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How much does hvac replacement cost?

Replacing an HVAC system costs $5,500 to $18,000 installed, averaging about $9,200. A central AC swap runs $4,000 to $9,000, a heat pump $5,500 to $12,000 and a gas furnace $3,500 to $7,500. Budget $1,800 to $2,800 per ton of cooling capacity.

National average

$9,200

Typical low

$5,500

Typical high

$18,000

Per ton of cooling capacity

$1,800 – $2,800

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3 tons

Estimated project cost

$4,200 $7,800

Most homeowners pay around $6,000

Compare system type

Cost by material

Installed pricing per ton of cooling capacity.

OptionInstalled cost
Central air conditioner$4,000 – $9,000
Gas furnace$3,500 – $7,500
Heat pump$5,500 – $12,000
Ductless mini-split$3,000 – $10,000
Geothermal$18,000 – $45,000

Where the money goes

A typical project budget, broken down by line item.

  • Equipment50% · $4,600
  • Labor & installation30% · $2,760
  • Ductwork & line set13% · $1,196
  • Permit, startup & disposal7% · $644

Cost by region

Labor markets move the number more than any other single factor.

Northeast metro

$6,600 – $21,600

+20% vs. national average

West Coast metro

$6,710 – $21,960

+22% vs. national average

Mountain West

$5,775 – $18,900

+5% vs. national average

Midwest

$5,500 – $18,000

At the national average

South & Southeast

$5,115 – $16,740

-7% vs. national average

Rural nationwide

$4,840 – $15,840

-12% vs. national average

Common add-ons

Line items that show up on most quotes but rarely in the headline price.

Full duct replacement

$2,000 – $6,000

Duct sealing & insulation

$700 – $2,500

Smart thermostat

$180 – $600

Whole-home air purifier

$600 – $2,500

Whole-home humidifier

$400 – $1,200

Electrical panel upgrade for heat pump

$1,500 – $4,000

Permit & inspection

$100 – $500

DIY vs. hiring a pro

Hire a pro

$5,500 – $18,000

Do it yourself

$0 – $0

Refrigerant handling requires EPA certification and self-installs void nearly every manufacturer warranty. This is a licensed-pro job.

Ways to save

Practical levers that lower the bill without cutting quality.

  • Replace in spring or fall — mid-summer emergency swaps carry a 10–20% premium.
  • Claim the 25C federal tax credit: up to $2,000 for a qualifying heat pump, $600 for AC or furnace.
  • Check your utility's rebate portal; many add $500–$1,500 on high-efficiency equipment.
  • Right-size with a Manual J load calculation — oversized systems cost more and short-cycle.
  • Don't over-buy SEER in mild climates; the payback can exceed the equipment's life.

Questions to ask your contractor

  1. 01Did you run a Manual J load calculation for my home?
  2. 02What SEER2/AFUE rating is the quoted equipment?
  3. 03Are the permit, startup, refrigerant and old-unit disposal included?
  4. 04What is covered by labor warranty versus manufacturer warranty?
  5. 05Which rebates and tax credits do you file paperwork for?

Frequently asked questions

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HVAC Replacement cost by city

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