Mason Air Systems, C-20 HVAC Contractor in Canyon Country, CA
Mason Air Systems operating as a sole owner holds an active California contractor license (CSLB #1019634), valid through Oct 31, 2026. First issued in 2016, the license has been on the CSLB roster for 10 years. It carries a single CSLB classification: C-20 — HVAC Contractor. Records show an active surety bond on file with American Contractors Indemnity Company and active workers' compensation coverage from Wesco Insurance Company. The business is based in Canyon Country, in Los Angeles County, California.
- License Number
- 1019634
- Issued
- Oct 20, 2016
- Status
- CLEAR
- Expires
- Oct 31, 2026
- Entity
- Sole Owner
- Surety
- American Contractors Indemnity Company
- Bond Number
- 100691569
- Effective
- Jan 1, 2023
- Status
- Active
- Coverage
- Workers' Compensation Insurance
- Carrier
- Wesco Insurance Company
- Policy Number
- WES3857675
- Effective
- Mar 31, 2026
- Expires
- Mar 31, 2027
This contractor is verified, with no adverse conditions in the current CSLB record.
An automated summary of public CSLB data, not a credit score, rating, or endorsement. How we determine this
Is Mason Air Systems licensed in California?
Yes. Mason Air Systems holds California Contractors State License Board license number 1019634, which is active and in good standing. The license was first issued on October 20, 2016. It is valid through October 31, 2026.
What does Mason Air Systems specialize in?
Mason Air Systems is licensed for one CSLB classification: C-20 HVAC Contractor.
Where is Mason Air Systems headquartered?
Mason Air Systems is headquartered at 19876 Ermine St, Canyon Country, CA 91351, in Los Angeles County, California.
Does Mason Air Systems have an active surety bond on file with CSLB?
Yes. Mason Air Systems has an active California contractor surety bond filed with American Contractors Indemnity Company.
Does Mason Air Systems carry workers' compensation coverage?
Yes. Mason Air Systems carries active workers' compensation coverage through Wesco Insurance Company.
How do I verify Mason Air Systems's contractor license?
You can verify Mason Air Systems's license directly with the California Contractors State License Board at https://www.cslb.ca.gov/OnlineServices/CheckLicenseII/LicenseDetail.aspx?LicNum=1019634.
- License issuedOct 20, 2016
- Bond activeJan 1, 2023
- WC coverage startsMar 31, 2026
- License expiresOct 31, 2026
- WC expiresMar 31, 2027
- Ramco Sheet Metal#297761Covina·C-20 HVAC Contractor
- Maloney E L CO#296761San Marino·B General Building Contractor
- House of Metal Engineering#295934Covina·C-20 HVAC Contractor
- Bowman of Arcadia#295706Arcadia·C-20 HVAC Contractor
- Cypress Heating & Air Conditioning#302865Glendora·C-20 HVAC Contractor
- Wittler-Young Service CO INC#302333Los Angeles·C-4 Boiler, Hot Water Heating and Steam Fitting Contractor
- Hud Industries#302215Gardena·C-20 HVAC Contractor
- Prc Mechanical#311690Burbank·C-4 Boiler, Hot Water Heating and Steam Fitting Contractor
Working a California job with Mason Air Systems, or chasing an unpaid invoice? These free tools track your mechanics lien deadlines and rights under California Civil Code §§8200–8848.
- California preliminary notice deadline calculatorFind your 20-day deadline and the lien rights at risk.
- Do I need a preliminary notice in California?Answer a few questions to see if the 20-day notice applies.
- Did I lose my California lien rights?Check whether your mechanics lien window has passed.
- Unpaid construction invoice in CaliforniaYour options and deadlines for collecting on a California job.
Own Mason Air Systems? Claim or correct this profile