Updated 11 April 2026

Central AC Installation Cost in 2026: $3,500 to $7,500

Replacing an existing system on existing ductwork. New installations with ductwork: $7,000 to $15,000+. Use our free calculator below for a personalized estimate.

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Estimated tonnage: 3 ton

Estimated Total Cost

$4,208 to $5,693

The federal 25C tax credit ended for systems placed in service after 31 December 2025. State and utility rebates may still lower your net cost.

Equipment

$2,380 to $3,220

Labor

$1,530 to $2,070

Permits + Other

$298 to $402

Standard System

$3,500 to $5,500

14 to 16 SEER2, existing ductwork, 2 to 3 ton unit

High-Efficiency

$5,000 to $8,500

17 to 20 SEER2, variable speed, smart thermostat included

New Install + Ductwork

$7,000 to $15,000+

Includes $4,000 to $8,000 for new ductwork installation

What You Are Paying For

ComponentTypical Range% of Total
AC unit (equipment)$1,500 to $4,50040% to 55%
Labor (installation)$1,200 to $3,00025% to 35%
Ductwork (if needed)$4,000 to $8,000varies
Permits and inspection$200 to $5003% to 7%
Thermostat (if upgrading)$150 to $4002% to 5%
Miscellaneous (line set, pad, disconnect)$200 to $6003% to 8%

Cost by Home Size

Based on a standard efficiency split system with existing ductwork. See full sizing guide

Home SizeTonnageEquipmentTotal Installed
1,000 sq ft1.5 to 2 ton$1,500 to $2,500$3,000 to $4,500
1,500 sq ft2 to 2.5 ton$2,000 to $3,200$3,500 to $5,500
2,000 sq ft3 to 3.5 ton$2,500 to $3,800$4,000 to $6,500
2,500 sq ft3.5 to 4 ton$3,000 to $4,500$5,000 to $7,500
3,000+ sq ft4 to 5 ton$3,500 to $5,500$6,000 to $9,500

System Types at a Glance

Central Split

$3,500 to $7,500

Most common. Outdoor condenser + indoor evaporator coil. Requires ductwork.

Heat Pump

$4,000 to $9,000

Heats and cools. State and utility rebates still apply. Best in moderate climates.

Mini Split

$2,000 to $5,000/zone

No ductwork needed. Zone control. Higher SEER ratings. Wall-mounted units.

Package Unit

$3,800 to $7,000

All-in-one outdoor unit. Common in warm climates. Smaller footprint.

SEER Efficiency Tiers

Higher SEER means lower utility bills but higher upfront cost. Full SEER2 guide

14 to 16 SEER2

Standard efficiency (minimum legal requirement)

Cost premium: Baseline

Annual savings: Baseline

17 to 20 SEER2

High efficiency (best value for most homeowners)

Cost premium: +$800 to $2,000

Annual savings: $150 to $300/yr

21+ SEER2

Premium (variable-speed, inverter-driven)

Cost premium: +$2,500 to $5,000

Annual savings: $250 to $450/yr

New Installation vs Replacement

Replacement (Existing Ducts)

$3,500 to $7,500

  • Remove old outdoor and indoor units
  • Install new condenser and evaporator coil
  • Connect to existing ductwork and electrical
  • Typically completed in 4 to 8 hours

New Installation (No Ducts)

$7,000 to $15,000+

  • Design and install complete duct system
  • Electrical work and new breaker panel space
  • Possible drywall and insulation work
  • Typically takes 2 to 5 days
See ductwork costs in detail →

Tax Credits and Rebates

The federal 25C credit ended for systems placed in service after 31 December 2025. State and utility rebates still cut your net cost. See all ways to save

IncentiveAmountRequirements
Federal 25C (standard AC)Ended 31 Dec 2025Not available for 2026 installs (OBBBA)
Federal 25C (heat pump)Ended 31 Dec 2025Not available for 2026 installs (OBBBA)
Utility rebates$200 to $1,000Varies by utility. Check dsireusa.org
State incentives$200 to $2,000Varies. MA, NY, CA, CO have strongest programs

Frequently Asked Questions

How much does central AC installation cost in 2026?
A standard central AC replacement on existing ductwork costs $3,500 to $7,500. New installations that require ductwork run $7,000 to $15,000 or more. The main cost drivers are system size (tonnage), efficiency rating (SEER2), brand choice, ductwork condition, and your local labor market.
How long does central AC installation take?
A straightforward replacement of an existing system typically takes 4 to 8 hours and is completed in a single day. If new ductwork is needed, expect 2 to 3 days. Complex installations involving structural changes, electrical upgrades, or multi-zone systems can take 3 to 5 days.
Does central air add value to a home?
Yes. Homes with central air conditioning sell for 5% to 10% more than comparable homes without it, and they tend to sell faster. In hot-climate states like Texas, Florida, and Arizona, central AC is considered essential by most buyers. Industry estimates suggest you recoup 50% to 75% of the installation cost at resale.
What size central AC do I need?
As a general rule, you need about 1 ton of cooling capacity per 500 to 600 square feet. A 2,000 sq ft home typically needs a 3 to 3.5 ton system. However, the accurate way to size is with a Manual J load calculation that accounts for climate, insulation, windows, and home orientation. Oversized systems cause humidity problems and short cycling.
Can I install central air without existing ductwork?
Yes, but it adds $4,000 to $8,000 for new ductwork. Alternatively, ductless mini-split systems can cool your entire home without ducts for $6,000 to $10,000 (multi-zone). Mini splits are often more efficient and, as heat pumps, may still qualify for state and utility rebates. See our ductwork cost page for a detailed comparison.
Should I repair or replace my AC?
Use the 50% rule: if the repair costs more than 50% of a new system, replace it. Systems over 15 years old, those using R-22 refrigerant, or units needing frequent repairs are almost always better replaced. A new system can reduce cooling costs by 30% to 40% compared to a 20-year-old unit.
What SEER rating should I buy?
The federal minimum is 13.4 SEER2 in northern states and 14.3 SEER2 in southern states (equivalent to 14 and 15 on the older SEER scale). For most homeowners, a 16 to 18 SEER2 system offers the best balance of upfront cost and energy savings. Premium 20+ SEER2 systems make financial sense primarily in hot climates where you run AC 6 or more months per year.
Is a heat pump better than central AC?
Heat pumps cost 15% to 25% more upfront but provide both cooling and heating, which can eliminate the need for a separate furnace. The federal 25C tax credit that favored them (up to $2,000 versus $600 for AC) ended for systems placed in service after 31 December 2025, but state and utility heat pump rebates remain generous in many states. In moderate climates, a heat pump is often the smarter long-term investment.

Related Cost Guides

Mini Split Installation Cost ↗

Considering ductless? Compare mini split costs, efficiency ratings, and find out if going ductless makes sense for your home.

AC Compressor Replacement Cost ↗

Compressor failing? See whether replacing just the compressor or the entire system is the better financial decision.

Updated 2026-04-27