How Much Does Central AC Replacement Cost?
Replacing a central air conditioning system, priced largely by tonnage, efficiency (SEER) and home size.
How much does central ac replacement cost?
Replacing a central air conditioning system, priced largely by tonnage, efficiency (SEER) and home size. Most homeowners pay between $4,500 and $12,500 nationally, with a typical cost around $7,500. Use our calculator to adjust this range for your ZIP code.
What affects the price
- System tonnage & SEER rating
- Home square footage
- Ductwork condition
- Permit requirements
Repair vs. replacement
Replacement makes sense for aging, inefficient, or repeatedly failing systems.
Questions to ask your contractor
- What tonnage and SEER is right for my home?
- Is new ductwork needed?
- What rebates apply?
When to call a professional
Always — sizing, permitting and installation require a licensed contractor.
How we calculate this estimate
We start from national labor and materials benchmarks and apply a local cost factor based on your ZIP code and metro area, plus job complexity. Estimates are informational; actual contractor pricing may vary. Last reviewed 2026-05-01.
Frequently asked questions
What is the average cost of central ac replacement?
Nationally, central ac replacement typically runs around $7,500, with most jobs between $4,500 and $12,500. Your local price is adjusted by ZIP code.
Should I repair or replace?
Replacement makes sense for aging, inefficient, or repeatedly failing systems.
When should I call a professional?
Always — sizing, permitting and installation require a licensed contractor.