What goes into a replacement price
A replacement quote is equipment plus labor, and the biggest drivers are the system type, the tonnage your home size calls for, and the efficiency tier (SEER2 for cooling, AFUE for gas furnaces, HSPF2 for heat pump heating). A standard installation includes removing and hauling away the old system, permits, a basic thermostat, the refrigerant line set, electrical hookup, and startup. Major ductwork repairs, an electrical panel upgrade, or a premium smart thermostat add to the total.
| System type | Typical 2026 installed range |
|---|---|
| AC only (condenser + coil) | $4,000 - $8,000 |
| Furnace only | $3,500 - $7,500 |
| Full system (AC + furnace) | $7,000 - $16,000 |
| Heat pump system | $8,000 - $18,000 |
National planning ranges for a typical home; larger homes and premium equipment run higher.
Efficiency tiers and rebates
Higher-efficiency equipment costs more upfront but lowers operating cost over the system's life. Cooling efficiency is rated in SEER2, gas heating in AFUE, and heat pump heating in HSPF2. One timing note for 2026: the federal 25C tax credit expired December 31, 2025, but many state and utility rebates - including local programs for qualifying high-efficiency heat pumps - still apply. Equipment usually has to meet minimums like 16 SEER2 or 95 percent AFUE to qualify.
Replace or repair? If a repair costs more than half a new system, or age times repair cost tops $5,000, replacement usually wins. Run the numbers with the Repair Cost Estimator and the Repair vs Replace tool before deciding.
HVAC Replacement Cost Questions, Answered
How much does it cost to replace an HVAC system in 2026?
A full HVAC replacement (AC plus furnace) runs roughly $7,000 to $16,000 installed in 2026, with a national average near $9,800 for a typical 2,000 sq ft home. AC-only replacement is about $4,000 to $8,000, a furnace alone $3,500 to $7,500, and a heat pump system $8,000 to $18,000. Home size, efficiency tier, and ductwork condition move the number the most.
How much is a new AC unit versus a full system?
Replacing just the air conditioner (condenser and coil) typically costs $4,000 to $8,000, while a full system that also swaps the furnace or air handler runs $7,000 to $16,000. If both are more than 10 to 15 years old, replacing them together usually saves $1,500 to $3,000 in labor and keeps the system matched.
How much does a heat pump cost to install?
A ducted air-source heat pump system generally costs $8,000 to $18,000 installed in 2026, higher than a comparable AC because it handles both heating and cooling. Operating costs are often 35 to 45 percent lower than gas heat, and many utility rebates still apply in 2026 even though the federal 25C tax credit expired at the end of 2025.
Does home size change HVAC replacement cost?
Yes. Larger homes need higher tonnage and larger furnaces, which raises both equipment and labor cost. A rough guide is one ton of cooling per 400 to 600 sq ft in a hot-dry climate, but the exact size should come from a Manual J load calculation, not square footage alone. The calculator above scales the estimate to your home size.
Are there rebates or tax credits for HVAC replacement in 2026?
The federal 25C tax credit expired December 31, 2025, but many state and utility rebates remain in 2026, including local programs for qualifying high-efficiency heat pumps and systems. Equipment usually has to meet minimum ratings, such as 16 SEER2 for AC and heat pumps or 95 percent AFUE for gas furnaces, to qualify. Keep every receipt and the ENERGY STAR certification.
Is it cheaper to replace the AC and furnace together?
Usually yes, if both are aging. Bundling shares the labor and one service visit, typically saving $1,500 to $3,000 versus two separate jobs, and matched equipment runs more efficiently. If only one unit is failing and the other is under 10 years old, replacing just the failed unit can make more sense.
Get an Exact Replacement Quote.
We size the system with a real load calculation and give you a flat-rate, written proposal across efficiency tiers - no pressure, no obligation.