AC Installation Cost in San Francisco, California
Our 2026 estimate for new AC installation in San Francisco, CA is $5,100 to $11,500. That puts San Francisco 21% above the national average, mainly because of higher incomes and home values, which push labor rates up.
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San Francisco Weather and HVAC Load
In a normal year, San Francisco racks up 3,260 heating and 29 cooling degree days (NOAA 1991-2020 normals). Heating is the bigger job here. The AC still runs every summer, but it works far fewer hours than the furnace does. Temperatures stay mild year-round: freezing nights and 90°F days are both rare.
| Heating degree days / year | 3,260 |
|---|---|
| Cooling degree days / year | 29 |
| Nights at or below 32°F | 1 |
| Days above 90°F | 1 |
| Average low / high | 50.6°F / 61.7°F |
San Francisco Housing Stock
Census figures put the median build year in San Francisco at 1945, so a typical house here has about 81 years on it. Houses that old often still have duct runs sized for an old coal or oil furnace and 60- or 100-amp electrical panels. Both can add cost when new equipment goes in. About 140,000 households here own their home, 38.5% of the occupied total. Homes here have a median value of $1,380,500 and households a median income of $141,446. Those two numbers drive the labor adjustment in our estimate.
San Francisco County had 3 hail days and 4 days with damaging thunderstorm winds from 2020 through 2025, according to NOAA storm records. Storms here are more likely to cause power surges than coil damage, so a surge protector on the outdoor unit is worth the small cost.
When It Makes Sense
- Summer electric bills keep going up
- It has had more than one refrigerant leak
- It still runs on R-22 refrigerant
- The house can't reach the thermostat setting on hot afternoons
What Moves the Price
- Tonnage, based on house size and local climate
- SEER2 rating and whether the compressor is single-stage or variable-speed
- Whether the coil and line set also need replacing
- Electrical work such as a new disconnect, breaker or wiring
- The pad, permit and refrigerant (R-410A or the newer R-454B)
We raised the national figures about 21% for San Francisco using local income, home values and the equipment size this climate needs. Real bids can still come in outside the range, so collect three written quotes.
What the Quote Should Cover
- Startup, an airflow check and warranty registration
- The electrical disconnect and wiring
- Refrigerant charge and a leak test
- Removing the old condenser and coil
- The new condenser, coil and, if needed, line set
California Permits, Efficiency Rules and Rebates
California is in the DOE's Southwest region, where new split central air conditioners need at least 14.3 SEER2 (13.8 SEER2 for systems of 45,000 BTU/h and up). The Southwest also sets a minimum EER2, which measures efficiency at peak heat. Plan on a mechanical permit for most replacements in San Francisco; the contractor normally pulls it. Before you sign, ask each bidder for their California license or registration number and proof of insurance. The federal 25C tax credit ended for equipment installed after December 31, 2025, so incentives now come mostly from utilities and state programs. Check your electric and gas utility's rebate page before you pick equipment.
Before You Hire
- Fall and early spring installs often come with better pricing and shorter waits.
- Ask for a Manual J calculation. "Same size as the old one" isn't sizing.
- Buy the condenser and coil as a matched set, or you may void the manufacturer warranty.
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AC Installation Questions from San Francisco Homeowners
How much is new AC installation in San Francisco?
Plan on $5,100 to $11,500, with most jobs near $8,600. Equipment efficiency, house size and the condition of the ducts and wiring decide where your quote falls.
When is the best time to schedule new AC installation in San Francisco?
Between late spring and early fall. San Francisco averages 1 freezing nights a year, and heating calls spike from November through February.
What size AC do I need?
It depends on square footage, insulation, windows and climate. The rough rule is a ton for every 450 to 650 sq ft, but only a Manual J calculation gives you a real number.
How long does a new AC last?
With yearly maintenance, 12 to 17 years. Salt air and extreme heat shorten that.
AC Installation Near San Francisco
- San Jose $5,400 to $12,100
- Fresno $4,500 to $10,100
- San Diego $5,500 to $12,400
- Sacramento $4,700 to $10,700
- Los Angeles $5,100 to $11,500
- Long Beach $5,100 to $11,600
- Oakland $5,100 to $11,500
- Bakersfield $4,600 to $10,500
Sources: U.S. Census Bureau ACS 5-year estimates 2019-2023 and 2024 population estimates; NOAA NCEI U.S. Climate Normals 1991-2020, station San Francisco Oceanside; NOAA Storm Events Database 2020-2025, San Francisco County. Prices are our estimates, not contractor quotes. Updated 2026.