In San Francisco, the cost of a 3-ton HVAC replacement varies significantly based on the type of system you choose and local labor rates. Because San Francisco labor costs are 40% to 55% of the total project price and building codes require seismic safety upgrades, prices are generally higher than national averages.
Typical cost ranges for a 3-ton system include:
- Single-stage AC + gas furnace (14 SEER / 80% AFUE): $8,500 – $11,000
- Two-stage AC + gas furnace (16 SEER / 90% AFUE): $10,500 – $14,000
- Variable-speed heat pump (18 SEER / 10 HSPF): $12,000 – $16,500
- Ductless mini-split (22 SEER): $13,500 – $18,000
These estimates typically include the removal of the old unit, duct inspections, and local permit fees, which generally add between $300 and $600 to the final bill. High-efficiency units, while more expensive upfront, can provide annual energy savings ranging from $250 to $800 depending on the model.
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