Our Commercial HVAC and Refrigeration Contractors


UA Local 342 has multiple divisions of contractors.  Use the links below to view the sector of contractors that you're looking for:


A & B Mechanical Inc
Address:24179 Park Street
Hayward, CA 94544
Phone:(510) 264-5800
Able Engineering Services
Address:868 Folsom Street
San Francisco, CA 94107
Phone:(415) 546-6534
ABM Building Solutions, LLC
Address:6650 Goodyear Road
Benicia, CA 94510
Phone:(707) 746-5693
Absolute Air Inc
Address:210 Talbart Street
Martinez, CA 94553
Phone:(925) 228-8490
Acco Engineered Systems
Address:1133 Aladdin Avenue
San Leandro, CA 94577
Phone:(510) 346-4300
Air Systems Inc
Address:940 Remillard Court
San Jose, 95122
Phone:(408) 280-1666
Air Systems Serv & Const (ASSC)
Address:10381 Old Placerville Rd Ste 100
Sacramento, CA 95827
Phone:(916) 368-0336
All Temperature Service Air Conditioning
Address:1466 Seareel Place
San Jose, CA 95131
Phone:(408) 926-2718
Allied Htg & Air Cond CO Inc
Address:12 Deluca Place
San Rafael, CA 94901
Phone:(415) 459-5232
Alpine Mechanical Service Co, Inc.
Address:3991 First St, Ste. F
Livermore, CA 94551
Phone:(925) 292-4625
Automated Solutions Group
Address:2150 Bering Drive
San Jose, CA 95131
Phone:(408) 432-0300
Bay City Mechanical Inc
Address:4124 Lakeside Dr
Richmond, CA 94806
Phone:(510) 233-7000
Bay City Mechanical Service, Inc
Address:870 Harbour Way S
Richmond, CA 94804
Phone:(510) 660-3855
Bay Point Control/ Marina Mechanical
Address:799 Thornton Street
San Leandro, CA 94577
Phone:(510) 614-3500
Bel Air Mechanical Inc
Address:4100 Alhambra Ave Unit 2680
Martinez, 94553
Phone:(925) 609-9655
Bell Products Inc
Address:722 Soscol Avenue
Napa, CA 94559
Phone:(707) 255-1811
Berkeley Plbg & Htg CO Inc
Address:2160 Dwight Way
Berkeley, CA 94704
Phone:(510) 845-8200
Brothers Energy Inc
Address:11576 Manzanita Ln
Dublin, CA 94568
Phone:(925) 787-7480
Carrier Commercial Services
Address:600 McCormick St. Suite B
San Leandro, CA 94577
Phone:(510) 347-2000
CHM Mechanical Inc
Address:26120 Eden Landing Rd Ste 2
Hayward, CA 94545
Phone:(510) 723-0622
City Mechanical Inc
Address:724 Alfred Noble Drive
Hercules, CA 94547
Phone:(510) 724-9088
Climate Pros LLC
Address:2610 Lycoming St Ste 2
Stockton, CA 95206
Phone:(510) 784-8990
Climatech Mechanical Services
Address:1200 Krona Ln
Concord, CA 94521
Phone:(925) 771-9697
Cold Air Refrigeration Inc
Address:825 Arnold Dr Ste 110
Martinez, CA 94553
Phone:(925) 685-8890
Cold Room Solutions
Address:3942 Valley Ave
Pleasanton, CA 94566
Phone:(925) 462-2500
Comfort Air Mechanical Systems
Address:1742 Clement Avenue
Alameda, CA 94501
Phone:(510) 217-8980
Comfort Dynamics Inc
Address:823 Estabrook St
San Leandro, CA 94577
Phone:(510) 352-8501
Control Air North Inc
Address:30655 San Clemente St
Hayward, CA 94544
Phone:(510) 441-1800
Daikin Applied
Address:2568 Barrington Court
Hayward, CA 94545
Phone:(510) 786-4161
Dormatech Mechanical Systems
Address:400 Contra Costa St
Vallejo, CA 94591
Phone:(707) 653-4344
DX Cooling & Heating, Inc
Address:Pittsburg, CA
Phone:(925) 779-2151
Energy Mechanix Inc
Address:1290 Old County Rd Ste B-2
Belmont, CA 94002
Phone:(650) 595-1662
Address:12131 Western Ave
Garden Grove, CA 92841
Phone:(844) 436-8473
Estes Commercial Refrig Inc
Address:1400 Potrero Avenue
Richmond, CA 94804
Phone:(510) 232-5464
Extensive Air Conditioning
Address:2455 Bates Ave Ste I
Concord, 94521
Phone:(925) 214-8842
Freight Train Refrigeration, Inc
Address:300 Broadway Ste. 21
San Francisco, CA 94133
Phone:(415) 794-2415
Honeywell International Inc
Address:353-A Vintage Park Drive
Foster City, CA 94404
Phone:(650) 653-1658
ICOM Mechanical
Address:477 Burke St.
San Jose, CA 95112
Phone:(408) 792-2292
Indoor Environmental Services (IES)
Address:1512 Silica Avenue
Sacramento, CA 95815
Phone:(916) 570-1046
Johnson Controls Inc
Address:21270 Cabot Blvd
Hayward, CA 94545
Phone:(510) 780-7790
Key Mechanical
Address:747 Enterprise Court
Livermore, CA 94550
Phone:(925) 294-8111
Livermore Mechanical Inc
Address:2021 Las Positas Ct Ste 137
Livermore, CA 94551
Phone:(925) 292-1604
Matrix HG Inc
Address:115 Mason Circle Ste B
Concord, CA 94520
Phone:(925) 459-9200
Mechanical Services LLC
Address:2021 Las Positas Court Ste 121
Livermore, CA 94551
Phone:(925) 583-2661
Mesa Energy Systems Inc
Address:14450 Doolittle Dr
San Leandro, CA 94577
Phone:(510) 755-0826
Metro Services Group
Address:9000 Crow Canyon Rd Suite S329
Danville, CA 94506
Phone:(877) 786-3876
Monarch Mechanical
Address:5199 Fulton Dr, Ste D
Fairfield, CA 94534
Phone:(707) 374-4900
MSR Mechanical
Address:4501 California Ct
Benicia, CA 94510
Phone:(925) 997-3794
O C McDonald Company, Inc
Address:1150 W San Carlos St.
San Jose, CA 95126
Phone:(408) 295-2182
O'Keeffe Mechanical
Address:725 Cesar Chavez
San Francisco, CA 94124
Phone:(415) 824-8500
Omni Mechanical Solutions
Address:1452 N Vasco Rd Ste 284
Livermore, CA 94551
Phone:(209) 791-6664
Pacific Coast Trane
Address:310 Soquel Way
Sunnyvale, CA 94085
Phone:(408) 481-3712
Prime Mechanical Service, Inc.
Address:296 Wright Brothers Ave
Livermore, 94551
Phone:(877) 635-4328
Refrigeration Solutions LLC.
Address:4119 S Market Ct Ste A
Sacramento, 95834
Phone:(916) 371-7494
Southland Industries
Address:33225 Western Avenue
Union City, CA 94587
Phone:(510) 477-3300
Sunbelt Controls
Address:4511 Willow Rd Ste 4
Pleasanton, CA 94588
Phone:(925) 660-3900
Superior Mechanical Svcs Inc
Address:347 Wright Brothers Ave
Livermore, CA 94551
Phone:(925) 456-3200
Temperature Technology Inc
Address:418 N Buchanan Cir Ste 12
Pacheco, CA 94553
Phone:(925) 548-6299
Therma LLC
Address:1601 Las Plumas Ave
San Jose, CA 95133
Phone:(408) 347-3400
Thermotek Services Inc
Address:1452 N Vaso Rd Ste 294
Livermore, CA 94551
Phone:(925) 334-7111
Tradewinds Mechanical, LLC
Address:499 Edison Ct, Ste. C
Fairfield, CA 94534
Phone:(707) 435-3295
United Mechanical Inc
Address:2161 Oakland Rd
San Jose, CA 95131
Phone:(408) 232-9000
Vaz Air
Address:33850 S Bird Rd
Tracy, CA 95304
Phone:(925) 250-0198
Western Allied Mechanical
Address:1180 O'Brien Dr
Menlo Park, CA 94025
Phone:(650) 326-0750
Your Warm Friend Inc/ Atlas Heating & Air
Address:1451 32nd Street
Oakland, CA 94608
Phone:(510) 893-1343