US calculator
Central AC Replacement Cost Calculator
Estimate cooling-focused US central air-conditioning replacement costs by home size, system capacity, efficiency, and installation scope.
How this estimate is calculated
System capacity supplies the installed central-AC project allowance, while home area adds only a modest sizing component around a normal residential project. The complete project range is not multiplied by area. Efficiency adjusts the installed subtotal; installation, duct modifications, and selected upgrades remain fixed project allowances.
This is a planning estimate, not a contractor quote. Actual contractor quotes vary by location, specification, site conditions, labour, and project requirements.
Useful cost information
Planning assumptions
- This estimates cooling-focused central AC, not furnace or complete HVAC replacement.
- Full duct replacement is excluded.
- Professional equipment sizing should use a proper load calculation; area alone is not a Manual J assessment.
Data sources & methodology
Current Angi 2026 central AC installation and replacement cost guidance
Last reviewed: 2026-09
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