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HVAC Replacement Cost in Colorado (2026)

HVAC replacement in Colorado typically runs $9,300–$21,000 for a complete 3-ton system replacement, with natural-gas furnaces with central AC as the dominant heating choice and roughly 5,600 heating degree days against 800 cooling degree days driving the seasonal load mix. Front Range elevation (5,000-7,500 ft) imposes a 6-8% combustion derate per 1,000 feet on every gas furnace — high-altitude orifice kits are required, and evaporative coolers (swamp coolers) remain widely installed in Denver-metro single-family homes where summer dewpoints rarely exceed 50°F.

State Colorado
Cities Covered 21
Typical complete 3-ton system replacement $9,300 – $21,000
BLS HVAC mechanic wage $30.06/hr

Colorado climate & load drivers

  • IECC climate zone: 5B-6B-7
  • Annual load split: Heating-dominant — annual heating load exceeds cooling load (5,600 HDD / 800 CDD)
  • Dominant heating fuel: Natural gas — piped utility supply through state pipeline network
  • Dominant cooling system: Central air conditioning paired with separate heating equipment

Colorado licensing & permits

  • License status: Statewide registration required (no exam)
  • License board: No statewide HVAC license — Denver, Colorado Springs, Boulder, Aurora require local registration with separate journeyperson exams (official site)
  • Permit: city mechanical permit required separately by municipality

How HVAC replacement costs vary in Colorado

State-specific code or insurance rule: Colorado Senate Bill 22-051 created a state income tax credit of up to $1,500 for residential heat pump installation — stackable with Xcel Energy and Black Hills Energy utility rebates and the federal IRA HEEHRA, making CO one of the most aggressively HP-incentivized states in the Mountain West.

Cities in Colorado

Compare HVAC replacement pricing for 21 cities across Colorado.

Arvada, CO

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Aurora, CO

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Boulder, CO

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Broomfield, CO

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Castle Rock, CO

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Centennial, CO

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Colorado Springs, CO

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Commerce City, CO

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Denver, CO

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Fort Collins, CO

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Grand Junction, CO

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Greeley, CO

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Lakewood, CO

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Littleton, CO

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Longmont, CO

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Loveland, CO

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Northglenn, CO

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Parker, CO

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Pueblo, CO

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Thornton, CO

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Westminster, CO

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More state guides

Pricing ranges reflect Colorado market labor (BLS OEWS HVAC mechanic mean $30.06/hr) and Woogoro regional cost modeling. For the most localized estimate, see your nearest city page above.