Duff Mechanical Services
Aguanga · Riverside County · CA
LISTED
Bestopedia verdict
California’s contractor board lists Duff Mechanical Services in CLEAR standing. No active contractor bond is on file, and workers’ compensation coverage is current.
- License standing
- 30 / 30
- Years licensed
- 2.9 / 20
- Contractor bond
- 5 / 20
- Workers' comp
- 20 / 20
- Business structure
- 10 / 10
The verified record
- CSLB license
- #1109379 verify on CSLB ↗
- Classifications
- C-20
- Years licensed
- 2.9 years since 08/28/2023
- Contractor bond
- $25,000 NORTH RIVER INSURANCE COMPANY (THE) cancellation on file (07/25/2026)
- Workers’ comp
- Current CLEAR SPRING PROPERTY AND CASUALTY COMPANY
- Business type
- Sole Owner
- Qualifying principal
- Tyler David Duff
- Address of record
- 53815 Robin Ln, Aguanga, CA 92536
Frequently Asked Questions
Is Duff Mechanical Services a licensed HVAC contractor in California?
Yes. Duff Mechanical Services holds California CSLB contractor license #1109379 with a C-20 (Warm-Air Heating, Ventilating and Air-Conditioning) classification. Current CSLB status: CLEAR.
What work is Duff Mechanical Services licensed to perform?
License #1109379 carries C-20 (Warm-Air Heating, Ventilating and Air-Conditioning).
Is Duff Mechanical Services bonded?
Yes. Duff Mechanical Services carries contractor's bond #04CF645918 for $25,000 through NORTH RIVER INSURANCE COMPANY (THE). Note: a bond cancellation date (07/25/2026) is on file.
Does Duff Mechanical Services carry workers' compensation insurance?
Yes. Workers' compensation insurance is on file with CLEAR SPRING PROPERTY AND CASUALTY COMPANY, with a policy expiration of 09/09/2026.
How long has Duff Mechanical Services held its contractor license?
License #1109379 was originally issued on 08/28/2023, approximately 3 years ago (as of July 2026).
Where is Duff Mechanical Services located?
Duff Mechanical Services is based in Aguanga, Riverside County, CA 92536.