From the hallway, a furnace that will not heat looks the same no matter what broke. Inside the cabinet, though, the sequence is strict: inducer on, pressure switch closed, igniter glowing, gas valve open, burners lit, flame proven, and finally the blower sending heat through the house. Diagnosis is mostly a matter of finding where that chain breaks. In Coral Gables 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.
For air conditioning breakdowns, see AC Repair.
When to Call for Furnace Repair in Coral Gables
Spotting the early warning signs lets you act before the problem gets expensive. These are the signals our technicians see most often:
- Squealing or grinding from the blower compartment
- The blower runs constantly but the air never warms
- Repeated shutdowns just seconds after the burners light
- Clicking and a glowing igniter with no burner flame
- Loud booms at startup caused by delayed ignition
- Rust streaks, soot, or water around the cabinet or flue
- Yellow, wavering burner flames where they should be sharp blue
- A furnace that shuts off every few minutes before the house warms up
Don't Wait for a Total Failure
Left unchecked, even a small fault or temperature swing often signals a system working its way toward a breakdown. At the first hint of a problem, call (645) 245-6099 for a fast inspection.
