What HVAC actually costs in 2026
Two contractors quote the same 3-ton system at $5,500 and $12,500. We publish the data behind that range — equipment, efficiency rules, refrigerant changes, permits and rebates — state by state, with sources.
Why quotes vary so much
Efficiency minimums differ by region
Federal SEER2 minimums are not national. A system that is legal to install in Ohio may not be legal in Georgia, and in the South compliance is judged at installation, not manufacture.
The refrigerant transition repriced repairs
R-410A manufacture ended in January 2025. Recharging an older system now costs multiples of what it did in 2024, which changes the repair-versus-replace math on every pre-2025 unit.
Permits and rebates are local
Permit requirements, inspection rules and utility rebates vary by state and county — and they move real money on a job this size.
Costs by state
Deep-dive pages are live for the highest-cooling-load states; more publish as their data is sourced and reviewed — never before.
- Alabama
- Alaska
- Arizona
- Arkansas
- California
- Colorado
- Connecticut
- Delaware
- District of Columbia
- Florida
- Georgia
- Hawaii
- Idaho
- Illinois
- Indiana
- Iowa
- Kansas
- Kentucky
- Louisiana
- Maine
- Maryland
- Massachusetts
- Michigan
- Minnesota
- Mississippi
- Missouri
- Montana
- Nebraska
- Nevada
- New Hampshire
- New Jersey
- New Mexico
- New York
- North Carolina
- North Dakota
- Ohio
- Oklahoma
- Oregon
- Pennsylvania
- Rhode Island
- South Carolina
- South Dakota
- Tennessee
- Texas
- Utah
- Vermont
- Virginia
- Washington
- West Virginia
- Wisconsin
- Wyoming