Contractors

We are proud of the local professionals who make our organization great. If you're looking for support on your next project, you've come to the right place.

Concrete Cutting+

CompanyCityPhone
Arbor Heights Concrete Core Drilling, LLCSeattle(206) 909-8266
Cascade Sawing & Drilling IncKent(253) 872-7578
Penhall CompanySeattle(206) 763-9200
Seattle Concrete Core Drilling, Inc.Covington(425) 271-5124
Shoreline Concrete Sawing & Drilling, LLCShoreline(206) 417-0533

Firestop Specialists+

CompanyCityPhone
D & G Mechanical Insulation, Inc.Sumner(253) 863-3100
Hudson Bay InsulationSeattle(206) 763-9484
Performance Contracting, Inc.(PCI)Seattle(206) 623-8750
SFS, IncVancouver(360) 882-3068

Gas Distribution+

CompanyCityPhone
InfrasourceSeattle(253) 606-4299
Michel's Pipeline ConstructionBrownsville(920) 583-1416
NW Utility ServicesKirkland(360) 653-2160
Pipeline Construction Inc.Lilliwap(253) 606-6608
Potelco IncSumner(253) 863-0484
Q3 ContractingLittle Canada(651) 365-7344
Snelson Companies IncSedro Wooley(360) 856-6511

Mechanical+

CompanyCityPhone
7 Hills Plumbing & Mechanical Inc.Mill Creek(425) 742-7795
Adept Mechanical Services Inc.Kent(253) 850-8518
AEI Williams Group Co. Covington(206) 383-5330
American Mechanical CorporationMonroe(206) 467-6407
Apollo Sheet Metal IncKennewick(509) 586-1104
Applied Process Cooling CorporationModesto(503) 689-1200
Auburn Mechanical IncAuburn(253) 838-9780
Bering Industrial Contractors, IncEdmonds(425) 774-1000
Betschart MechanicalPuyallup(253) 848-1854
Bigfoot Plumbing LLCTukwila(425) 449-0094
Blythe Plumbing & Heating, Inc.Bellingham(360) 733-7810
BMWC Constructors IncKent(425) 251-9091
Bratonia Mechanical LLCPoulsbo(360) 265-7405
Covington Plumbing Inc.Bellevue(425) 223-5802
D & M Plumbing, Inc.Tacoma(253) 627-3300
D A MacySeattle(206) 930-9113
Diamond B ConstructorsBellingham(360) 734-3600
Dm Kelly Mechanical IncEnumclaw(360) 802-3758
Eagle Harbor Associates, LLCPoulsbo(360) 779-8201
EnviromechBurien(206) 762-1960
General Construction CompanyFederal Way(253) 943-4200
General Mechanical, Inc.Tacoma(253) 627-8155
GS Mechanical, LLCRedmond(206) 372-0332
Harder Mechanical ContractorsPortland(503) 281-1112
Haskell CorporationBellingham(360) 734-1200
Hawk Mechanical Contractors, Inc.Monroe(360) 794-8783
Hermanson Co., LLPKent(206) 575-9700
Holaday Parks, IncSeattle(206) 248-9700
Holmberg Plumbing And Heating IncBellevue(425) 822-2233
JH Kelly IncLongview(360) 575-3130
JP Francis & Associates IncKent(253) 872-8950
Macdonald MillerSeattle(206) 768-4006
Mackin & Little, Inc.Spokane(509) 838-2529
Madden MechanicalBuckley(253) 826-5797
Maple Valley Plumbing & Pipeworks IncRavensdale(425) 432-7599
McClintock & Turk IncSpokane(509) 535-7641
Mckinstry Company, Inc.Seattle(206) 762-3311
Nardone Mechanical Contractors IncEdmonds(425) 776-6200
Nutech (A Division of NCM Contracting Group, LP)Preston(800) 442-2072
Ocean Park Mechanical IncSurrey(604) 536-2363
Optimal Facility Solutions, LLCKirkland(425) 870-3435
Paramount Mechanical Systems, LlcRenton(425) 204-9700
Pease Piping IncTacoma(253) 539-0467
Penhall CompanyTukwila(206) 763-9200
Pinchiff Mechanical LLCSeattle206-767-1111
Platinum IndustrialLa Center(360) 852-3237
Plumbing Today IncMount Vernon(360) 848-6685
PMC Group/plumbing & Mechanical ContractorsMilwaukie(503) 656-7400
Precision Pipe FabricatorsAberdeen(360) 532-4422
PSF Mechanical, Inc.Seattle(206) 764-9663
Redline MechanicalEnumclaw(253) 939-6398
Shinn Mechanical IncKent(425) 203-9800
SJS Mechanical Services, LLCSeattle(206) 763-0334
Skyline PlumbingTroutdale(503) 793-6010
State Mechanical CompanyKent(206) 575-7527
Stirrett-Johnsen IncSilverdale(360) 692-6128
Swisslog/TranslogicDenver(303) 373-7837
Temp Control Mechanical, Inc. dba TCMPortland(503) 285-9851
Thompsons PlumbingBremerton(360) 479-8615
Triple C Fabricators LLCShelton(360) 490-8473
Unico Properties, LLCSeattle(206) 628-5073
Union Square Tenant ServicesSeattle(206) 613-5351
University Mechanical Contractors, Inc.(UMC)Mukilteo(206) 364-9900
Veca Electric Co, Inc.Seattle(206) 436-5200
Viking Plumbing & RooterKent(253) 632-6310
Vital Mechanical Service, IncRenton(253) 630-6933
West End Plumbing & MechanicalSekiu(360) 640-4443
Williams Mechanical IncEverett(425) 303-0828
Wilson Plumbing & Heating, Inc.Tacoma(253) 531-4952
Zuiderweg Construction, LLCArlington(360) 435-3891

Pipeline / Mainline+

CompanyCityPhone
Alaska Continental Pipeline, IncToledo(360) 864-8866
Appalachian Pipeline Contractors, LLPHendersonville(615) 264-8775
Associated Pipeline Contractors, IncHouston
Barnard Pipeline, IncBozeman(406) 586-2969
Brothers Pipeline CorperationToledo(360) 636-4463
Loy Clark PipelineTualatin(503) 644-2137
Michels Pipeline ConstructionBrownsville(920) 583-3132
Mountain Pacific Pipeline, IncTacoma(253) 272-7881
Q3 ContractingLittle Canada(651) 365-7344
Rockford CorporationHillsboro(503) 647-0224
Snelson Companies IncSedro Wooley(360) 856-6511
U.S. Pipeline, Inc.Houston(281) 531-6100
Welded Construction, L.P.Perrysburg(419) 874-3548

Projects only+

CompanyCityPhone
Acme Industrial Piping, IncChatanooga(423) 867-1001
Advanced Pneumatic Tubes, Inc.Corono(951) 735-4540
Biscayne Aquaculture, Inc.Austin(305) 248-8203
Encicon (A Division of Alstom Power Inc.)Denver(303) 223-4314
Henry F Teichmann, Inc.Canonsburg(724) 941-9550
Pipe Construction Inc.Ravensdale(425) 413-7473
S&E Pipeline Construction CompanySanta Fe Springs(562) 868-9771
Viking Industrial Inc.Chattanooga(706) 866-4016

Public Sector+

CompanyCityPhone
City of SeattleSeattle
Highline Water DistrictKent(206) 824-0375
King County FacilitiesSeattle(206) 296-0648
King County Health DepartmentSeattle
King County Housing AuthoritySeattle(206) 574-1119
Port of SeattleSeattle(206) 728-3351
Puget Sound Energy (PSE)Bellevue(206) 622-6767
Seattle Center OperationsSeattle
Seattle Center Operations MgmtSeattle
Seattle City LightSeattle
Seattle Concrete Core Drilling IncCovington(425) 271-5124
Seattle Facility ServicesSeattle(206) 684-8356
Seattle Housing AuthoritySeattle(206) 615-3384
Seattle Parks & RecreationSeattle
Seattle Public Utilities (SPU)Seattle
Washington State Specialty Compliance Ser. DivOlympia
Water District #49Burien(206) 242-8535

Refrigeration / HVAC+

CompanyCityPhone
Air Conditioning Company Inc (ACCO)Kent(253) 854-8444
Applied Process Cooling CorporationModesto(503) 689-1200
Auburn Mechanical IncAuburn(253) 838-9780
BTU Mechanical LLCTacoma(877) 553-8905
Carrier CorporationTukwila(206) 439-0097
Central Washington Refrigeration,LLC (dba TC Ref.inc)Yakima(509) 248-4600
Crescent Sheet Metal IncAuburn(253) 833-5054
D/B Solutions, LLCLynnwood(425) 744-6300
Doubl-KoldYakima(509) 248-9588
Economy Air Temp, Inc.Silverdale(360) 692-7180
EnviromechBurien(206) 762-1960
Fox Refrigeration, LLCBothell(206) 713-8806
H.V.A.C. Solutions, Inc.Kenmore(206) 229-2791
Hagen Industrial RefrigerationKent(206) 225-8757
Hermanson Co., LLPKent(206) 575-9700
Holaday Parks, IncSeattle(206) 248-9700
Honeywell, Inc.Golden Valley(763) 954-5323
Hoover Commercial Refrigeration, Inc.Mount Vernon(360) 445-2019
Integrated Systems Controls LLCWoodinville(206) 274-1625
Johnson Controls IncBothel(888) 524-7809
Key Mechanical Company of WAKent(253) 872-7392
Long Building TechnologiesSeattle(206) 328-1730
Macdonald MillerSeattle(206) 763-9400
Marine Refrigeration Company, Inc.Seattle(206) 283-4550
Mckinstry Company, Inc.Seattle(206) 762-3311
Morgan MechanicalEdmonds(425) 582-0473
Olympic Heating & Air Conditioning, LLCRenton(425) 761-8730
Optimal Facility Solutions, LLCKirkland(425) 870-3435
PermacoldPortland(503) 249-8190
Pinchiff Mechanical LLCSeattle(206) 767-1111
Platinum IndustrialLa Center(360) 852-3237
PMC Group/Plumbing & Mechanical ContractorsMilwaukie(503) 656-7400
Precision MechanicalSnohomish(877) 568-0205
PSF Mechanical, Inc.Seattle(206) 764-9663
PSR MechanicalSeattle(206) 367-2500
Refrigeration Unlimited, Inc.(RU)Tacoma(253) 474-3100
Sea-Temp LLCMaple Valley(206) 870-8367
Siemens Building Technologies, Inc.Issaquah(425) 507-4300
Sno Valley Process SolutionsEverett(206) 679-1653
Sound Specialized Services Inc.Everett(206) 427-3455
Spectrum ServicesN Lakewood(253) 850-7734
Sunbelt Controls, Inc.Azusa(626) 610-2340
Superior Mechanical, LLCEnumclaw(253) 736-3745
Thermal Logic Inc.Kirkland(425) 820-1791
TraneBellevue(425) 643-4310
Tri-mechanical, Inc.Bellevue(425) 391-6016
Truetemp Northwest, Inc.Sumner(253) 826-9640
University Mechanical Contractors, Inc.(UMC)Mukilteo(206) 364-9900
West Coast Mechanical SolutionsOlympia(253) 509-3857

Residential+

CompanyCityPhone
American Mechanical CorporationMonroe(206) 467-6407
Backflow Testing & Service, Inc.Lake Stevens(425) 334-3350
Centerline PlumbingSeattle(206) 920-4673
Covington Plumbing Inc.Bellevue(425) 223-5802
Diamond Plumbing & HeatingEdmonds(206) 459-9206
Edmond's Plumbing LLCArlington(206) 920-8000
Erik D Plumber LLCKenmore(206) 719-5758
Great Northern Plumbing ServiceLeavenworth(509) 548-7199
GS Mechanical, LlcRedmond(206) 372-0332
Gulf States Plumbing & Mechanical, Inc.Houston(718) 948-1035
H.V.A.C. Solutions, Inc.Kenmore(206) 229-2791
Harold's PlumbingAuburn(253) 833-2330
Hollow Log PlumbingLangley(206) 999-6387
Madden MechanicalBuckley(253) 826-5797
Mang ConstructionOrting(425) 446-0273
Maple Valley Plumbing & Pipeworks IncRavensdale(425) 432-7599
Mark's Plumbing ServiceEverett(425) 345-8321
Morgan MechanicalEdmonds(425) 582-0473
Paramount Mechanical Systems, LLCRenton(425) 204-9700
Plumbers CooperativeSeattle(206) 858-2633
Plumbing Today IncMount Vernon(360) 848-6685
Retrotech PlumbingSumner(253) 283-2728
Supreme Plumbing LLCSeattle(206) 730-2947
Thompsons PlumbingBremerton(360) 479-8615
Viking Plumbing & RooterKent(253) 632-6310
West End Plumbing & MechanicalSekiu(360) 640-4443
Zuiderweg Construction, LLCArlington(360) 435-3891

School Districts & Universities+

CompanyCityPhone
Lake Washington School District #414Redmond(425) 828-3200
Seattle School District #1Seattle(206) 298-7288
Seattle UniversitySeattle(206) 296-5869
Shoreline Public Schools #412Seattle(206) 367-6111

Shipyards+

CompanyCityPhone
Foss Maritime CompanySeattle(206) 281-3800
Lake Union Drydock Company IncSeattle(206) 323-6400
US Fab, LLCSeattle(206) 623-1635
Vigor Marine, LLCSeattle(206) 623-1635
Vigor Shipyards, IncSeattle(206) 623-1635
Washington State Ferry SystemSeattle(206) 515-3427

Tapping Specialists+

CompanyCityPhone
Speer Taps, IncCarnation(425) 485-4764

Wenatchee & Peninsula Area+

CompanyCityPhone
Apollo Sheet Metal IncKennewick(509) 586-1104
Bills Plumbing And Heating IncSequim(360) 683-7996
Blythe Plumbing & Heating, Inc.Bellingham(360) 733-7810
Doubl-KoldYakima(509) 248-9588
Grant Mechanical, Inc.Cel Elum(509) 674-6827
Great Northern Plumbing ServiceLeavenworth(509) 548-7199
Mackin & Little, Inc.Spokane(509) 838-2529
Ogborn Plumbing Contracting, Inc.Tonasket(509) 486-8004
Precise PlumbingWenatchee(509) 679-8133
Signature PlumbingE Wenatchee(509) 884-7303
Tru-Flow SystemsPort Angeles(360) 460-5721
West End Plumbing & MechanicalSekiu(360) 640-4443
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