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 Colorado Springs 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 Colorado Springs
Spotting the early warning signs lets you act before the problem gets expensive. Here are the most common indicators that it's time to call a professional:
- Squeals, scrapes, or grinding noises behind the blower door
- Booming or banging at light-off from delayed ignition
- Soot, rust, or moisture near the furnace cabinet or vent pipe
- Frequent on-off cycling that never reaches the thermostat setting
- The blower runs constantly but the air never warms
- A pilot or burner flame that is lazy yellow instead of crisp blue
- Clicking and a glowing igniter with no burner flame
- Flames that start, last a few seconds, and go out again and again
Early Action Saves Money
What seems like a minor issue today can take out a compressor or heat exchanger tomorrow. Call (719) 697-8646 at the first sign of trouble.
