How much does it cost to replace an AC system in San Diego, CA?
Full AC system replacement in San Diego, CA typically runs $6,500–$12,000 installed for a standard-efficiency system, including the outdoor unit, indoor coil, and labor. High-efficiency systems run $10,000–$16,000 but can cut cooling bills 20–40%. Quotes vary mostly on sizing and ductwork condition — get the load calculation, not just a tonnage guess.
What you can check yourself
- Ask each bidder for their load calculation (Manual J) — a quote without one is a guess.
- Compare like-for-like efficiency (SEER2 rating) across quotes.
- Ask about utility rebates and federal tax credits in the quote — good installers itemize them.
Typical cost
Typical installed range in San Diego, CA: $6,500–$12,000 standard; $10,000–$16,000 high-efficiency. Ductwork replacement, if needed, adds $2,000–$5,000.
When to call a pro
This is a get-three-quotes job. The cheapest bid without a load calculation usually becomes the most expensive system you own.
HVAC pros in San Diego, CA
- Legacy Plumbing Heating & Air · 2534 State St Ste 457, San Diego, CA · 6194530365
- HVAC NOW California · 550 W Date St Ste 312, San Diego, CA · (619) 333-6356
- Ray Williams Refrigeration & Air Conditioning Inc. · 737 17th St, San Diego, CA · +16192333388
- SAN DIEGO MECHANICAL PRO · 415 LAUREL STREET 427, SAN DIEGO, CA · (858) 376 7506
- ROBERTSON MECHANICAL INC · P O BOX 7098, SAN DIEGO, CA · (619) 840 9191
- Carini Home Services · 825 Washington St, San Diego, CA · 6193325176
- San Diego Heating & Air Conditioning · 1286 University Ave 279, San Diego, CA · 6192724221
- Big City HVAC and Appliance Repair · 3113 Market St # A, San Diego, CA · +16195418118
Get free quotes from San Diego, CA pros →
Data by Servik — verified local pros from official license records and public sources. Cost figures are typical ranges, not quotes; a pro's written estimate is the real number.