Boiler, hot water heating and steam fitting contractors in Fontana, CA
2 licenses with the C-4 classification list Fontana (San Bernardino County) as their address with the state, 2 of them active. Active licenses with nothing flagged come first.
- Gold Coast Refractory ServiceA · C-4 · #549085 Fontana · San Bernardino County Active
- S T L Fabrication IncC-4 · C-20 · C-36 · C-43 +3 · #927373 Fontana · San Bernardino County Active
Source: CSLB license file, Nov 8, 2026All trades in Fontana