Furnace Repair in Lone Tree

Heritage Hills sits around 5,900 feet, while the city's official elevation is about 6,280 feet. Either way, furnace manufacturers require input to be reduced about 4 percent per 1,000 feet above sea level, plus a high-altitude pressure switch above 4,000 feet. We verify the gas pressure, orifice sizing and pressure switch on every call, because an unconverted furnace can overfire, crack its heat exchanger early and make carbon monoxide.

First come the carbon monoxide test and combustion safety check. Next we read the fault history, measure manifold gas pressure and temperature rise, test the igniter, flame sensor and limit switches, and inspect the filter, blower, venting and drains. If you have zoning, we test each damper and the zone panel too.

We carry common parts for Trane, Lennox, Carrier, Goodman, Bryant and Rheem, and we quote a flat-rate price before starting. The diagnostic is free with an approved repair, and a 2 a.m. call is billed at the same rate as a weekday afternoon.

Repair makes sense for most single-part failures. Replacement deserves a look when the heat exchanger is cracked, when an 80 percent furnace from the 1990s needs another expensive part, or when one furnace in a two-system home fails and the other is the same age.

Replacement permits in Lone Tree go through the City of Lone Tree Building Division, which accepts applications only through its online portal and handles the inspections. Gas and electricity here both come from Xcel Energy. Xcel's recent Colorado rebate summaries have limited furnace rebates to units of 95 percent AFUE or higher that replace a non-condensing furnace, and some measures require a participating contractor. The rules change from year to year, so we confirm the current version before you choose equipment.