How much does it cost to replace an air conditioner?
Central AC replacement costs $3,500 for a 2-ton 14-SEER builder-grade unit, $5,800 for a typical 3-ton 16-SEER install with new lineset, and $10,000+ for a 4–5 ton 18+ SEER variable-speed condenser.
Quick price points (2026)
| Scope | Cost | What it includes |
|---|---|---|
| Low | $3,500 | central AC unit |
| Typical | $5,800 | central AC unit |
| High | $10,000 | central AC unit |
How to budget for this project
- Get 3 quotes
Get itemized quotes from at least three licensed contractors in your area.
- Adjust for your region
Compare the same scope and account for regional labor and permitting.
- Add 10–15% contingency
Hidden conditions, code upgrades and permit fees can increase the original quote.
- Plan the cash, not the financing
Build the replacement cost into the home's repair plan before the work becomes an emergency.