HCLHVAC Cost Lab

Calculators / Project cost

Updated Jul 26, 2026 · Method and source links reviewed

Project cost

HVAC Replacement Cost Calculator

Create an independent replacement-cost baseline before you collect bids. The range responds to capacity, equipment type, tier, installation complexity, and duct scope.

Your planning inputsUpdates automatically
Select the primary system being replaced.
tons
Use the proposed equipment size, not a guess from square footage.
Efficiency and feature tier, not a specific brand.
Access, line-set routing, code upgrades, and labor difficulty.
Select only work included in this project.

Estimated result

$11,928–$16,756

Midpoint planning allowance: $14,200. Includes a permit/electrical allowance and a 16–18% uncertainty band.

How to use this estimate

  • Use the range to screen bids, not to set a contractor’s price.
  • Ask every bidder to separate equipment, labor, controls, permits, and ductwork.
  • A load calculation and commissioning plan matter more than matching the current equipment size.

Transparent method

We expose the planning formula so you can challenge it and replace assumptions with local evidence.

equipment baseline × capacity × tier + labor complexity + duct allowance + permits/electrical

What this calculator cannot see

  • Regional labor, rebates, brand pricing, refrigerant transitions, structural work, and electrical service upgrades can move a real quote outside the range.
  • This tool does not replace ACCA Manual J/S/D design or a site inspection.

Professional verification

Use this result to prepare questions and compare scenarios. Final equipment selection, electrical work, refrigerant work, combustion, duct design, and permitting should be handled by qualified professionals following local codes and manufacturer instructions.