Best AC Service San Francisco
HVAC contractor in San Francisco, California 94131
- Rating
- 5.0 / 5.0 from 14 reviews
- Address
- 1687 Church St, San Francisco, CA 94131
- Open
- 7 days a week
- Service area
- San Francisco
- Phone
- (415) 534-2170
About
Best AC Service San Francisco operates seven days a week from Church Street in the 94131 area. The business holds a 5.0 rating across 14 Google reviews.
Reach them at (415) 534-2170. Hours are 7 AM to 8 PM Monday through Friday, and 7 AM to 5 PM on Saturday and Sunday.
Service Area
Serving San Francisco.
Hiring an HVAC Contractor in San Francisco, California
California requires HVAC work to be performed by a licensed C-20 (Warm-Air Heating, Ventilating and Air-Conditioning) contractor. Before you hire, verify the contractor's license through the Contractors State License Board (CSLB). You can search by license number or business name at cslb.ca.gov. The search will show whether the license is active and disclose any complaints filed against the contractor.
Many HVAC projects require a building permit from your local San Francisco building department. Permit rules vary by project type and location, so check with the department before work begins. Your contractor should be familiar with permit requirements for your specific job.
When you call to discuss your project, ask the contractor about their license classification, their experience with your type of system, and their approach to permits and inspections. Get a written contract that spells out the scope of work, timeline, and cost. These steps help ensure the work meets code and protects you if something goes wrong.
What is a C-20 contractor license?
California classifies HVAC contractors as C-20 (Warm-Air Heating, Ventilating and Air-Conditioning Contractor). This is the license type required to perform air conditioning and furnace work in the state. [1]
How do I verify an HVAC contractor's license?
Use the CSLB online license checker at cslb.ca.gov. Search by the contractor's license number (up to 8 digits) or business name. The results show the license status and any complaint disclosures. [4]
Do I need a building permit for HVAC work in San Francisco?
Building permit requirements vary by project type and location. Check with the San Francisco building department before work begins to find out what permits your job requires. [3]
What should I ask an HVAC contractor before hiring?
Ask about their C-20 license, experience with your system type, and whether permits are needed for your project. Request a written contract that describes the work, timeline, and total cost. [2]
Why is a written contract important?
A written contract protects you by clearly stating the scope of work, timeline, and cost. It is a binding agreement that helps prevent misunderstandings and disputes. [2]
Where do I find the San Francisco building department?
The CSLB provides a directory of California city and county building departments. Look up San Francisco's department to learn about permit requirements for your specific project. [3]
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)
Contact Information
Business Hours
| Monday | 7 AM – 8 PM |
|---|---|
| Tuesday | 7 AM – 8 PM |
| Wednesday | 7 AM – 8 PM |
| Thursday | 7 AM – 8 PM |
| Friday | 7 AM – 8 PM |
| Saturday | 7 AM – 5 PM |
| Sunday | 7 AM – 5 PM |