Furnace Repair in Louisville

At around 5,400 feet, furnaces here need high-altitude derating to burn cleanly. A replacement gas valve or burner set to sea-level specifications can over-fire, causing sooting, rollout trips or high CO readings. We check manifold pressure and temperature rise after every gas-side repair.

December 30, 2021 showed how strong winter winds get here. NCAR measured gusts up to 112 mph that day. Even ordinary windstorms can disrupt side-wall venting on high-efficiency furnaces and cause pressure-switch lockouts, so we inspect terminations and the vent's pitch and supports when that's the symptom.

Every visit starts with the furnace's fault history and a full ignition-sequence check. We then measure combustion and ambient CO, gas pressure, temperature rise and static pressure, and inspect the heat exchanger, flame sensor and condensate trap. For newer communicating systems, we check the control setup before replacing any parts, since a configuration error can look like a hardware failure.

Pricing is flat-rate and given in advance, with no overtime fees, and the diagnostic is free if you go ahead with the repair. We work on Trane, Lennox, Carrier, Goodman, Bryant, Rheem and other major brands, and we're available 24/7 for no-heat calls.

The city issues a single Furnace/AC/Water Heater/Heat Pump permit, and it has to be pulled by a contractor licensed for mechanical work. Every permit requires a final inspection. High-efficiency gas appliances also need a 15-minute gas pressure test, done in person or on video, and direct-vent units get their exhaust vent checked for leaks.

Xcel Energy supplies both gas and electricity here. The city promotes heat pumps as its main alternative to gas heat, and Xcel offers rebates on heat pump systems. Boulder County's EnergySmart rebates are limited to income-qualified households in 2026, though free energy advising is still available to every homeowner.

For rebuild-era equipment that's only a few years old, repair is almost always the answer, and the problem is often an installation detail rather than a defective part. For a 1990s furnace that needs a heat exchanger or an inducer and board at once, replacement deserves a serious look. We'll show you the readings and give you the repair price so you can compare it against what a new system would involve.