San Francisco is known for its cool, foggy summers. But with rising temperatures, many wonder: do houses in San Francisco have air conditioning? This guide covers why many homes lack AC, how climate change is shifting trends, and what buyers and renters should consider. All facts are verified as of 2025 for accuracy.
Why San Francisco Homes Traditionally Lack Air Conditioning
San Francisco’s mild climate makes air conditioning rare in many homes. The city’s fog and ocean breezes keep summer temperatures around 70°F. Older homes, like Victorians, were built with natural cooling features.
- Cool Weather: Summer highs rarely exceed 90°F, with only about 15 hot days yearly [1]. Fog and breezes act as natural cooling.
- Older Homes: Victorian and Edwardian houses use high ceilings and large windows for ventilation, reducing the need for AC.
How Climate Change Is Changing the Game
Rising temperatures and wildfire smoke are increasing the demand for air conditioning. In 2023, 50% of San Francisco metro homes had AC, up from 36% in 2015 [2].
- More Hot Days: The city now sees about 30 days above 75°F annually [3].
- Wildfire Smoke: AC units with filters help keep indoor air clean during smoky summers.
- New Expectations: People moving from warmer areas often want AC in their homes.
| Year | Homes with AC (%) | Source |
|---|---|---|
| 2015 | 36% | [2] |
| 2019 | 47% | [4] |
| 2023 | 50% | [2] |
Air Conditioning in San Francisco Today
About half of San Francisco homes have air conditioning, but it varies by home type and area.
- Newer Homes: Modern condos in Mission Bay or South Beach often have central AC.
- Older Homes: Single-family homes and older condos rarely have AC. Some use portable or window units.
- Rentals: Newer apartment buildings are more likely to offer AC as an amenity.
Pros and Cons of Air Conditioning
Should you prioritize AC in a San Francisco home? Here’s a quick look:
Pros:
- Comfort on hot days.
- Cleaner air during wildfire season.
- Better for heat-sensitive residents.
Cons:
- High installation costs ($5,000–$20,000).
- Increased energy bills.
- Regular maintenance required.
| Factor | Pros | Cons |
|---|---|---|
| Comfort | Relief on hot days | N/A |
| Air Quality | Filters smoke | N/A |
| Cost | N/A | Expensive to install/operate |
| Maintenance | N/A | Needs regular upkeep |
Tips for Homebuyers and Renters
For Homebuyers:
- Check for AC: Confirm if the home has air conditioning or if adding it is feasible.
- Look for Ventilation: Homes with high ceilings or large windows stay cooler naturally.
- Plan Your Budget: Factor in installation costs if AC is a must.
Learn more about boosting property value in our post on How to Increase Your Home’s Value Before Selling.
For Renters:
- Ask About AC: Check if the rental has AC or allows portable units.
- Choose Cool Areas: Neighborhoods like the Outer Sunset stay cooler due to fog.
- Portable Options: Consider portable AC units for flexibility.
New to buying? Read Tips for First-Time Homebuyers for more advice.
Answering Common Questions
Here are answers to questions from Google’s “People Also Ask” and “Related Searches”:
- Is AC necessary in San Francisco? Not for most of the year, but it’s helpful during heat waves and smoky seasons.
- How many homes have AC? About 50% in 2023 [2].
- Is San Francisco getting hotter? Yes, with about 30 days above 75°F yearly [3].
- How to stay cool without AC? Use fans, open windows at night, and close blinds during the day.
Curious about San Francisco’s housing costs? See Why Are Houses in San Francisco So Expensive?.
Conclusion
San Francisco’s cool climate has historically made air conditioning unnecessary, but rising heat and wildfire smoke are changing that. As of 2023, 50% of homes have AC, and the trend is growing. Whether you’re buying or renting, weigh the costs, benefits, and your comfort needs to decide if AC is right for you.