HVAC Contractors in South San Francisco, California: 6 listed, 5 with full details
South San Francisco has 6 HVAC contractors listed here. Two contractors—Heating & Cooling South San Francisco and South San Francisco Heating & Air Conditioning Repair—each hold 5.0-star ratings from 4 reviews. Work Atlas Heating leads by review volume with 4.8 stars from 32 reviews, followed by All Air Mechanical Contractor at 4.0 stars from 5 reviews. Four of the six list their hours online, three publish websites, and all six show street addresses in the 94080 ZIP code.
Get quotesLicense Requirements and Lookup
For HVAC work in California, check the California Contractors State License Board (CSLB) to verify that a contractor holds a C-20 (Warm-Air Heating, Ventilating and Air-Conditioning) license. A license is required for jobs over $500 in labor and materials. Use the CSLB's online lookup tool at https://www.cslb.ca.gov/OnlineServices/CheckLicenseII/CheckLicense.aspx to search by license number, business name, or contractor name. Each contractor's plastic pocket license displays their 8-digit license number.
Sources: [1, 2, 4]
Building Permits
Before hiring an HVAC contractor in South San Francisco, check with the local building department about permit requirements. According to the California Building Standards Code, building permits may be required depending on the scope of work and local code. Your contractor should advise whether a permit applies to your project.
Sources: [3]
Contractors with Online Presence
Three of the six contractors—Heating & Cooling South San Francisco, South San Francisco Heating & Air Conditioning Repair, and Work Atlas Heating—publish websites. Four contractors list business hours online. All six provide street addresses in South San Francisco, making it easy to contact them directly.
Sources
- California CSLB — licensing classifications (read 2026-09-20)
- California CSLB — hire a licensed contractor (read 2026-09-20)
- California CSLB — do I need a building permit? (read 2026-09-20)
- California CSLB — check a license (read 2026-09-20)
Questions about HVAC contractors in South San Francisco
How many HVAC contractors are listed in South San Francisco, CA?
6, every one with a phone number. 5 also list hours, a street address, a website or a rating with its review count, and 4 are rated 4.0 or higher on Google.
Which HVAC contractor in South San Francisco has the top Google rating?
South San Francisco Heating & Air Conditioning Repair at 5.0 from 4 reviews, Heating & Cooling South San Francisco at 5.0 from 4 reviews and Work Atlas Heating at 4.8 from 32 reviews. Ratings and review counts come from the business's Google profile; the list above is sorted by them.
What should I ask a South San Francisco HVAC contractor before hiring?
The California license number and proof of insurance, a written quote, the start date, and references from recent South San Francisco jobs. The directory lists contact details; it does not check licenses.
Other trades in South San Francisco, California
See every trade in South San Francisco or HVAC contractors in other cities.