Replacing a furnace in Centennial means sizing for a 3°F winter design temperature, venting correctly at 5,722 feet, and pulling the right permit. We quote flat-rate, and the price we quote is the price you pay.
Licensed & insured • Family-owned since 2004 • Flat-rate pricing
✓ Upfront flat-rate pricing✓ Centennial permits handled✓ Carrier, Lennox & Trane✓ All major brands serviced
Furnace Replacement
Furnace Replacement for Centennial homes
Replacing a furnace in Centennial means sizing for a 3°F winter design temperature, venting correctly at 5,722 feet, and pulling the right permit. We quote flat-rate, and the price we quote is the price you pay.
You get a flat price in writing before any work, and we will tell you plainly when a repair is not worth doing.
See our main furnace replacement page for how we approach this work across the metro.
Furnace Replacement in Centennial: what’s different here
With a median home built in 1983, many Centennial houses still run on original ductwork while the furnace and AC are on their second or third replacement.
Altitude derate
Gas appliances are derated roughly 4% per 1,000 feet above 2,000 feet (the fuel gas code rule), so at 5,722 feet a furnace needs the correct orifices and manifold pressure to deliver its rating. We set it up for Centennial, not sea level.
Rebates in 2026
Xcel’s gas furnace rebates ended Jan. 1, 2026, and the federal 25C credit ended for anything installed after Dec. 31, 2025. If rebates matter, a cold-climate heat pump is where the money is.
Permit
Like-for-like AC, furnace and water heater swaps are One-Stop Permits through the city’s online portal, and the installer must hold a City of Centennial contractor license.
Hytek pricing
Furnace Replacement: $3,500 – $8,500 installed. Flat-rate, approved before work starts. Free estimates on replacements.
Elevation & climate
5,722 ft. Avg January low 19°F, avg July high 87.3°F, design temp 3°F, about 49 in of snow a year.
Homes
About half of Centennial’s homes (51.8%) were built in the 1970s and 1980s (median year built 1983).
Utilities
Electric: Xcel Energy for most homes; CORE Electric serves some addresses on the east edge. Gas: Xcel Energy.
Permits
City of Centennial Building Division. Like-for-like AC, furnace and water heater swaps are One-Stop Permits through the city’s online portal, and the installer must hold a City of Centennial contractor license.
Rebates and programs for Centennial homeowners (2026)
Arapahoe County Weatherization Assistance: Free efficiency work for income-qualified households, including furnace and water heater safety testing and furnace replacement where eligible (303-636-1982). Source
CORE Cool Credits: CORE Electric members with central AC or a heat pump earn bill credits for letting an eligible smart thermostat take part in summer demand events. Source
Power Ahead Colorado: $1,500 off a new ENERGY STAR cold-climate heat pump (ducted or ductless) in an existing home. Needs pre-approval through a Power Ahead-badged contractor before work starts; stacks with utility and state incentives. Source
Colorado heat pump tax credit: $1,000 for air-source systems in 2026, claimed by a registered contractor who must pass at least a third to you as an invoice discount.
Furnace Replacement in Centennial: common questions
How much does furnace replacement cost in Centennial?
Our published range is $3,500 – $8,500 installed. Every Hytek job is quoted flat-rate and approved before work begins, so the price you agree to is the price you pay. Replacements get free in-home estimates; see the full HVAC cost guide for the other services.
Do I need a permit for HVAC work in Centennial?
Repairs generally do not. Replacing or installing a furnace, AC, heat pump or water heater does. Permits for Centennial addresses go through City of Centennial Building Division. Like-for-like AC, furnace and water heater swaps are One-Stop Permits through the city’s online portal, and the installer must hold a City of Centennial contractor license. We pull the permit and schedule the inspection.
What HVAC rebates are available in Centennial in 2026?
For heat pumps: either Xcel’s heat pump rebate or CORE’s thermostat credits, depending on which utility serves the address; the $1,500 Power Ahead Colorado rebate (pre-approval required); Colorado’s $1,000 air-source heat pump credit, at least a third of which the installer must pass to you as a line-item discount. Xcel’s gas furnace rebates ended Jan. 1, 2026, and the federal 25C credit does not apply to 2026 installs.
How long do furnaces last in Centennial?
Typically 15–20 years here. With a median home built in 1983, many Centennial houses are on their second or third furnace. Age alone is not a reason to replace; a cracked heat exchanger, repeated repairs over about $1,000, or a unit under 80% AFUE is.
Who provides gas and electricity in Centennial?
Electric: Xcel Energy for most homes; CORE Electric serves some addresses on the east edge. Gas: Xcel Energy. That matters because rebates, operating costs and who you call about a gas leak all depend on the utility.
Does Hytek serve my part of Centennial?
Yes. We serve all of Centennial (ZIP 80112, 80122, 80016, 80015, 80121, 80111), including Willow Creek, Walnut Hills, Heritage Greens, Homestead, Piney Creek. Call (303) 627-3395 or request service online.
Local data: U.S. Census Bureau (2025 population estimates; ACS 2020–2024 housing age), NOAA 1991–2020 climate normals, and city, county and utility program pages, checked September 2026. Rebates change; we confirm eligibility on your address when we quote.
Centennial, CO
Need furnace replacement in Centennial?
Flat-rate pricing, approved before work starts. Family-owned in Centennial since 2004.
$100 furnace tune-up & safety checkup in Centennial
Before the first cold snap: our 20-point furnace checkup covers the heat exchanger, gas pressure, carbon monoxide output, igniter, flame sensor and filter, with a written report. Flat-rate, 60 to 90 minutes.
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New customers: get your furnace cleaned and checked for before the first cold snap. When it gets cold, everybody calls at once. Grab a spot now while the schedule is open.
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