Central AC plus gas furnace cost in 2026
A US-average central ac plus gas furnace HVAC replacement runs $6,600 to $13,200 installed in 2026, with typical jobs near $9,000. Full split system. The default replacement.
Estimate your cost
US national averageAdjust the variant and size. Numbers update live.
Most US homes need 2 to 5 tons. A Manual J load calc beats square-footage rules of thumb.
- Variant
- Central AC plus gas furnace
- Size
- 3 tons
- Region factor
- 1.00x
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How central ac plus gas furnace compares to other HVAC replacement options
| Variant | Low | Typical | High |
|---|---|---|---|
Central AC only Coil and condenser. Keeps the existing furnace. | $5,600 | $7,650 | $11,200 |
Central AC plus gas furnace Full split system. The default replacement. | $6,600 | $9,000 | $13,200 |
Air-source heat pump Replaces both AC and furnace. Federal tax credit may apply. | $7,600 | $10,350 | $15,200 |
Cold-climate heat pump Rated for sub-zero heating. Premium models. | $9,550 | $13,050 | $19,150 |
Geothermal heat pump Loop field plus indoor equipment. Lowest operating cost. | $29,700 | $40,500 | $59,400 |
What changes the price
System size and SEER2 rating
Upgrading from a 14 SEER2 baseline to a 17 SEER2 variable-speed system typically adds 1500 to 3000 dollars but cuts cooling bills 20 to 30 percent.
Ductwork condition
Crews charge separately if existing ducts leak more than 15 percent or are undersized for the new equipment. Aeroseal-style sealing runs 1500 to 3000 dollars.
Climate zone
Cold-climate heat pumps cost more but qualify for federal IRA rebates and state utility programs that knock 2000 to 8000 dollars off the sticker price.
Central AC plus gas furnace cost by state
Pick your state to see the central ac plus gas furnace range adjusted for local labor and permits.
- Central AC plus gas furnace in Alabama
- Central AC plus gas furnace in Alaska
- Central AC plus gas furnace in Arizona
- Central AC plus gas furnace in Arkansas
- Central AC plus gas furnace in California
- Central AC plus gas furnace in Colorado
- Central AC plus gas furnace in Connecticut
- Central AC plus gas furnace in Delaware
- Central AC plus gas furnace in Florida
- Central AC plus gas furnace in Georgia
- Central AC plus gas furnace in Hawaii
- Central AC plus gas furnace in Idaho
- Central AC plus gas furnace in Illinois
- Central AC plus gas furnace in Indiana
- Central AC plus gas furnace in Iowa
- Central AC plus gas furnace in Kansas
- Central AC plus gas furnace in Kentucky
- Central AC plus gas furnace in Louisiana
- Central AC plus gas furnace in Maine
- Central AC plus gas furnace in Maryland
- Central AC plus gas furnace in Massachusetts
- Central AC plus gas furnace in Michigan
- Central AC plus gas furnace in Minnesota
- Central AC plus gas furnace in Mississippi
- Central AC plus gas furnace in Missouri
- Central AC plus gas furnace in Montana
- Central AC plus gas furnace in Nebraska
- Central AC plus gas furnace in Nevada
- Central AC plus gas furnace in New Hampshire
- Central AC plus gas furnace in New Jersey
- Central AC plus gas furnace in New Mexico
- Central AC plus gas furnace in New York
- Central AC plus gas furnace in North Carolina
- Central AC plus gas furnace in North Dakota
- Central AC plus gas furnace in Ohio
- Central AC plus gas furnace in Oklahoma
- Central AC plus gas furnace in Oregon
- Central AC plus gas furnace in Pennsylvania
- Central AC plus gas furnace in Rhode Island
- Central AC plus gas furnace in South Carolina
- Central AC plus gas furnace in South Dakota
- Central AC plus gas furnace in Tennessee
- Central AC plus gas furnace in Texas
- Central AC plus gas furnace in Utah
- Central AC plus gas furnace in Vermont
- Central AC plus gas furnace in Virginia
- Central AC plus gas furnace in Washington
- Central AC plus gas furnace in West Virginia
- Central AC plus gas furnace in Wisconsin
- Central AC plus gas furnace in Wyoming
Other HVAC replacement variants
Frequently asked questions
How long does an HVAC replacement take?+
A standard split-system swap takes one full day. Heat pump conversions, ductwork add-ons, or panel upgrades extend the job to two or three days.
What size HVAC do I need?+
Plan for 20 to 25 BTU per square foot of conditioned space in most US climates. A 2000 sq ft home typically needs a 3 to 4 ton system. Get a Manual J load calculation before sizing.
Are there tax credits for HVAC replacement?+
The federal 25C credit covers up to 2000 dollars for qualifying heat pumps and 600 dollars for high-efficiency AC and furnaces through 2032. Many states stack additional rebates.
Is it cheaper to repair or replace HVAC?+
Replace if the unit is over 12 years old, the repair quote exceeds half the replacement cost, or the refrigerant is R-22 (no longer manufactured).
Can I finance an HVAC replacement?+
Most contractors offer 0 percent for 12 to 18 months through Synchrony or GreenSky. Manufacturer rebates often require financing through approved lenders.