Boiler, hot water heating and steam fitting contractors in Santa Rosa, CA

15 licenses with the C-4 classification list Santa Rosa (Sonoma County) as their address with the state, 15 of them active. Active licenses with nothing flagged come first.

• ✓Accurate Mechanical TradesB · C-4 · C-20 · C-38 +1 · #405288 Santa Rosa · Sonoma County Active
• ✓Air ConnectionC-4 · C-20 · C-61/D-64 · #805918 Santa Rosa · Sonoma County Active
• ✓Black Sun Boilers IncC-4 · #1040835 Santa Rosa · Sonoma County Active
• ✓Bozarth Plumbing CoC-4 · C-36 · C-61/D-64 · #662750 Santa Rosa · Sonoma County Active
• ✓C B S Plumbing & Heating IncC-4 · C-16 · C-20 · C-36 +1 · #294171 Santa Rosa · Sonoma County Active
• ✓Cold Air Performance & Heating IncC-4 · C-20 · #1138616 Santa Rosa · Sonoma County Active
• ✓George Merrill Construction ServicesA · B · C-4 · C-10 +1 · #1028696 Santa Rosa · Sonoma County Active
• ✓J W Hanson Heating and AirC-2 · C-4 · C-10 · C-20 +3 · #858773 Santa Rosa · Sonoma County Active
• ✓Le Duc & Dexter IncC-4 · C-16 · C-20 · C-36 +1 · #548129 Santa Rosa · Sonoma County Active
• ✓Lewis Mechanical Services IncC-4 · C-20 · C-38 · #803053 Santa Rosa · Sonoma County Active
• ✓N Huber Hydronics LLC Dba Nathaniel HuberC-4 · C-20 · #1004514 Santa Rosa · Sonoma County Active
• ✓Optemo HydronicsC-4 · #788924 Santa Rosa · Sonoma County Active
• ✓Roberts Service & ConstructionA · C-4 · C-10 · C-20 +1 · #556014 Santa Rosa · Sonoma County Active
• ✓Schefer RadiantC-4 · C-36 · #877442 Santa Rosa · Sonoma County Active
• ✓Tavares ConstructionB · C-4 · #1129960 Santa Rosa · Sonoma County Active

Source: CSLB license file, Nov 8, 2026All trades in Santa Rosa