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

Most no-heat issues come from a few basics: wrong thermostat settings, tripped breakers, a clogged filter stopping airflow, ignition or flame-sensor faults, or a failed blower motor or safety control. We service furnaces, heat pumps, and boilers across Denver, Golden, and nearby.

Quick checks:

• Set the thermostat to Heat and raise the setpoint.
• Replace a dirty filter.
• Verify the furnace switch and breaker are on.
• Open return and supply vents.
• If you smell gas, leave and call your utility.

Updated: 2025-12-12

Need help in Golden, CO? Call 303-536-1616 or book online.