HVAC contractor (warm-air heating, ventilating and air conditioning)s in Diamond Bar, CA
35 licenses with the C-20 classification list Diamond Bar (Los Angeles County) as their address with the state, 35 of them active. Active licenses with nothing flagged come first.
- Ac Heat Diamond BarC-20 · #1145762 Diamond Bar · Los Angeles County Active
- Ace Rodil Heating and Air ConditioningC-20 · #631042 Diamond Bar · Los Angeles County Active
- AirpropowerC-10 · C-20 · #1150732 Diamond Bar · Los Angeles County Active
- Allwayz Heating & Air Conditioning IncC-20 · #1097372 Diamond Bar · Los Angeles County Active
- Atlantic Air Conditioning IncC-20 · #613226 Diamond Bar · Los Angeles County Active
- Aveo IncA · B · C-10 · C-20 +1 · #969881 Diamond Bar · Los Angeles County Active
- C S D M Inc Dba Cal Steam CompanyC-4 · C-20 · C-36 · #674646 Diamond Bar · Los Angeles County Active
- Chung Chieh WuC-20 · #1105504 Diamond Bar · Los Angeles County Active
- Ciel Air Conditioning and ElectricC-10 · C-20 · #1039457 Diamond Bar · Los Angeles County Active
- Climate SpecialistsC-20 · #1003654 Diamond Bar · Los Angeles County Active
- Four Seasons Air Conditioning and HeatingC-20 · #966880 Diamond Bar · Los Angeles County Active
- Green Air & RefrigerationC-20 · C-38 · #839148 Diamond Bar · Los Angeles County Active
- High Noon AirC-20 · C-38 · #1085441 Diamond Bar · Los Angeles County Active
- Hjr Contracting IncB · C-20 · #1041548 Diamond Bar · Los Angeles County Active
- Honest Pro Air Conditioning and HeatingC-20 · #1106190 Diamond Bar · Los Angeles County Active
- Jh Advanced HVAC SolutionsC-20 · #1163754 Diamond Bar · Los Angeles County Active
- Kenneth Daley Heating & Air ServicesC-20 · C-36 · #798187 Diamond Bar · Los Angeles County Active
- L B Air ConditioningC-20 · #1072480 Diamond Bar · Los Angeles County Active
- Lanyi USA IncC-20 · #1121762 Diamond Bar · Los Angeles County Active
- Likai Chen HVAC IncC-20 · #926434 Diamond Bar · Los Angeles County Active
- Mac Refrigeration and Air Conditioning CoC-20 · #580557 Diamond Bar · Los Angeles County Active
- McMaster MechanicalC-20 · #879152 Diamond Bar · Los Angeles County Active
- Medrara HVACC-20 · #1042958 Diamond Bar · Los Angeles County Active
- Mr A/CC-20 · #864636 Diamond Bar · Los Angeles County Active
- Plhk HVAC IncC-20 · #1151997 Diamond Bar · Los Angeles County Active
- Qin HVACC-20 · #1161560 Diamond Bar · Los Angeles County Active
- Raul Manuel MaganaB · C-20 · #1005647 Diamond Bar · Los Angeles County Active
- Service WizardsC-20 · C-36 · C-42 · #797071 Diamond Bar · Los Angeles County Active
- Thlc CorporationB · C-10 · C-20 · C-36 +1 · #1077041 Diamond Bar · Los Angeles County Active
- Yq Air Condition SolutionC-20 · #1077548 Diamond Bar · Los Angeles County Active
- Yuze Air ConditioningC-20 · #1086305 Diamond Bar · Los Angeles County Active
- Zhuoxin ConstructionB · C-10 · C-20 · #1116182 Diamond Bar · Los Angeles County Active
- Zip Renovation & AirB · C-10 · C-15 · C-20 +1 · #762505 Diamond Bar · Los Angeles County Active
- Zy HVAC Equipment ServicesC-20 · #1133374 Diamond Bar · Los Angeles County Active
- Gary'S Ac ServicesC-20 · #921063 Diamond Bar · Los Angeles County Active Workers' comp suspension pending
Source: CSLB license file, Nov 8, 2026All trades in Diamond Bar