Furnace Installation & Replacement in Parker

A furnace rated 100,000 Btu/h input at sea level runs at about 77,000 in Parker after its high-altitude conversion. That conversion includes the correct orifices, manifold pressure from the manufacturer's high-altitude table and, often, a high-altitude pressure switch. SWEEP has noted that some ultra-low NOx furnaces need a separate high-altitude kit, so we confirm it's in stock with the furnace.

We base the size on a Manual J. Two-story homes from the 2000s often have a single basement furnace serving three floors, and the upstairs bedrooms are usually the complaint. A two-stage or variable-speed furnace with longer run times, plus duct balancing, typically helps more than more capacity.

Many Stroh Ranch-era homes have 80% furnaces on a metal B-vent shared with the water heater. Since January 1, 2026, a new gas furnace must meet 14 ng/J NOx or the current ENERGY STAR version, which requires 97% AFUE as of July 31, 2026. An ultra-low NOx 80% model can reuse the B-vent. A 97% condensing furnace vents in PVC and needs a drain, and the water heater left on the B-vent needs it resized for a single appliance. We put both options on paper. In finished basements, we also plan where the condensate goes, which is usually a floor drain or a small pump to the laundry standpipe, so the drain doesn't end up running across a finished ceiling. More in our NOx guide.

For addresses within the town boundary, our permit goes to the Building Division at 20120 E. Mainstreet, and an inspection we request before 4 p.m. lands on the next business day. In Stonegate and The Pinery, the Douglas County Building Division issues a basic mechanical permit. We confirm jurisdiction by address before ordering equipment, since the two offices have different application steps and inspection scheduling.

Gas in town comes from Xcel Energy, and an outside rebate database lists Xcel's furnace rebates as discontinued from January 1, 2026. Electricity is mostly from CORE Electric Cooperative, so Xcel's heat pump rebates generally don't apply. Colorado's $1,000 air-source heat pump credit and Power Ahead Colorado's $1,500 cold-climate rebate do, regardless of utility.

If your AC is as old as your furnace, a dual-fuel system replaces both, with a compliant gas furnace covering the coldest nights. We'll quote it next to a straight furnace replacement.