HVAC Replacement Cost Calculator

Plan an HVAC replacement budget using home size, system type, efficiency level and installation complexity.

What moves HVAC pricing?

Equipment capacity, efficiency rating, ductwork, electrical work, refrigerant lines, permits and local labor conditions can all affect installed cost.

2026 U.S. HVAC replacement benchmark

Angi reports that HVAC replacement commonly falls between about $5,000 and $22,000 in 2026, with an average around $7,500. A straightforward replacement can stay near the lower or middle part of the range, while new ductwork, higher-efficiency equipment, zoning, filtration, electrical upgrades, or other changes can push the project higher.

What the calculator considers

• Approximate conditioned home size
• System type, including central systems, heat pumps, mini-splits, and higher-efficiency equipment
• Whether the existing ductwork is usable
• A broad local-market adjustment

Ductless Mini-Splits: A Different Pricing Model

A ductless mini-split does not normally require new forced-air ductwork, so the calculator ignores the ductwork dropdown when this option is selected. Instead of multiplying the central HVAC estimate, it displays Angi’s broad $2,000–$14,500 national installed range for ductless mini-split systems, adjusted only by the selected illustrative market factor. Source: Angi, updated August 3, 2026.

The number of indoor heads / zones, capacity, line-set runs, condensate drainage, equipment efficiency and electrical service are not modeled. A multi-zone installation can approach or exceed the upper end; the low end can represent a much smaller system. The floor-area field does not determine a ductless estimate. Get a zone-by-zone written contractor quote and professional heating/cooling load calculation before selecting a system.

Central and Heat-Pump Models: What Is Assumed?

Central air / furnace and heat-pump estimates use a simplified house-size planning formula with additional illustrative factors for system type, local cost level and any selected ductwork allowance. These factors are not live ZIP-code costs, a Manual J calculation, or a contractor quote. The high-efficiency category is a generic scenario, not a particular equipment specification; ask contractors for model numbers, efficiency ratings and complete installed scopes.

Why square footage is only a starting point

A properly sized HVAC system is not selected from square footage alone. Climate zone, insulation, windows, air leakage, ceiling height, orientation, occupancy, and duct condition all affect heating and cooling load. A contractor may use a Manual J load calculation or another accepted sizing method before choosing equipment.

Potential extras to budget for

Permits, new thermostats, condensate drainage, electrical upgrades, refrigerant lines, duct repairs, insulation, zoning, filtration, equipment pads, crane access, and old-system removal can all change the installed price.

How to use the result

Treat the result as a pre-quote planning range. Compare several local proposals and check that each contractor is quoting comparable system capacity, efficiency, warranty, duct scope, permits, and controls.

Reference: Angi — HVAC Replacement Cost, 2026.

HVAC replacement cost FAQ

Does a bigger home always need a bigger HVAC system?

Usually, but not by square footage alone. Insulation, windows, air leakage, climate and duct condition affect the heating and cooling load.

Does replacing ductwork change the budget?

Yes. Major duct replacement can add several thousand dollars and can turn a simple equipment swap into a larger project.

Related HVAC guides: HVAC Cost for a 1,800 Sq Ft House · HVAC Cost for a 2,000 Sq Ft House · Attic Insulation Cost for 1,500 Sq Ft