Repair symptoms before they become no-heat calls
Changes in furnace operation can provide useful information for diagnosis. Note what the system does before and after the thermostat calls for heat.
Common warning signs
- The furnace starts but shuts off quickly.
- Airflow is weaker than usual.
- The system makes a new or persistent noise.
Urgent safety signs
- You smell gas near the equipment.
- You smell burning or see smoke.
- A carbon monoxide alarm sounds.
How a service call goes
Call
Describe the heating problem and provide the service address.
Schedule
Discuss available service options for your Colorado location.
Inspect
A technician examines the furnace and checks system operation.
Repair
After diagnosis, the needed repair work can be discussed.
Have these details ready when you call
- Your complete service address
- Whether the furnace has no heat, weak heat, or unusual noise
- The thermostat setting and indoor temperature
- Any error code or flashing-light pattern you observed
Discuss your furnace symptoms and Colorado location when you call.
(858) 293-9400
Tell us your town and what is happening.

