HVAC Replacement Cost Calculator
Furnace or AC on its last legs? Estimate the installed cost to replace it by system type, home size and efficiency.
Example: with What you’re replacing Full system: AC + furnace (~$10,000) · Home size 2000 sq ft → Estimated installed cost: $10,000.
- Typical low$8,000
- Typical high$12,500
Computed by the calculator below using its default values. Change any input to see your own numbers.
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Learn moreAverage HVAC replacement cost: what moves the price
HVAC replacement cost depends on what you’re replacing (a single unit vs a full system), the capacity your home needs, and the efficiency tier you choose. High-efficiency equipment costs more upfront but lowers running costs and may qualify for rebates.
How it’s calculated & sources
We start from a typical installed price for the system type, scale it for home size, and apply an efficiency multiplier. The low/high range reflects normal regional and contractor variation.
Benchmark: a full HVAC system averages roughly $7,000–12,000 installed; a single AC or furnace runs about $4,000–7,000 (HomeAdvisor / Angi, 2025).
Results update as you type and are general estimates, not personalized financial, tax, medical or legal advice. Verify with a professional.
Frequently asked questions
Should I repair or replace?
If the unit is over ~12–15 years old and a repair costs more than a third of replacement, replacing is usually wiser — newer units are also far more efficient.
Are rebates available?
Often — high-efficiency heat pumps and AC can qualify for federal tax credits and utility rebates, cutting the net cost. Check current programs before buying.