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HVAC Replacement Cost Calculator

What a new heating and cooling system costs installed.

Your measurementsEvery assumption editable01

From the AC size calculator, or the existing nameplate.

Condenser, air handler or furnace, and coil.

$700–1,200 per ton is typical for a straight changeout.

Zero for a straight changeout onto sound existing ducts.

Permit, inspection, disconnect and any panel work.

1.00 is the national average. Best set by dividing a real local quote by this calculator's midpoint.

Estimated costCalculated live02

Result

$6765–11275estimated

Midpoint $9020 — about $3006.67 per ton

System size
3 ton
Materials
$4500
Labor33% of the subtotal
$2700
Removal and disposal
$400
Permits and electrical
$600
Subtotal
$8200
Contingency10%
$820
Midpoint estimate
$9020
Likely range±25%, the usual concept-stage spread
$6765 – $11275
Cost per ton
$3006.67

This is a budgeting figure, not a quote. Regional labor rates vary by a factor of two or more across the country, and the same job priced in a busy season and a quiet one can differ by a third. Get three local quotes before committing to anything.

The range matters more than the midpoint. Construction estimating works to roughly ±25% until a scope is drawn and priced, and a single confident number would be pretending to a precision that does not exist at this stage.

Labor is usually the larger half and the more variable half. If the figure looks wrong, the labor rate is almost always the input to revisit first — material prices are far more consistent between regions than crews are.

Priced by the ton, which is how equipment is sized and sold. Ductwork is a separate line because a straight changeout onto sound existing ducts and a full duct replacement are very different jobs.

Why use this tool?What it does differently03

Why use this tool?

Four equipment tiers

Builder-grade through cold-climate heat pump — a spread of more than two to one.

Ductwork separated

The single largest variable between a simple changeout and a full replacement.

Honest range

±25%, the conventional concept-stage spread.

Permits included

Permit, inspection, disconnect and any panel work — routinely omitted from quick quotes.

How this worksThe method04

How this hvac replacement cost calculator works

Equipment and installation labor are both rated per ton of cooling capacity, which is how systems are sized and how contractors price them. Use the AC size calculator if you do not have a tonnage figure.

Ductwork sits outside that per-ton rate because it does not scale with equipment size in the same way. A straight changeout onto sound ducts costs nothing here; undersized or leaking ducts can add several thousand.

Removal, disposal, permits and any electrical work are separate lines because they are fixed costs of the job rather than functions of system size.

How to use itStep by step05

How to use it

  1. Step 1: Find your system size

    In tons. The AC size calculator derives it from area and climate.

  2. Step 2: Pick an equipment tier

    Efficiency and staging drive most of the price difference.

  3. Step 3: Assess the ductwork

    Have it evaluated. New equipment on bad ducts underperforms from day one.

  4. Step 4: Get three quotes

    HVAC quotes vary more than almost any other trade.

Example usageWorked figures06

Example usage

A 3 ton mid-efficiency changeout
$4,500 equipment, $2,700 labor, $400 removal and $600 permits — about $9,020 midpoint, ranging $6,765 to $11,275. That is roughly $3,007 per ton.
High-efficiency equipment
Moving to a variable-speed system at $2,200 per ton takes the midpoint to about $11,330.
With ductwork
Adding $4,000 of duct replacement takes the same job to roughly $13,420 — which is why duct condition should be assessed before comparing quotes.
Frequently asked questionsCommon questions07

Frequently asked questions

How much does a new HVAC system cost?

Commonly $7,000 to $12,000 for a straightforward 3 ton changeout, and considerably more with high-efficiency equipment or ductwork replacement.

Why do HVAC quotes vary so much?

Equipment tier, ductwork scope and whether permits and electrical work are included. Two quotes for nominally the same job can differ by a factor of two on scope alone.

Is a high-efficiency system worth it?

It depends on your climate and electricity rate. Use the SEER savings calculator with the price difference from here to work out a real payback rather than accepting a sales figure.

Does new equipment need new ductwork?

Not always, but it should be assessed. Undersized or leaking ducts will throttle a new system, and that shows up as poor performance rather than an obvious fault.

Are permits really necessary?

In most jurisdictions yes, and a permitted install with an inspection is worth having. Unpermitted work causes problems at sale and can void equipment warranties.

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