Boiler, hot water heating and steam fitting contractors in Livermore, CA

7 licenses with the C-4 classification list Livermore (Alameda County) as their address with the state, 6 of them active. Active licenses with nothing flagged come first.

• ✓Barker Heating & CoolingB · C-4 · C-10 · C-20 +2 · #1043930 Livermore · Alameda County Active
• ✓Fault Line Plumbing IncC-4 · C-16 · C-20 · C-36 · #737079 Livermore · Alameda County Active
• ✓Marina Mechanical ServicesC-2 · C-4 · C-10 · C-20 +3 · #416198 Livermore · Alameda County Active
• ✓McNulty Mechanical IncorporatedC-4 · #494419 Livermore · Alameda County Active
• ✓Prime Mechanical Service IncB · C-4 · C-20 · C-36 +1 · #819114 Livermore · Alameda County Active
• ✓Superior Mechanical Services IncC-4 · C-20 · C-36 · #854680 Livermore · Alameda County Active
• !Mechanical Services LLCC-4 · C-20 · #1007708 Livermore · Alameda County Suspended: unpaid judgment

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