NAICS 238220 · Plumbing, Heating, and Air-Conditioning Contractors

Plumbers in Ontario, CA

49 licensed plumbers · every license checked against the issuer's file

More cities in California

Los Angeles 651San Diego 494San Francisco 437San Jose 384Sacramento 242Riverside 208Bakersfield 191Anaheim 181Santa Rosa 157Glendale 156Long Beach 145Fresno 143Van Nuys 134El Cajon 133Escondido 128Oakland 128
Listings 21–40How results are ordered
23

Jnsd Construction Inc

Ontario, CA · (323) 378-0109

CA-CSLB 1080741 · B C10 +2General contractorElectricianFire sprinkler contractor+1
License activechecked Oct 24, 2026
CallDetails
24

Kao Brian Yawching

Ontario, CA · (626) 347-3434

CA-CSLB 897876 · B C10 +2General contractorElectricianHeating and air conditioning+1
License activechecked Oct 24, 2026
CallDetails
27

Northstar Phac Inc

Ontario, CA · (866) 744-6192

CA-CSLB 916254 · C20 C36Heating and air conditioningPlumber
License activechecked Oct 24, 2026
CallDetails
31

Pisces Plumbing

Ontario, CA · (909) 552-3915

CA-CSLB 1133446 · C20 C36Heating and air conditioningPlumber
License activechecked Oct 24, 2026
CallDetails
33

Pro Tech Plumbing

Ontario, CA · (909) 988-7272

CA-CSLB 915091 · C36 C42PlumberExcavation, grading and paving
License activechecked Oct 24, 2026
CallDetails
36

Ruvico Inc

Ontario, CA · (800) 538-8426

CA-CSLB 1021363 · C36Plumber
License activechecked Oct 24, 2026
CallDetails