FairReplace

Central air conditioner replacement cost in San Diego, CA

Installed, 3 ton (outdoor unit + matching coil)

Low$4,250
Typical$4,900
High$6,450

Metro area: San Diego-Chula Vista-Carlsbad, CA. Wages: BLS, May 2025. Permit notes checked October 2026.

A typical central AC (3 ton (outdoor unit + matching coil)) costs about $4,900 installed in the San Diego area, 5% above the national figure, because HVAC technicians here earn a median $36 an hour against $29 nationally.

Central air conditioner (3 ton (outdoor unit + matching coil)), installed

Prices for: San Diego-Chula Vista-Carlsbad, CA

Low$4,250
Typical$4,900
High$6,450

Unit $2,782 (online list price, middle of 8 listings) plus installation about $2,100 for this area. Permit fees and code extras are listed below the table.

How this estimate is built

Prices by size in San Diego

SizeLowTypicalHighNational typical
2 ton (outdoor unit + matching coil)$3,250$3,650$4,800$3,500
3 ton (outdoor unit + matching coil)$4,250$4,900$6,450$4,650
4 ton (outdoor unit + matching coil)$5,700$6,350$8,200$6,000
5 ton (outdoor unit + matching coil)$7,000$7,900$9,600$7,400

Local labor: what HVAC technicians earn here

Hourly wageSan Diego metroUnited States
25th percentile$28$23
Median$36$29
75th percentile$44$37

The San Diego market

The City of San Diego's Development Services Department requires a Simple MEP (no-plan) permit to replace a water heater, furnace, condensing unit, heat pump package unit or mini-split in a single-family home or duplex. Repair only needs no permit. One local quirk: the simple route covers water heater replacements except tankless types. Homeowners, property owners and licensed contractors may apply, and owner-builders upload Form DS-3042. An inspection can be scheduled once the invoice is paid and the permit issued. Per-item fees are listed as $122.97 for a water heater, $176.57 each for a furnace, heat pump package unit or mini-split and $131.52 for a condensing unit, though the city table should be checked directly. State law requires seismic bracing on every replacement water heater. Chula Vista, Carlsbad and other county cities issue their own permits.

Many coastal San Diego homes were built without air conditioning, while inland neighborhoods rely on it. Statewide, EIA found 54% of California homes have central air. If you are adding AC for the first time, ask about duct sizing as well as equipment, since ducts built for a furnace may be too small for cooling. A matching furnace or air handler may need to change too, so ask what the full quote includes.

Permits in San Diego

Permit for this jobYes (furnace, condensing unit, heat pump package unit, mini-split replacement need a Simple MEP permit; repair only is exempt) (source)
FeePer-item: water heater $122.97 each; furnace/FAU $176.57 each; heat pump package unit $176.57 each; air handler/mini-split $176.57 each; condensing unit for HVAC $131.52 each.
Who can pull itHomeowner/property owner (owner-builder with Form DS-3042) or licensed contractor
InspectionYes

Rebates in California

HEAR: paused. HOMES: announced, not open yet. Source: California Energy Commission, checked October 13, 2026.

  • TECH Clean California: Statewide heat pump HVAC and heat pump water heater incentives via contractors; also administers HEEHRA (fully reserved)
  • Golden State Rebates: Instant rebates on efficient appliances at retailers

What these programs cover, and other states

Other systems in San Diego

Central air conditioner cost in other metros

Sources