Heat & Air Costs

HVAC cost calculator

Last updated October 2026

Get a quick, realistic price range for a new air conditioner, furnace, heat pump, mini split or full HVAC system, based on your home size, climate, efficiency and ductwork.

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    See the detailed price guide

    Estimates use national installed price ranges from published cost guides (HomeGuide, 2025–2026). Local prices, brands and your home's needs will change the final quote.

    How the calculator works

    • Central AC and heat pumps: we estimate the size (tons) from your square footage and climate, then use national installed price ranges by size.
    • Furnaces: we use installed ranges by efficiency (80%, 90–95% and 96%+ AFUE) and adjust for home size.
    • Furnace + AC: we use the common $3 to $6 per square foot range.
    • Ductwork: we add $25 to $55 per linear foot to replace ducts, or $40 to $65 for new ducts, with an estimated duct length for your home.
    • Efficiency: high and premium tiers add the typical price difference between standard, two-stage and variable-speed equipment.

    This is a planning estimate, not a quote. Prices vary by region, brand, access and code requirements. Always get at least three written quotes and ask for a load calculation.

    Price guides behind the calculator

    Sources