How Much Does Furnace Installation Cost?

Average Furnace Installation Cost in the U.S.

Furnace installation pricing varies by market, but the following ranges are
useful for budgeting a residential replacement.

These figures are planning ranges rather than guaranteed market
prices. Local labor rates and the scope of work can make a large
difference.

Furnace Cost vs Furnace Installation Cost

One of the biggest mistakes homeowners make is looking only at the price of
the furnace itself.

A furnace may cost a few thousand dollars as equipment, but the installed
project can cost substantially more.

Always ask for an itemized estimate so you can see exactly what is included.

How Much Does a Gas Furnace Cost to Install?

Gas furnaces are among the most common central heating systems in the United
States. A straightforward gas furnace replacement can often fall in the
$3,500–$8,500 range depending on equipment and installation
complexity.

Basic single-stage models are generally less expensive than two-stage,
variable-speed, or modulating systems.

High-efficiency condensing furnaces can also require additional installation
work, including appropriate venting and condensate management.

How Much Does an 80% AFUE Furnace Cost?

An 80% AFUE furnace is generally a conventional non-condensing design.

Where permitted and appropriate, equipment and installation can sometimes
cost less than a comparable high-efficiency condensing system.

However, homeowners should not assume that an 80% furnace is automatically an
available option for a new installation. Federal and regional efficiency
requirements can affect which furnaces may legally be installed.

Check current requirements with a qualified HVAC contractor before selecting
an 80% furnace.

How Much Does a 90%–95% AFUE Furnace Cost?

High-efficiency furnaces in the 90%–95%+ AFUE range generally cost more than
basic conventional equipment.

A reasonable installed planning range is approximately
$5,000–$8,500+, although actual prices can be lower or
significantly higher depending on the project.

These systems may use condensing technology, which can require changes to
venting and condensate drainage.

How Much Does a 96%–98% AFUE Furnace Cost?

Premium high-efficiency furnaces can cost considerably more than basic
models.

Installed pricing can commonly reach $6,000–$10,000 or more
when premium equipment, advanced controls, variable-speed blowers, complex
installation, and other upgrades are involved.

The highest AFUE rating isn’t automatically the best financial choice.
Compare the additional installation cost with expected annual fuel savings.

Furnace Installation Cost by Efficiency

A higher AFUE furnace generally costs more upfront but can use less fuel
during operation. ENERGY STAR notes that certified furnaces can provide
meaningful energy savings compared with baseline equipment, with savings
varying between the northern and southern U.S. markets. 0

How Much Does Furnace Labor Cost?

Furnace installation labor varies significantly across the United States.
Labor tends to cost more in high-cost metropolitan areas and when the job
involves difficult access, extensive modifications, or additional HVAC work.

A straightforward replacement may require substantially less labor than a
new installation involving:

• New venting
• Gas-line modifications
• Electrical modifications
• New condensate drainage
• Ductwork changes
• New thermostat wiring
• Attic or crawl-space access
• Removal of obsolete equipment

Furnace Installation Cost by Furnace Type

Single-Stage Furnace

Single-stage furnaces are generally the least expensive gas furnace option.
They use a simple burner control that typically operates at one heating
output.

They can be appropriate for homeowners prioritizing lower upfront cost,
provided the furnace is correctly sized and installed.

Two-Stage Furnace

Two-stage furnaces generally cost more than single-stage models.

They can operate at a lower output for many heating cycles and increase
output when greater heating capacity is required.

The additional cost may be worthwhile for homeowners who value improved
temperature stability and comfort.

Variable-Speed Furnace

Variable-speed furnaces typically occupy the premium end of the market.

Their blower can operate across a range of speeds, allowing more gradual
airflow than a basic fixed-speed blower.

Installation costs are generally higher because of the equipment,
controls, and potentially more complex system setup.

Modulating Furnace

Modulating furnaces can adjust heating output in smaller increments than
conventional single-stage or two-stage equipment.

They are generally premium systems and can have substantially higher
equipment and installation costs.

Furnace Installation Cost by Home Size

Home size can influence furnace capacity, but it should not be used by itself
to determine furnace size.

A proper heating-load calculation is much more useful than choosing a
furnace based solely on square footage.

Does Furnace BTU Capacity Affect Installation Cost?

Yes, but capacity is only one part of the total price.

Larger-capacity equipment can cost more, but the difference is not always
proportional to BTU capacity.

Do not intentionally choose an oversized furnace simply because you believe
a larger furnace will heat the home faster.

Oversizing can increase cycling and may negatively affect comfort and
efficiency.

What Is Included in a Furnace Installation?

A professional furnace replacement may include some or all of the following:

• New furnace
• Removal of the existing furnace
• Equipment positioning
• Gas connection
• Electrical connection
• Supply and return-air connections
• Vent connection
• Condensate drainage when required
• Thermostat connection
• System testing
• Startup and commissioning
• Permit where required

The exact scope varies by contractor and installation.

Additional Furnace Installation Costs

Venting

Switching from a conventional furnace to a condensing high-efficiency
furnace can require different venting.

Condensate Drain

Condensing furnaces produce condensate and therefore require appropriate
drainage.

Ductwork

Damaged, undersized, poorly configured, or leaking ductwork can increase the
cost of a furnace replacement.

Gas Line

Gas-line modifications may be necessary depending on the equipment and
existing installation.

Electrical Work

Electrical modifications may add cost if the existing electrical setup does
not meet equipment requirements.

Thermostat

Advanced two-stage and variable-capacity systems may require compatible
thermostats and controls.

Permits

Local jurisdictions may require permits and inspections for furnace
replacement or gas-system work.

How Much Does Furnace Replacement Cost vs New Installation?

Replacing an existing furnace is usually less complicated than installing
heating equipment in a home that previously had no furnace.

How Much Does Furnace Installation Cost With Central AC?

If you are replacing both the furnace and central air conditioner, the total
project cost will be considerably higher than furnace replacement alone.

However, installing compatible equipment together can sometimes reduce
duplicated labor and make it easier to match the furnace, evaporator coil,
outdoor condenser, thermostat, and controls.

Ask the contractor to provide separate pricing for the furnace and air
conditioner so you can understand exactly what each component contributes to
the total project.

Why Does Furnace Installation Cost So Much?

A furnace isn’t simply an appliance that can be plugged in like a portable
heater.

A gas furnace involves combustion, fuel, exhaust, electrical power, airflow,
safety controls, and integration with the home’s duct system.

Professional installation therefore involves much more than placing the
furnace in position.

A properly installed system needs to be configured, tested, and commissioned
according to the equipment manufacturer’s requirements and applicable codes.

What Makes Furnace Installation More Expensive?

• High local labor costs
• Premium furnace brand or model
• Very high AFUE
• Two-stage or modulating operation
• Variable-speed blower
• Difficult attic or crawl-space access
• New venting
• Condensate drainage
• Gas-line modifications
• Electrical upgrades
• Ductwork repairs
• New thermostat
• Permit and inspection requirements
• Removal of difficult-to-access equipment
• Complete HVAC replacement

Furnace Installation Cost by Region

HVAC labor prices vary substantially across the United States.

These are broad regional tendencies, not fixed prices. Two homes in the same
city can receive very different quotes because installation conditions differ.

How to Get an Accurate Furnace Installation Quote

1. Get at least three written estimates.
   Compare the complete installed price.
2. Ask for the exact model number.
   This allows you to verify efficiency and equipment specifications.
3. Ask about furnace sizing.
   Request information about the heating-load calculation.
4. Ask what is included.
   Make sure removal, permits, venting, thermostat, startup, and disposal are
   clearly identified.
5. Ask about warranty.
   Separate equipment warranties from labor warranties.
6. Ask about rebates.
   Utility and state incentives can materially change the final cost.

How to Compare Two Furnace Quotes

How to Save Money on Furnace Installation

Get multiple quotes

Comparing several qualified contractors can help identify unusually high
prices and differences in installation scope.

Don’t automatically buy the most expensive furnace

A premium furnace can provide excellent performance, but the additional
efficiency or features may not produce enough savings to justify the price
for every home.

Compare AFUE payback

Calculate the expected fuel savings before paying a large premium for
additional efficiency.

Look for rebates

Utility and state programs can reduce the effective installation cost.
ENERGY STAR’s rebate database currently lists furnace incentives from
utilities around the country, including examples of furnace rebates ranging
from hundreds to more than $2,000 depending on location and eligibility.
1

Improve ductwork and air sealing

A high-efficiency furnace cannot compensate for major heat losses through
leaking ducts or an inefficient building envelope.

ENERGY STAR also recommends home sealing, insulation, and duct sealing as
ways to improve heating and cooling performance. 2

Are There Furnace Tax Credits or Rebates?

Incentives can change from year to year, so homeowners should verify current
eligibility before including an incentive in their budget.

ENERGY STAR maintains a rebate finder containing current utility and program
incentives. For example, its 2026 listings include furnace rebates from
utilities in multiple states. 3

Be particularly careful with older articles discussing federal furnace tax
credits. ENERGY STAR’s furnace tax-credit page states that the specific
federal credit described there applied to qualifying equipment purchased and
installed through December 31, 2025. Do not assume that
incentive is available for a 2026 installation. 4

For 2026 projects, check current federal rules, your state energy office,
utility company, and the ENERGY STAR rebate database before purchasing
equipment.

Should You Repair or Replace Your Furnace?

Furnace replacement isn’t always the cheapest solution.

If your furnace is relatively new and requires a minor repair, repairing it
may make more financial sense.

Replacement becomes more attractive when the furnace is old, repeatedly
breaking down, inefficient, unsafe, or facing a major repair.

Does Furnace Brand Affect Installation Cost?

Yes. Different manufacturers offer equipment at different price points.
Premium product lines often include advanced controls, higher efficiency,
variable-speed blowers, longer warranties, and other features.

However, the contractor and installation quality can be just as important as
the brand.

A properly sized and commissioned mid-range furnace can be a better choice
than an expensive premium furnace that is incorrectly sized or poorly
installed.

Is a High-Efficiency Furnace Worth the Extra Cost?

It depends on your heating demand and the installation premium.

High-efficiency furnaces use less fuel to deliver the same amount of useful
heat. ENERGY STAR states that certified furnaces are more efficient than
standard baseline models and highlights potential annual energy savings,
although the actual savings depend on the home and location. 5

The economic calculation is particularly favorable when:

• You live in a cold climate.
• Your furnace operates for many hours each winter.
• You use a substantial amount of natural gas.
• You expect to stay in the home for many years.
• The high-efficiency upgrade has a modest price premium.
• You qualify for a rebate.

Does Furnace Installation Cost More in a Cold Climate?

The climate itself doesn’t necessarily determine the installation labor
price, but cold-climate homes often require furnaces with greater heating
capacity and higher efficiency.

That can increase equipment costs.

Because heating demand is higher, however, the fuel savings from a
high-efficiency furnace can also be more valuable.

How Long Does Furnace Installation Take?

A straightforward furnace replacement can often be completed in a single
working day.

More complicated installations can take longer, especially when contractors
need to modify:

• Ductwork
• Venting
• Gas piping
• Electrical connections
• Condensate drainage
• Thermostat wiring

Ask your contractor how long your specific installation is expected to take
rather than relying on a generic installation time.

What Should a Furnace Installation Quote Include?

A professional quote should clearly identify the equipment and scope of
work.

• Manufacturer
• Exact model number
• AFUE rating
• Heating capacity
• Furnace type
• Labor
• Removal and disposal
• Venting
• Condensate work
• Gas and electrical connections
• Thermostat
• Permits
• Startup and commissioning
• Equipment warranty
• Labor warranty
• Total price

Red Flags in a Furnace Installation Quote

• No exact furnace model number
• No AFUE rating
• No heating capacity listed
• Very large price difference without explanation
• No description of included labor
• No mention of permits where required
• No warranty information
• Pressure to sign immediately
• No discussion of furnace sizing
• Recommendation based only on the size of the existing furnace

Furnace Installation Cost: Quick Budget Guide

These are budgeting ranges, not fixed national prices. Always compare local
written estimates.

How Much Should You Budget for a New Furnace?

For a typical U.S. homeowner replacing an existing gas furnace, a
$4,500–$7,500 budget is a reasonable starting point for
researching options.

A basic installation may cost less, while high-efficiency, two-stage,
variable-speed, modulating, or complicated installations can cost
considerably more.

If your contractor quotes significantly more than your initial budget, ask
for an itemized explanation rather than assuming the price is unreasonable.
A complicated venting or ductwork project can legitimately add thousands of
dollars.

Bottom Line

Furnace installation typically costs several thousand dollars in the
United States, with roughly $3,500–$8,500 being a useful planning range for
many residential gas-furnace replacements.

The actual price depends on the furnace’s efficiency and capacity, the
installation location, labor rates, venting, ductwork, gas and electrical
requirements, permits, thermostat, and other project-specific factors.

Don’t choose a furnace based solely on its equipment price or AFUE rating.
Compare the total installed cost, annual operating cost, warranty,
furnace sizing, and contractor quality.

Before signing a contract, obtain multiple detailed quotes and check current
utility and state incentives. ENERGY STAR maintains a rebate finder with
location-specific programs, which can help identify available incentives.
6

Frequently Asked Questions

How much does it cost to install a furnace?

A typical U.S. furnace replacement can cost roughly $3,500–$8,500 installed,
with premium or complicated projects exceeding $10,000.

How much does a new gas furnace cost?

Equipment prices vary considerably. Once labor, permits, venting, disposal,
accessories, and other installation requirements are included, the total
project can be several thousand dollars higher than the furnace’s equipment
price.

How much does a 95% AFUE furnace cost installed?

A 95% AFUE furnace installation can commonly fall around $5,000–$8,500,
although actual pricing depends heavily on location and installation
complexity.

How much does a high-efficiency furnace cost?

High-efficiency furnace installations commonly cost more than basic
replacements. Premium equipment and complicated installations can exceed
$8,000–$10,000.

Does furnace installation include labor?

A complete installation quote normally includes labor, but always verify
exactly what the contractor includes.

How much does furnace replacement labor cost?

Labor varies by location and project complexity. A simple replacement can
require substantially less labor than an installation involving new venting,
ductwork, gas piping, or electrical modifications.

Can I install a furnace myself?

Furnace installation involves combustion, gas, electrical, venting, and
safety requirements. It should be performed by a properly qualified
professional and in accordance with local requirements.

Is $10,000 too much for a furnace?

Not necessarily. A $10,000 quote can be expensive for a simple replacement,
but it may be reasonable for premium equipment combined with extensive
ductwork, venting, electrical, gas-line, or other modifications. Compare
several itemized quotes before deciding.

How many quotes should I get for a furnace?

Getting at least three detailed estimates is a good way to compare equipment,
installation scope, warranties, and local pricing.

Does a new furnace increase home value?

A new furnace can make a property more attractive to buyers, particularly
when the existing heating system is old or unreliable. However, homeowners
should not assume that the entire installation cost will be recovered at
resale.

Are there furnace rebates in 2026?

Yes, some utilities and regional programs currently offer furnace incentives,
but eligibility varies by location and equipment. ENERGY STAR’s rebate
database contains current examples, including 2026 furnace rebates.
7

Should I buy an 80% or 95% furnace?

Compare local installation requirements, upfront cost, expected heating
demand, fuel prices, and available incentives. A 95% furnace uses less fuel,
but the additional installation cost may not have the same payback in every
home.

Related Furnace Guides

• Best Gas Furnaces for Homes
• Best Two-Stage Gas Furnaces
• Best Variable-Speed Gas Furnaces
• Best Single-Stage Gas Furnaces
• Best Gas Furnaces for Cold Climates
• Best Gas Furnaces Under $2,000
• Best Gas Furnaces for Older Homes
• Single-Stage vs Two-Stage Furnace
• Two-Stage vs Variable-Speed Furnace
• 80% vs 90%+ AFUE Furnace
• High-Efficiency vs Standard Furnace
• What Is AFUE? What AFUE Rating Do I Need?
• Gas Furnace vs Heat Pump
• Gas Furnace vs Electric Furnace
• Furnace vs Boiler

Sources

• 
  ENERGY STAR — Furnaces
  
• 
  ENERGY STAR — Rebate Finder
  
• 
  ENERGY STAR — Federal Tax Credits