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

The most common causes are thermostat issues, dirty burners or coils, a clogged filter, tripped safety controls, or a failing blower. Loose electrical connections can stop heat. Heat pumps may struggle from low refrigerant or restricted airflow. Worn parts and skipped maintenance are frequent culprits. We service furnaces, boilers, heat pumps, and mini‑splits in Naperville and nearby.

Quick checks:

• Set thermostat to Heat and raise 3–5°F
• Replace a dirty filter
• Open supply/return vents
• Clear debris around outdoor heat pump unit

Updated: 2025-12-21

Need help in Warrenville, IL? Call (331) 294-8731 or book online.