New AC unit installation: 2026 cost guide
The national average for a full central air conditioning replacement ranges from $5,000 to $12,500. Modern high-efficiency systems can reduce monthly cooling bills by 30–50%.
By system size
Average cost by tonnage
AC size is measured in tons of cooling capacity. A professional load calculation (Manual J) determines the right size for your home.
| Unit size | Home square footage | Estimated installed cost |
|---|---|---|
| 1.5–2.0 tons | 600–1,200 sq. ft. | $4,800–$6,500 |
| 2.5–3.0 tons | 1,200–1,800 sq. ft. | $6,000–$9,000 |
| 3.5–4.0 tons | 1,800–2,400 sq. ft. | $8,500–$11,500 |
| 5.0 tons | 2,400+ sq. ft. | $10,000–$14,000+ |
Square footage is an estimate — insulation quality and local climate significantly affect tonnage requirements.
Equipment tiers
AC brand tiers & pricing
Tier 1: Premium
Lennox, Carrier, Trane
Top-of-the-line reliability, advanced communicating tech, and whisper-quiet operation.
Tier 2: Mid-range
Rheem, Bryant, American Standard
The sweet spot of reliability and price. Excellent warranties and standard efficiency.
Tier 3: Economy
Goodman, York, Payne
Budget-friendly options with high parts availability, sometimes noisier operation.
Turnkey pricing
What’s included in a professional quote?
When comparing estimates, look for turnkey pricing. A professional HVAC installation isn’t just a unit drop-off — it involves engineering and safety compliance.
- Removal and disposal of old unit
- New evaporator coil and condenser
- Copper lineset and drain line updates
- Necessary electrical whip & disconnect
- Local building permits & mechanical inspection
Savings opportunity
2026 federal tax credits (25C)
Under the Inflation Reduction Act, homeowners can claim a tax credit of 30% of project cost (up to $2,000/year) for high-efficiency heat pumps, or $600 for high-efficiency central AC units.
Verify your chosen unit meets CEE Highest Efficiency Tier requirements to qualify for the full credit.
Price factors
Factors that can increase the price
Ductwork repair
Adding a new unit to leaky ducts wastes money. Repairs can add $1,500–$4,000.
Smart thermostats
Communicating thermostats required for variable-speed units: $300–$600.
Hard-to-reach locations
Attic or rooftop installs requiring cranes or extra labor: +$500–$1,500.
Indoor air quality
Whole-home air purifiers or UV lights: +$800–$1,800.
Need a local quote?
Connect with verified HVAC installers to get a realistic price for your specific home and cooling needs.