How much does it cost to replace an HVAC system?

A full furnace and AC replacement typically runs about $6,000 to $13,000 installed. Equipment alone is roughly $3,000 to $7,000, but the refrigerant and gas work usually require a licensed pro.

Can I replace my own HVAC?

Most homeowners cannot. Refrigerant handling requires EPA certification, and gas and electrical connections are licensed work in most areas. This is a hire-it-out job.

How long does an HVAC system last?

A well-maintained furnace lasts 15 to 20 years and an AC condenser 12 to 17 years. If both are near end of life, replacing them together saves on labor.

Should I switch to a heat pump?

In many climates a heat pump can replace both the AC and furnace and qualify for federal rebates and tax credits. Ask for a load calculation and a cost comparison.

Do I need a permit to replace HVAC?

Almost always. Mechanical permits and inspections protect against gas, electrical, and venting hazards, and skipping them can void warranties and complicate a sale.

PROJECT GUIDE · UPDATED JUNE 2026

HVAC Replacement Cost & Project Guide

Everything for your HVAC Replacement in one place: cost by state, DIY vs. hire, the tools and materials, and a local pro if you want one.

NATIONAL AVERAGE · UPDATED JUNE 2026

HIRE A PRO

$6,000–$13,000

DIY COST

$3,000–$7,000

Typical project: 2.5-ton central AC and a matching gas furnace, like-for-like replacement

Skill levelAdvancedAnyone can take this on. The Blueprint walks you through it, step by step.

Get the HVAC Replacement Blueprint →

Exact cost by zip →Tools & materials →Find a pro →

Source: 3+ benchmark aggregations (RSMeans, Angi, Fixr, HomeGuide) plus Submitted Quotes data

Plan your HVAC Replacement

A quick checklist to get from idea to done. Want it as a printable PDF? Grab the full free version, emailed to you.

1Set a realistic budget using the cost range above.
2Check whether your project needs a permit in your state.
3Decide DIY or hire (see the breakdown below).
4Make your materials and tools list.
5If hiring, get three quotes and compare them like-for-like.
6Plan the timeline and order materials with a 10 percent buffer.

Get the full free HVAC Replacement checklist, emailed as a PDF →

Tools and materials for a HVAC Replacement

What you will actually buy. We flag what to rent versus own so you do not overspend on a one-time tool.

Materials

Condenser and coil, 2.5 ton · 1 unit
Furnace, matching · 1 unit
Line set, whip, and fittings · 1 kit
Thermostat and pad · 1 set

Tools

HVAC gauges and vacuum pump · rent or buy
Refrigerant recovery equipment · rent or buy
Basic hand and electrical tools · you likely own

See all the tools and materials worth buying →

Pro tips for your HVAC Replacement

The mistakes that cost DIYers the most, and how to stay ahead of them.

Sizing the system by guesswork instead of a load calculation

Attempting refrigerant or gas work without a license

Reusing an undersized or leaky line set

Skipping the permit and inspection

Should you DIY or hire for HVAC Replacement?

It depends on three things: your skill level, your time, and your tolerance for the riskiest parts of the project.

When DIY makes sense

→You have trade-level experience or have completed this type of project before
→You own or can rent the specialized tools required
→You've read the local code requirements and understand the permit process
→A trusted helper with relevant experience is available for the critical phases

When to hire

→The project involves significant fall risk, high voltage, or gas lines
→Your jurisdiction requires a licensed contractor, no exceptions
→A DIY mistake could void your homeowner's insurance or mortgage terms
→You lack the specialized tools and can't justify renting them for a one-time job
→The project scope is large enough that crew efficiency outweighs DIY savings

DifficultyHard

Advanced, but within reach with the right prep. The Blueprint covers the safety-critical phases step by step, and a pro is there if you would rather not.

Not planning to DIY? Find a local HVAC Replacement pro →

What drives the cost of HVAC Replacement

Materials

The single biggest material variable is your product choice. AC only and Furnace only sit at opposite ends of the price spectrum, a decision that can shift your materials budget by 40–60%. Key line items include condenser and coil, 2.5 ton, furnace, matching, line set, whip, and fittings, each priced per unit and sensitive to regional supply-chain conditions. Bulk purchasing and timing your order outside peak season (spring and early summer) can reduce material costs by 10–15%.

Labor

BLS occupational wage data shows systems-trade crews earn $28–$52/hour depending on metro area, and most hvac replacement jobs require a two- to three-person crew for at least one full day. Labor typically accounts for 40–60% of the total project cost. Project complexity, custom details, tight access, or non-standard configurations, adds crew time and can push labor costs well above the national average.

Site conditions

Slope, soil type, and existing-structure condition are the three site factors contractors price most aggressively. Demolition or removal of old materials adds dumpster and disposal fees that rarely appear in online estimates. Local code requirements, permit fees, required inspections, and jurisdiction-specific material standards, can add $200–$1,500 to any project before a single tool is lifted.

Rather hire it out?

Find a vetted HVAC Replacement pro near you. We never sell your info and never take kickbacks.

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HVAC Replacement cost in your state

HVAC Replacement cost varies a lot by state. Open your state for locally calibrated hire and DIY numbers.

HVAC Replacement cost in Michigan →HVAC Replacement cost in California →HVAC Replacement cost in Texas →HVAC Replacement cost in Florida →HVAC Replacement cost in New York →HVAC Replacement cost in Pennsylvania →HVAC Replacement cost in Ohio →HVAC Replacement cost in Georgia →

See all home improvement costs by state →