710 boiler, hot water & steam contractors checked against 6 data sources (Page 2 of 15)
Boiler, hot water heating, and steam fitting contractors.
710
Total Contractors
695
Active Licenses
97
Federal Records
Showing contractors 51-100 of 710
DEMAKAS PLUMBING & HEATING INC
2 flagsLicense #349523 · SAN FRANCISCO
ENVIRONMENTAL SYSTEMS INC
2 flagsLicense #422478 · SANTA CLARA
INCOM MECHANICAL INC
2 flagsLicense #517617 · PETALUMA
KNECHT'S PLUMBING & HEATING INC
2 flagsLicense #373936 · SAN LUIS OBISPO
LEGACY MECHANICAL & ENERGY SERVICES INC
2 flagsLicense #808022 · SAN RAMON
LOS ANGELES AIR CONDITIONING INC
2 flagsLicense #208872 · LA VERNE
MARTINEZ SHEET METAL INC
2 flagsLicense #222277 · MARTINEZ
PARAGON VENTURES INC
2 flagsLicense #459237 · STOCKTON
PRECISION PLUMBING MECHANICAL
2 flagsLicense #533836 · MOORPARK
RAWLINGS MECHANICAL CORPORATION
2 flagsLicense #374619 · SUN VALLEY
ABCO MECHANICAL CONTRACTORS INC
1 flagLicense #209064 · SAN FRANCISCO
ABM BUILDING SOLUTIONS LLC
1 flagLicense #976012 · SACRAMENTO
ADVANCE PLUMBING COMPANY
1 flagLicense #272557 · EL CAJON
AIR CONNECTION
1 flagLicense #805918 · SANTA ROSA
ALPHA BAY BUILDERS INC
1 flagLicense #668616 · SAN FRANCISCO
AMERICAN CHILLER SERVICE INC
1 flagLicense #605046 · RANCHO CORDOVA
ANDERSON ROWE & BUCKLEY INC
1 flagLicense #91594 · SAN FRANCISCO
ANDERSON SYSTEMS INC
1 flagLicense #497882 · GOLETA
BAY CITY BOILER COMPANY
1 flagLicense #320288 · HAYWARD
BEL AIR MECHANICAL INC
1 flagLicense #844161 · MARTINEZ
BELLANTI PLUMBING INC
1 flagLicense #327664 · SO SAN FRANCISCO
BROWN SHEET METAL AND MECHANICAL INC
1 flagLicense #238921 · OAKDALE
CALIFORNIA BOILER INC
1 flagLicense #496036 · SANTA ANA
CLARKE & RUSH MECHANICAL INC
1 flagLicense #608005 · SACRAMENTO
COMFORT ENERGY INC
1 flagLicense #858776 · MILPITAS
CONTINENTAL PLUMBING INC
1 flagLicense #399073 · MIRA LOMA
DE BELLA MECHANICAL INC
1 flagLicense #520449 · SANTA CLARA
HETHERINGTON GENERAL & PLUMBING CONTRACTOR
1 flagLicense #664033 · SAN FRANCISCO
HPS PLUMBING SERVICES
1 flagLicense #793014 · BAKERSFIELD
INDOOR ENVIRONMENTAL SERVICES
1 flagLicense #646794 · SACRAMENTO
KEY AIR CONDITIONING CONTRACTORS INC
1 flagLicense #668439 · SANTA FE SPRINGS
ONGARO & SONS
1 flagLicense #215233 · PETALUMA
PACIFIC RIM MECHANICAL CONTRACTORS INC
1 flagLicense #814462 · SAN DIEGO
PATTON AIR CONDITIONING
1 flagLicense #256026 · FRESNO
PORTER BOILER SERVICE INC
1 flagLicense #239280 · SIGNAL HILL
ROSS & SONS REFRIGERATION & CONSTRUCTION INC
1 flagLicense #781563 · FRESNO
SEACLIFF MECHANICAL SERVICES LLC
1 flagLicense #1058395 · LOS ALAMITOS
SLATER PLUMBING & MECHANICAL INC
1 flagLicense #744325 · BAKERSFIELD
SMITH MECHANICAL-ELECTRICAL-PLUMBING
1 flagLicense #420418 · SANTA MARIA
SUTTLES PLUMBING & MECHANICAL CORP
1 flagLicense #268688 · SIMI VALLEY
THERMAL MECHANICAL
1 flagLicense #256057 · SANTA CLARA
TRICO CONSTRUCTION
1 flagLicense #510127 · SAN FRANCISCO
VAN-MULDER SHEET METAL INC
1 flagLicense #279981 · HAYWARD
VOYTKO MECHANICAL INC
1 flagLicense #960002 · COMMERCE
WESTSIDE MECHANICAL INCORPORATED
1 flagLicense #773449 · COTATI
WITTLER-YOUNG SERVICE CO INC
1 flagLicense #302333 · LOS ANGELES
YUM'S MECHANICAL CO INC
1 flagLicense #583839 · SAN FRANCISCO
A & B MECHANICAL INC
ClearLicense #740508 · HAYWARD
A & N PLUMBING INC
ClearLicense #858471 · HOLLISTER
A B WELDING INC
ClearLicense #714869 · PRATHER
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.