How much does it cost to replace a gas furnace?

Most homeowners pay $4,000–$10,000 installed, within a broader range of about $2,800 to $12,000. A typical 1,600–2,000 sq ft home lands around $4,500–$7,000 for a standard unit. Efficiency (AFUE), size, and installation complexity are the main drivers.

Is a high-efficiency furnace worth the extra cost?

A 96%+ AFUE furnace costs more upfront but burns less gas; the payback depends on your climate and gas prices, and is faster in cold regions. High-efficiency models also need different (sealed) venting, which adds to the install cost.

How much is just the furnace unit?

The furnace itself runs roughly $700–$6,200 depending on size, brand, and efficiency; high-efficiency units alone are about $2,800–$6,200. The rest of the project is labor, venting, and permits.

Should I replace my furnace and AC at the same time?

If both are old, replacing them together is common — you pay one labor mobilization and the components stay matched. If only one has failed and the other is newer, replacing just the failed unit is usually fine.

Gas furnace replacement cost

Gas furnace replacement costs about $2,800 to $12,000, with a typical price around $6,300 (as of June 2026).

Replacing a residential gas furnace, unit plus installation.

Replacing a gas furnace for a 1,600–2,000 sq ft home typically runs about $4,000–$7,000 installed. Standard 80% AFUE units sit at the low end; high-efficiency (96%+ AFUE) models push toward $10,000–$12,000.

Low

$2,800

Typical

$6,300

High

$12,000

Estimate your gas furnace replacement

Adjust for your furnace and install. The estimate starts from our published range and narrows for your choices.

Your area

Adjusts the estimate to local cost levels. Pick a metro or leave on national.

Efficiency (AFUE)

AFUE is the share of fuel turned into heat. Higher = lower bills, higher price.

Furnace size

Installation

Estimated cost for your options

$2,800 – $12,000

Typical: $6,300

How we got this

Starts from our published gas furnace replacement range of $2,800–$12,000, adjusted for:

Efficiency (AFUE): Standard (80% AFUE)×1
Furnace size: Average (60k–80k BTU · ~1,600–2,000 sq ft)×1
Installation: Straight swap (same location)×1

These figures are planning estimates compiled from public cost data on the dates shown — not quotes, bids, or guarantees. Real prices vary widely with your home, location, materials, permits, and contractor. Always get itemized written quotes from licensed local pros before budgeting or hiring.

Where the money goes

Furnace unit
About $700–$6,200 depending on size, brand, and efficiency.
≈ 35%–55%
Labor & installation
Removal, venting, gas/electrical connections, and permits.
≈ 45%–65%

What changes the price

Efficiency (AFUE) — Raises cost
96%+ AFUE units cost more and need different venting, but burn less gas.
Furnace size (BTU) — Raises cost
Bigger homes need higher heat output, which raises unit and labor cost.
Venting & gas line changes — Raises cost
Switching efficiency tiers or moving the unit can require new venting or gas work.
Brand & warranty — Raises cost
Premium brands and longer warranties cost more.
Rebates & tax credits — Lowers cost
High-efficiency furnaces may qualify for utility rebates or federal credits.

Get real quotes for your gas furnace replacement

Our ranges are for planning. The only way to know your real price is itemized quotes from licensed local pros — always get at least three before you hire.

Tip: search for licensed, insured gas furnace replacement contractors in your area, check reviews and references, and compare written itemized bids — not just bottom-line numbers.

Gas furnace replacement cost — FAQ

How much does it cost to replace a gas furnace?: Most homeowners pay $4,000–$10,000 installed, within a broader range of about $2,800 to $12,000. A typical 1,600–2,000 sq ft home lands around $4,500–$7,000 for a standard unit. Efficiency (AFUE), size, and installation complexity are the main drivers.
Is a high-efficiency furnace worth the extra cost?: A 96%+ AFUE furnace costs more upfront but burns less gas; the payback depends on your climate and gas prices, and is faster in cold regions. High-efficiency models also need different (sealed) venting, which adds to the install cost.
How much is just the furnace unit?: The furnace itself runs roughly $700–$6,200 depending on size, brand, and efficiency; high-efficiency units alone are about $2,800–$6,200. The rest of the project is labor, venting, and permits.
Should I replace my furnace and AC at the same time?: If both are old, replacing them together is common — you pay one labor mobilization and the components stay matched. If only one has failed and the other is newer, replacing just the failed unit is usually fine.

Gas furnace replacement cost by city

Costs vary by metro. See gas furnace replacement pricing adjusted to local levels:

Cost data compiled June 13, 2026.

Sources (4)

How Much Does a Gas Furnace Cost? (2026) — HomeGuide
How Much Does a Gas Furnace Cost? [2026 Data] — Angi
Furnace Replacement Cost 2026 — Fixr
Furnace Replacement Cost 2026 — HVAC Project Cost

Ranges synthesize several public 2026 cost guides into a low–typical–high band rather than reproducing any single source's table. Metro-level breakdowns are coming as we verify local data.

Related cost guides

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