Krummen Heating and Air Conditioning, C-20 HVAC Contractor in Antioch, CA
Krummen Heating and Air Conditioning operating as a sole owner holds California contractor license #916792, which is currently expired (lapsed Jun 30, 2026) and not valid to contract until it is renewed. First issued in 2008, the license has been on the CSLB roster for 18 years. It carries a single CSLB classification: C-20 — HVAC Contractor. Records show an active surety bond on file with Atlantic Specialty Insurance Company and a previously-filed workers' compensation policy with Clear Spring Property and Casualty Company that is no longer active. The business is based in Antioch, in Contra Costa County, California.
- License Number
- 916792
- Issued
- Jun 4, 2008
- Status
- CLEAR
- Expires
- Jun 30, 2026
- Entity
- Sole Owner
- Surety
- Atlantic Specialty Insurance Company
- Bond Number
- 800250578
- Effective
- Jan 19, 2026
- Status
- Active
- Coverage
- Workers' Compensation Insurance
- Carrier
- Clear Spring Property and Casualty Company
- Policy Number
- CWC03174201
- Effective
- Jun 23, 2025
- Expires
- Jun 23, 2026
This contractor has a compliance issue in its public CSLB record:
- License expired
- No active workers' comp on file
An automated summary of public CSLB data, not a credit score, rating, or endorsement. How we determine this
Is Krummen Heating and Air Conditioning licensed in California?
Krummen Heating and Air Conditioning previously held California Contractors State License Board license number 916792, but the license expired on June 30, 2026 and is not currently valid. It was first issued on June 4, 2008.
What does Krummen Heating and Air Conditioning specialize in?
Krummen Heating and Air Conditioning is licensed for one CSLB classification: C-20 HVAC Contractor.
Where is Krummen Heating and Air Conditioning headquartered?
Krummen Heating and Air Conditioning is headquartered at 2124 Hamlin Drive, Antioch, CA 94509, in Contra Costa County, California.
Does Krummen Heating and Air Conditioning have an active surety bond on file with CSLB?
Yes. Krummen Heating and Air Conditioning has an active California contractor surety bond filed with Atlantic Specialty Insurance Company.
Does Krummen Heating and Air Conditioning carry workers' compensation coverage?
Krummen Heating and Air Conditioning has a previously-filed workers' compensation policy with Clear Spring Property and Casualty Company that is no longer active.
How do I verify Krummen Heating and Air Conditioning's contractor license?
You can verify Krummen Heating and Air Conditioning's license directly with the California Contractors State License Board at https://www.cslb.ca.gov/OnlineServices/CheckLicenseII/LicenseDetail.aspx?LicNum=916792.
- License issuedJun 4, 2008
- WC coverage startsJun 23, 2025
- Bond activeJan 19, 2026
- WC expiredJun 23, 2026
- License expiredJun 30, 2026
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