710 boiler, hot water & steam contractors checked against 6 data sources (Page 10 of 15)
Boiler, hot water heating, and steam fitting contractors.
710
Total Contractors
695
Active Licenses
97
Federal Records
Showing contractors 451-500 of 710
MADCON BUILDERS
ClearLicense #1146541 · GUERNEVILLE
MADCON INC
ClearLicense #584874 · HEALDSBURG
MALCOLM PLUMBING & MECHANICAL
ClearLicense #885680 · SAN FRANCISCO
MAPLES WAYNE PLUMBING & HEATING INC
ClearLicense #747665 · EUREKA
MAPLESERVICE INCORPORATED
ClearLicense #767710 · EUREKA
MARIN MECHANICAL II INC
ClearLicense #749299 · SAN RAFAEL
MARINA MECHANICAL SERVICES
ClearLicense #416198 · LIVERMORE
MARINA PLUMBING & HEATING
ClearLicense #574447 · MARINA
MARINE & INDUSTRIAL SERVICES INC
ClearLicense #534970 · ANTIOCH
MASTERSON BRYAN ENTERPRISES
ClearLicense #271933 · PETALUMA
MATRIX HG INC
ClearLicense #812232 · CONCORD
MAYA'S BOILERS INC
ClearLicense #1023703 · LA VERNE
MC DONAGH JOHN BUILDERS AND ENERGY SYSTEMS
ClearLicense #422946 · CASTRO VALLEY
MC DONALD O C CO INC
ClearLicense #177271 · SAN JOSE
MC KENNEY'S AIR CONDITIONING INC
ClearLicense #447218 · BAKERSFIELD
MCCLOSKEY MECHANICAL CONTRACTORS INC
ClearLicense #1053014 · BLACKWOOD
MCDONALD MECHANICAL
ClearLicense #1124892 · UKIAH
MCKENNA BOILER WORKS INC
ClearLicense #1044490 · OCEANSIDE
MCNULTY MECHANICAL INCORPORATED
ClearLicense #494419 · MODESTO
MCR PLUMBING INC
ClearLicense #707514 · CAMARILLO
MECHANICAL SERVICES LLC
ClearLicense #1007708 · LIVERMORE
MEHRA HEATER & BOILER SERVICE
ClearLicense #430220 · WEST COVINA
MERRILL GEORGE CONSTRUCTION SERVICES
ClearLicense #1028696 · SANTA ROSA
MEYER C R AND SONS COMPANY
ClearLicense #771491 · OSHKOSH
MIKE'S HEATING & AIR INC
ClearLicense #785004 · ANDERSON
MILLENNIUM PACIFIC TRADING INC
ClearLicense #928122 · SAN JOSE
MILLER SCOTT M
ClearLicense #1006302 · PETALUMA
MODERN HYDRONICS
ClearLicense #1044968 · OAKLAND
MONTANO PLUMBING INC
ClearLicense #621230 · SANTA CRUZ
MONTOYA RADIANT HEATING CO
ClearLicense #1137262 · FAIRFIELD
MOON BOB HEATING AND AIR INCORPORATED
ClearLicense #411700 · REDDING
MOUNTAIN MECHANICAL COMPANY
ClearLicense #1003956 · KERNVILLE
MSR MECHANICAL LLC
ClearLicense #1042634 · BENICIA
MURRAY COMPANY
ClearLicense #162382 · CYPRESS
MURRAY PLUMBING & FIRE
ClearLicense #824419 · REDDING
N C B
ClearLicense #1014257 · SPARKS
N V HEATHORN CO
ClearLicense #761659 · CONCORD
NATHANIEL HUBER
ClearLicense #1004514 · SANTA ROSA
NATION RESTORATION LLC
ClearLicense #1137994 · SACRAMENTO
NATIONAL AIR & ENERGY
ClearLicense #706889 · SAN DIEGO
NATIONWIDE BOILER INCORPORATED
ClearLicense #448144 · FREMONT
NCM INDUSTRIAL SERVICES INC
ClearLicense #830600 · CLOVIS
NDI PLUMBING INC
ClearLicense #889754 · RENO
NEW ENGLAND SHEET METAL AND MECHANICAL CO
ClearLicense #433674 · FRESNO
NEW PIPES INC
ClearLicense #906447 · PLEASANT HILL
NEWCOMB MECHANICAL INC
ClearLicense #699358 · SAN CARLOS
NIEKRASZ PLUMBING INC
ClearLicense #292370 · EUREKA
NOOTBAAR PLUMBING INC
ClearLicense #1073177 · MURRIETA
NOR CAL MECHANICAL LLC
ClearLicense #1012972 · GARBERVILLE
NORTHERN DIGITAL INC
ClearLicense #807306 · BAKERSFIELD
California requires all contractors performing boiler, hot water & steam work valued at $500+ to hold a valid CSLB C-4 license. Of the 710 licensed boiler, hot water & steam contractors in the state, 98% currently hold active licenses and 13.7% have at least one federal compliance record.
Manual vetting takes 45+ minutes per contractor and routinely misses violations in databases most people don't know to check. SiteVetter runs CSLB status, SAM.gov debarment, DOL wage violations, OSHA safety citations, and EPA environmental records in seconds—creating a timestamped compliance artifact.
Under California's "Controlling Employer" doctrine, general contractors face liability for subcontractor safety violations. For boiler, hot water & steam work specifically, 13.7% of licensed contractors have federal records that a standard CSLB license check wouldn't reveal. SiteVetter's 5-database check catches what a single-source verification misses.
Data sourced from California Contractors State License Board and federal databases. Updated weekly. For official verification, check directly with CSLB.