Project cost
HVAC Replacement Cost Calculator
Build a planning range for equipment, labor, permits, and project complexity.
Open calculator →Independent HVAC planning tools
Know the numbers before the contractor arrives.
Free calculators for replacement cost, system size, efficiency savings, and monthly operating cost—built for U.S. homeowners.
No email required. Assumptions are shown with every result.
PROJECT SNAPSHOTREADY
2,100 sq ft · mixed climate
Planning range$8,900–$14,600
- Equipment
- $5,100–$8,200
- Labor & commissioning
- $2,600–$4,400
- Electrical / permits
- $700–$1,200
- Contingency
- $500–$800
Planning estimate—not a contractor quote
12transparent calculators
U.S.climate-aware assumptions
2026methodology reviewed
0lead forms or sales calls
Start with a decision
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System sizing
Air Conditioner BTU Calculator
Estimate a preliminary cooling load from area, ceiling height, climate, insulation, and sun exposure.
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Furnace Size Calculator
Estimate a preliminary furnace output and input rating for a U.S. climate zone.
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Heat Pump Size Calculator
Estimate nominal heat-pump tonnage and flag when cold-climate verification matters.
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Heat Pump vs. Gas Cost Calculator
Compare annual heating cost using your utility rates, heat demand, COP, and furnace efficiency.
Open calculator →Efficiency
SEER2 Savings Calculator
Estimate cooling-energy savings when moving from an older efficiency to a newer SEER2 rating.
Open calculator →A calmer way to buy HVAC
Turn three contractor bids into one comparable decision.
A low quote is not automatically a good quote. Compare load assumptions, equipment efficiency, included electrical work, permit scope, warranty, and commissioning—not just the total.
Use the quote checklist- 01Size the project
Estimate capacity and challenge oversized proposals.
- 02Model ownership cost
Compare purchase price with annual energy cost.
- 03Verify the scope
Confirm permits, electrical work, controls, and commissioning.
Plain-English field notes
Guides for your next HVAC decision
Buying guide
How to Compare HVAC Quotes Without Getting Lost
A line-by-line framework for turning three different proposals into an apples-to-apples decision.
Read guide →Cost guide
What Actually Drives HVAC Replacement Cost?
Understand equipment, labor, access, code, duct, and commissioning costs before reading a bid.
Read guide →System sizing
How to Tell If an Air Conditioner Is the Right Size
Use load, runtime, humidity, airflow, and contractor documentation to challenge oversizing.
Read guide →Heating choice
Heat Pump vs. Gas Furnace: A Homeowner’s Decision Model
Compare fuel cost, cold-weather performance, electrical scope, comfort, and long-term risk.
Read guide →Before you sign