How much does AC replacement cost in 2026?

Cost by system type

• Central AC (condenser plus indoor coil): $5,500 to $12,000. Keeps your existing furnace or air handler as the blower.
• Heat pump: $7,000 to $16,000. Same outdoor unit form factor, but it heats too. Cold-climate models that hold capacity below zero sit at the top of the range.
• AC plus gas furnace: $9,000 to $20,000. The right move when the furnace is also past 15 years, because you pay one labor charge and get a matched system.
• Ductless mini-split: $4,000 to $6,000 for a single zone, $9,000 to $14,000 for three or four zones. Good for additions and homes without ducts.
• Rooftop package unit: $7,000 to $14,000. Common in Arizona and the Southwest; crane fees add $300 to $800.

Cost by home size

Air conditioners are sized in tons (12,000 BTU per ton). Rough 2026 installed ranges for a central AC:

• 1.5 to 2 tons (under 1,200 sq ft): $4,500 to $8,000
• 2.5 to 3 tons (1,200 to 2,000 sq ft): $6,000 to $11,000
• 3.5 to 4 tons (2,000 to 2,600 sq ft): $7,500 to $13,000
• 5 tons (2,600 sq ft and up): $9,000 to $15,000 or more

Square footage is only a starting point. Insulation, windows, ceiling height, and climate matter, which is why a good installer runs a Manual J load calculation instead of matching the old unit's size.

What drives the price up or down

• Efficiency. The federal minimum is 13.4 SEER2 in northern states and 14.3 SEER2 in the South and Southwest. Mid-tier 16 to 18 SEER2 systems add $1,000 to $3,000. Variable-speed systems above 20 SEER2 add $3,000 to $6,000 and are quietest and most comfortable.
• Refrigerant transition. Since 2025, new residential systems use A2L refrigerants (R-454B or R-32). Equipment prices rose roughly 10 to 20 percent as a result, and the indoor coil must match the new refrigerant, so a "condenser-only" swap is rarely possible.
• Ductwork. Sealing and minor repairs run $1,000 to $3,000; replacing a full duct system is $5,000 to $12,000. Leaky ducts can waste a quarter of what you paid for efficiency.
• Electrical. A new disconnect and whip is $200 to $500. A panel upgrade, if needed, is $1,500 to $4,000.
• Line set and pad: $500 to $1,500 if the copper lines need replacing or the pad is sinking.
• Permit and disposal: $100 to $500. Any quote without a permit is a red flag.
• Season and region. Spring and fall installs are cheaper than July. Labor is highest on the coasts and lowest in the Southeast and Southwest.

Rebates and incentives in 2026

Incentives in 2026 come from utilities and states rather than the federal tax code. Electric and gas utilities commonly offer $200 to $2,000 for high-efficiency equipment, with the largest amounts for heat pumps. Many states also run home energy rebate programs with income-based amounts, and manufacturers run seasonal rebates of $200 to $1,000. Ask each installer to itemize which programs apply to your address and who files the paperwork.

Repair or replace?

Replace when the system is 12 to 15 years old and needs a repair over about $1,000, when it uses R-22, or when the compressor or coil fails out of warranty. Multiply the unit's age by the repair quote: over $5,000, replace. If the furnace is also old, replace both at once. If the system is under ten years and the fix is a capacitor, motor, or board, repair it.

Questions to ask an installer

• Will you do a Manual J load calculation, and can I see it?
• What are the exact model numbers, SEER2 rating, and refrigerant, and is the indoor and outdoor pairing AHRI certified?
• What is included: permit, disposal, pad, thermostat, line set flush or replacement, duct inspection?
• What is the parts warranty (10 years registered is standard) and the labor warranty (1 to 2 years, with extended options)?
• Which rebates apply, and do you file them?
• If financing, what is the rate, and is there a dealer fee baked into the price? Ask for the cash price too.