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HVAC replacement cost guide
Verified 2026-09 · Updated 2026-09-11 · HomeTrueCost
A 3-ton central gas + AC swap typically runs $8,000–$16,000 installed — capacity and system type drive the range. Adjust the inputs for an itemized receipt.
Mid-grade replacement by state
| State | Labor | Materials | Permits | Total incl. 10% |
|---|---|---|---|---|
| TX | $3,290 | $6,240 | $270 | $14,844 |
| CA | $4,200 | $7,020 | $480 | $17,722 |
| FL | $3,255 | $6,435 | $360 | $15,223 |
| OH | $3,465 | $6,045 | $255 | $14,791 |
3-ton gas + AC, shoulder-month seasonal. Sources: BLS OEWS + BEA goods-RPP (2026-09-11) · methodology
What moves the number
Capacity and efficiency
Tonnage sets equipment size; SEER rating sets the tier. Two-stage and variable-speed systems cost more upfront and less to run.
System type
Cold-climate heat pumps run ~15% over gas + AC; dual-fuel hybrids ~25%. Check federal and utility rebates before comparing.
Ductwork condition
Like-for-like swaps assume sound ducts. New runs, sealing, or resizing can add thousands — get ducts inspected with the bid.
Shoulder-season timing
Spring and fall price about 5% under peak summer and winter. Emergency mid-heatwave swaps price at the top.
FAQ
How much does HVAC replacement cost in 2026?
A 3-ton gas + AC swap typically runs $8,000–$16,000. Heat pumps run about 15% more; high-SEER variable systems reach $20,000+. Rebates may offset heat-pump premiums.
What drives HVAC cost the most?
Capacity, efficiency rating, and system type — plus ductwork condition. New or heavily modified ducts can add thousands.
Is this quote a contractor bid?
No — a planning estimate. Correct sizing needs a Manual J load calculation; get 3 local bids.
Changelog
- 2026-09-11 — v1 — initial guide from BLS OEWS + BEA goods-RPP seed manifest.
Estimate only — not professional advice.