HVAC Cost Calculator & Replacement Guides

What a new heating and cooling system costs in 2026 — heat pump, AC & gas furnace, or ductless mini-split, sized Manual-J-style from your square footage and climate. A free calculator that shows the sizing math (BTUs, tons, zones) with a full cost breakdown — plus guides grouped by topic.

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Calculators

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HVAC Cost Calculator
Estimate HVAC replacement cost by system type — heat pump, AC + furnace, or ductless mini-split — sized Manual-J-style from your square footage, climate, and ductwork.

HVAC guides

HVAC in 2026 — Life After the Tax Credit

What changed when the federal 25C credit (30% up to $2,000 for heat pumps) expired on December 31, 2025 — and how to buy heating and cooling in 2026.

HVAC Costs & Pricing

What HVAC replacement costs in 2026 by system type, size, and efficiency tier — with the sizing math shown.

System Comparisons

Heat pump vs. furnace + AC vs. ductless mini-split — cost, efficiency, and which homes each one fits.

Sizing & How HVAC Works

Tonnage, BTUs, SEER2, and AFUE in plain English — how systems get sized and what the ratings mean.

HVAC DATA UPDATED JULY 10, 2026