AC Installation Cost in 2026:
What Homeowners Actually Pay

AC Installation Cost at a Glance

For most US homeowners, a central air conditioning replacement lands between $3,500 and $8,000 installed. That range covers the most common scenario: replacing an existing outdoor condenser and indoor coil in a home that already has working ductwork.

A brand-new installation — where ductwork needs to be designed and run through the home — typically costs $6,000–$15,000, depending on house size and duct complexity. For homes without ducts, a ductless mini-split system is usually the more practical choice.

What Drives the Cost Up or Down

1. System Size (Tonnage)

AC systems are sized in tons of cooling capacity — 1 ton equals 12,000 BTU/hr. Most homes need 2–5 tons. A 2-ton unit costs less than a 4-ton, both in equipment and refrigerant. Proper sizing requires a Manual J load calculation — a contractor who quotes without measuring your home is guessing.

2. Efficiency Rating (SEER2)

SEER2 measures seasonal cooling efficiency. The federal minimum for new equipment is 14.3 SEER2 in most regions (higher in the South). High-efficiency units (18–26 SEER2) cost $1,000–$2,500 more upfront but reduce monthly energy bills — often enough to recover the difference within 5–8 years. Many utilities offer rebates on 16+ SEER2 units.

3. Ductwork Condition

If your ducts are leaky, undersized, or need extending, expect to add $500–$4,000 to the project. In homes without existing ductwork, a complete duct system adds $3,000–$8,000 — at which point a ductless mini-split system often makes more economic sense.

4. Equipment Brand

Brand choice affects price, but not as dramatically as sizing or efficiency tier. Carrier, Trane, Lennox, and Rheem occupy similar price ranges at equivalent SEER2 ratings. The installer's labor quality and warranty support matter more than the brand nameplate.

5. Local Labor Rates

Labor varies significantly by region — installation in San Francisco or New York runs higher than in smaller Midwest or Southern markets. Permits (required in most jurisdictions) add another $150–$500 to the total.

Cost by System Type

• Central AC replacement (existing ductwork): $3,500–$8,000
• Central AC new install (with new ductwork): $6,000–$15,000
• Single-zone ductless mini-split: $2,000–$5,000
• Multi-zone mini-split (2–4 zones): $5,000–$14,000
• Heat pump (heating + cooling combined): $4,000–$10,000

How to Get an Accurate Quote

Any quote given without a site visit is an estimate, not a price. A proper AC installation quote should include:

• Equipment model number and SEER2 rating
• Labor — hours estimated and rate
• Permit fees
• Any ductwork modifications or repairs
• Refrigerant type and charge
• Warranty — manufacturer parts and contractor labor separately

HVAC Install Hub connects you with local contractors who provide itemized written quotes — no ballpark figures, no surprises. Submit a free request below and compare your options.