From the hallway, a furnace that will not heat looks the same no matter what broke. Inside the cabinet, though, everything happens in a strict order: inducer on, pressure switch closed, igniter glowing, gas valve open, burners lit, flame proven, and finally the blower sending heat through the house. Most of the diagnosis comes down to finding the broken link. In Indio homes, it tends to be the same handful of culprits: a flame sensor coated in oxide, a hot surface igniter cracked by thermal cycling, a pressure switch held open by a tired inducer or a plugged condensate trap, or a control board with a burned relay.
When the AC quits in summer, see AC Repair.
Warning Signs for Furnace Repair
Spotting the early warning signs lets you act before the problem gets expensive. Keep an eye out for the following clues:
- Squealing or grinding from the blower compartment
- A pilot or burner flame that is lazy yellow instead of crisp blue
- The blower runs constantly but the air never warms
- Short cycling every few minutes without reaching the setpoint
- Soot, rust, or moisture near the furnace cabinet or vent pipe
- Burners light, run a few seconds, then shut down repeatedly
- The furnace clicks and glows but the burners never light
- Booming or banging at light-off from delayed ignition
Early Action Saves Money
Left unchecked, even a small fault or temperature swing often signals a system working its way toward a breakdown. Call (760) 205-5185 at the first sign of trouble.
