Boiler, Hot-Water Heating and Steam Fitting Contractors in California (C-4)
California licenses thousands of Boiler, Hot-Water Heating and Steam Fitting contractors through the CSLB. This directory tracks 706 of them: 693 currently active (98%), with 100% carrying a contractor bond on file and 83% showing workers' compensation coverage. Every profile is dated against the official CSLB public record.
- 706
- Listed
- 693
- Active
- 706
- With bond
- 589
- With WC
Browse by city
- San Francisco (42)
- Sacramento (16)
- San Jose (15)
- Los Angeles (14)
- San Diego (14)
- Santa Rosa (14)
- Fresno (11)
- Bakersfield (9)
- El Cajon (9)
- Hayward (8)
- Petaluma (8)
- Santa Clara (8)
- Anaheim (7)
- Concord (7)
- Cypress (7)
- Oakland (7)
- Pasadena (7)
- Redwood City (7)
- San Rafael (7)
- Truckee (7)
- Livermore (6)
- Santa Barbara (6)
- Stockton (6)
- Berkeley (5)
- Redding (5)
- San Leandro (5)
- Santa Ana (5)
- South San Francisco (5)
- Sparks (5)
- Vallejo (5)
Boiler, Hot-Water Heating and Steam Fitting contractors
Western States Mechanical Inc
C-4 · Springville, UT
Verified August 4, 2026 · Bonded
Apollo Construction Services
C-4 · Kennewick, WA
Verified August 4, 2026 · Bonded
Pacific Greenhouse Services Inc
C-4 · Carpinteria, CA
Verified August 4, 2026 · Bonded
Mountain Mechanical Company
C-4 · Kernville, CA
Verified August 4, 2026 · Bonded
N Huber Hydronics LLC DBA Nathaniel Huber
C-4 · Santa Rosa, CA
Verified August 4, 2026 · Bonded
Dormatech Mechanical Systems Inc
C-4 · Vallejo, CA
Verified August 4, 2026 · Bonded
Scott M Miller
C-4 · Petaluma, CA
Verified August 4, 2026 · Bonded
Pan-Pacific Mechanical LLC
C-4 · Fountain Valley, CA
Verified August 4, 2026 · Bonded
Bay Area Mechanical LLC
C-4 · Santa Clara, CA
Verified August 4, 2026 · Bonded
Rogue Boiler Works
C-4 · Shady Cove, OR
Verified August 4, 2026 · Bonded
Carrasco Fabrication
C-4 · Stockton, CA
Verified August 4, 2026 · Bonded
Radiant Solar Technology Inc
C-4 · Ukiah, CA
Verified August 4, 2026 · Bonded
Mechanical Services LLC
C-4 · Livermore, CA
Verified August 4, 2026 · Bonded
Swplumbinc
C-4 · Alpine, CA
Verified August 4, 2026 · Bonded
Nor Cal Mechanical LLC
C-4 · Garberville, CA
Verified August 4, 2026 · Bonded
Boiler Dynamics Inc
C-4 · Anaheim, CA
Verified August 4, 2026 · Bonded
Gray Matter Mechanical Inc
C-4 · Chula Vista, CA
Verified August 4, 2026 · Bonded
N C B
C-4 · Sparks, NV
Verified August 4, 2026 · Bonded
Orebend BLDRS Inc
C-4 · San Francisco, CA
Verified August 4, 2026 · Bonded
Advanced Refrigeration
C-4 · Oakland, CA
Verified August 4, 2026 · Bonded
Dvbe Mechanical Inc
C-4 · Long Beach, CA
Verified August 4, 2026 · Bonded
Bobbie Knowles Plumbing
C-4 · Vallejo, CA
Verified August 4, 2026 · Bonded
Rock Construction and Consulting Inc
C-4 · Redwood City, CA
Verified August 4, 2026 · Bonded
O'Keeffe's Inc
C-4 · Brisbane, CA
Verified August 4, 2026 · Bonded
Frequently asked questions
How many Boiler, Hot-Water Heating and Steam Fitting contractors are licensed in California?
This directory lists 706 Boiler, Hot-Water Heating and Steam Fitting contractors in California, of which 693 currently hold an active CSLB license.
How do I check if a Boiler, Hot-Water Heating and Steam Fitting contractor is licensed in California?
Open the contractor's profile here for their dated CSLB status, or look up their license number directly on the CSLB "Check a License" tool. A license must be active (not expired, suspended, or inactive) to be valid.
Should a Boiler, Hot-Water Heating and Steam Fitting contractor carry a bond and workers' compensation?
Most active CSLB licensees carry a contractor bond, and any contractor with employees must carry workers' compensation. Each profile shows what the CSLB record reports.