heating repairs. If the blower runs but the air is cold, the furnace’s safety limit may be open, which a professional should diagnose.

Try these simple steps first:

• Set the thermostat to Heat, raise the setpoint, and replace its batteries.
• Check the furnace switch and the breaker; reset once if tripped.
• Inspect or replace a clogged air filter.
• If you smell gas, leave immediately and contact your utility before calling an HVAC company.

If nothing changes after these checks, schedule a diagnostic so a technician can test ignitors, sensors, and controls safely. <br/> Updated: 2026-04-06 <br/> Need help in Oro Valley, AZ? Call 520-200-5869 or book online.