A3 Mechanical Systems, C-20 HVAC Contractor in San Jose, CA
A3 Mechanical Systems operating as a sole owner holds California contractor license #1040289, which is currently expired (lapsed Jun 30, 2026) and not valid to contract until it is renewed. First issued in 2018, the license has been on the CSLB roster for 8 years. It carries a single CSLB classification: C-20 — HVAC Contractor. Records show an active surety bond on file with North River Insurance Company (the) and active workers' compensation coverage from Wesco Insurance Company. The business is based in San Jose, in Santa Clara County, California.
- License Number
- 1040289
- Issued
- Jun 6, 2018
- Status
- CLEAR
- Expires
- Jun 30, 2026
- Entity
- Sole Owner
- Surety
- North River Insurance Company (the)
- Bond Number
- 04CF607697
- Effective
- Jan 1, 2023
- Status
- Active
- Coverage
- Workers' Compensation Insurance
- Carrier
- Wesco Insurance Company
- Policy Number
- WWC3809731
- Effective
- Oct 1, 2025
- Expires
- Oct 1, 2026
This contractor has a compliance issue in its public CSLB record:
- License expired
An automated summary of public CSLB data, not a credit score, rating, or endorsement. How we determine this
Is A3 Mechanical Systems licensed in California?
A3 Mechanical Systems previously held California Contractors State License Board license number 1040289, but the license expired on June 30, 2026 and is not currently valid. It was first issued on June 6, 2018.
What does A3 Mechanical Systems specialize in?
A3 Mechanical Systems is licensed for one CSLB classification: C-20 HVAC Contractor.
Where is A3 Mechanical Systems headquartered?
A3 Mechanical Systems is headquartered at 7052 Santa Teresa 165, San Jose, CA 95139, in Santa Clara County, California.
Does A3 Mechanical Systems have an active surety bond on file with CSLB?
Yes. A3 Mechanical Systems has an active California contractor surety bond filed with North River Insurance Company (the).
Does A3 Mechanical Systems carry workers' compensation coverage?
Yes. A3 Mechanical Systems carries active workers' compensation coverage through Wesco Insurance Company.
How do I verify A3 Mechanical Systems's contractor license?
You can verify A3 Mechanical Systems's license directly with the California Contractors State License Board at https://www.cslb.ca.gov/OnlineServices/CheckLicenseII/LicenseDetail.aspx?LicNum=1040289.
- License issuedJun 6, 2018
- Bond activeJan 1, 2023
- WC coverage startsOct 1, 2025
- License expiredJun 30, 2026
- WC expiresOct 1, 2026
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