Furnace Repair in Thornton

We read fault codes, then test the igniter, flame sensor, pressure switches, limit switch and gas valve. We measure gas pressure and temperature rise to confirm the furnace is set up correctly for Thornton's roughly 5,200-foot elevation. A furnace that was not adjusted for altitude can burn rich, soot the heat exchanger and trip safeties.

We also run a carbon monoxide and combustion safety test on every furnace call. In older ranches where a water heater and furnace share a chimney or B-vent, we confirm both appliances draft properly with the blower running and doors closed. Our trucks are stocked for Trane, Lennox, Carrier, Goodman, Bryant and Rheem, and the diagnostic is free when you go ahead with the repair.

The city has many tri-level and split-level homes, including the tri-levels in Holly Point and split-levels in Grange Creek. In these layouts the lowest level stays cool while the top floor overheats or underheats. A furnace that seems weak is often fine; the problem is airflow distribution and return placement. We measure before replacing parts.

High-efficiency furnaces in newer homes drain condensate through plastic lines and a trap. When those lines run through a cold garage or near an exterior wall, they can freeze during a hard cold snap, and the furnace shuts down on a pressure-switch fault. Clearing and rerouting or insulating the drain usually fixes it.

Manufactured homes make up close to 5 percent of local housing. Those homes typically use downflow furnaces designed specifically for manufactured housing, and they need parts and venting that match. Tell us when you call so we bring the right parts.

On a furnace under about 15 years old with a sound heat exchanger, a repair is usually the right call. For early-2000s builder furnaces approaching 20 years, a single igniter or sensor is still worth fixing, but a failed control board plus inducer, or any heat exchanger crack, is a signal to price replacement. We give you both numbers and let you decide.

The City of Thornton requires a mechanical permit to replace or alter mechanical systems, and its permit list specifically names furnace and AC installation or replacement. Repairs do not require a permit.

Natural gas comes from Xcel Energy, while electricity comes from either Xcel Energy or United Power depending on your address. Your bill shows which. Rebates for high-efficiency equipment or heat pumps depend on which utility serves you, so we check that before quoting any replacement.