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. Most of the diagnosis comes down to finding the broken link. In Lakeland 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.
When to Call for Furnace Repair in Lakeland
Recognizing the warning signs early can save you time and money. These are the signals our technicians see most often:
- Clicking and a glowing igniter with no burner flame
- Yellow, wavering burner flames where they should be sharp blue
- Booming or banging at light-off from delayed ignition
- A furnace that shuts off every few minutes before the house warms up
- Squeals, scrapes, or grinding noises behind the blower door
- Soot, rust, or moisture near the furnace cabinet or vent pipe
- A fan that keeps running while the registers blow cool air
- Burners light, run a few seconds, then shut down repeatedly
Early Action Saves Money
What seems like a minor issue today can take out a compressor or heat exchanger tomorrow. If you notice any of these signs, call (863) 201-4329 for a prompt inspection.
