Heating system repair in Sonoma County, CA

A heater blowing cold air is most often caused by a failed ignitor, a dirty flame sensor, or a tripped safety switch that shuts the burner off. A technician can test each component and confirm which part is at fault before any repair is made.

No, you should stop using the furnace and call for a repair check. Banging, rattling, or screeching sounds can point to a cracked heat exchanger, a failing blower motor, or loose components, any of which can worsen quickly or create a safety hazard.

Repair is usually the right call when the cost of fixing the problem is well below the cost of a new system and the unit is not at the end of its service life. If your furnace has needed multiple repairs recently or a single repair like a heat exchanger replacement approaches half the price of a new unit, replacement becomes worth comparing.

Your system type is the biggest factor: gas furnace repairs generally cost less than heat pump repairs because heat pumps run year-round and involve more components. The specific part that failed, the age of your system, and whether replacement parts are readily available all affect the final price as well.

Short cycling is often caused by a dirty air filter restricting airflow, a failing flame sensor, or an overheating issue that triggers the system's safety shutoff. A heating technician can run a full diagnostic to find the root cause and prevent the problem from repeating.

Yes, a working carbon monoxide detector is strongly recommended in any home with a gas furnace. A cracked heat exchanger can allow combustion gases to enter your living space without any visible sign, making a detector an important safety layer alongside regular furnace inspections.