Boiler, hot water heating and steam fitting contractors in San Diego, CA

14 licenses with the C-4 classification list San Diego (San Diego County) as their address with the state, 14 of them active. Active licenses with nothing flagged come first.

• ✓A O Reed & Co LLCA · B · C-4 · C-16 +6 · #7731 San Diego · San Diego County Active
• ✓Aerco Systems LLCC-4 · C-20 · #1084381 San Diego · San Diego County Active
• ✓Ahrens MechanicalA · B · C-4 · C-10 +7 · #957287 San Diego · San Diego County Active
• ✓B S D Builders IncA · B · C-2 · C-4 +4 · #879719 San Diego · San Diego County Active
• ✓County Burner and Machinery CorpC-4 · C-20 · C-61/D-21 · #324821 San Diego · San Diego County Active
• ✓Duwright Construction IncA · B · C-4 · C-10 +1 · #945172 San Diego · San Diego County Active
• ✓Envirotech IncB · C-4 · C-7 · C-20 +1 · #684671 San Diego · San Diego County Active
• ✓Jackson & BlancB · C-4 · C-7 · C-20 +3 · #188961 San Diego · San Diego County Active
• ✓Jk Morgan CompanyC-4 · C-7 · C-10 · C-20 +1 · #924622 San Diego · San Diego County Active
• ✓National Air & EnergyC-4 · C-20 · #706889 San Diego · San Diego County Active
• ✓Pacific Rim Mechanical Contractors IncB · C-2 · C-4 · C-20 +1 · #814462 San Diego · San Diego County Active
• ✓San Diego Backflow TestingC-4 · C-12 · C-34 · C-36 +1 · #1054091 San Diego · San Diego County Active
• ✓San Diego BoilerC-4 · #1136130 San Diego · San Diego County Active
• ✓West County MechanicalB · C-4 · C-20 · C-36 · #918076 San Diego · San Diego County Active

Source: CSLB license file, Nov 8, 2026All trades in San Diego