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 Titusville 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.
Signs You Need Furnace Repair in Titusville
Spotting the early warning signs lets you act before the problem gets expensive. Keep an eye out for the following clues:
- A furnace that shuts off every few minutes before the house warms up
- Booming or banging at light-off from delayed ignition
- Grinding or high-pitched squeals from the blower
- The furnace clicks and glows but the burners never light
- Air moving through the vents that never gets warm
- Water, rust stains, or black soot around the flue or cabinet
- Burners light, run a few seconds, then shut down repeatedly
- A pilot or burner flame that is lazy yellow instead of crisp blue
Act Before It Gets Worse
Most HVAC failures start small, a weak capacitor, a squealing blower, a system that runs a little longer each week. If you notice any of these signs, call (321) 538-7520 for a prompt inspection.
