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

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

• ✓Mapleservice IncorporatedA · C-4 · C-20 · C-36 · #767710 Eureka · Humboldt County Active
• ✓Niekrasz Plumbing IncC-4 · C-34 · C-36 · C-42 · #292370 Eureka · Humboldt County Active
• ✓Spaulding MechanicalB · C-4 · C-10 · C-36 +1 · #643073 Eureka · Humboldt County Active
• ✓Wayne Maples Plumbing & Heating IncA · C-4 · C-16 · C-20 +1 · #747665 Eureka · Humboldt County Active

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