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Listing of All Contractors |
| CONTRACTOR | PHONE | CITY | ST |
| A-Frame Concrete Cutting | (253) 946-6667 | Federal Way | WA |
| Adept Mechanical Services, Inc. | (253) 850-8518 | Kent | WA |
| Advanced Piping Technology (APT) | (206) 575-2710 | Tukwila | WA |
| Air Conditioning Company, Inc. | (253) 854-8444 | Kent | WA |
| Alaska Continental Pipeline, Inc. | (360) 864-8866 | Toledo | WA |
| Aldens Mechanical | (509) 674-5595 | Cle Elum | WA |
| Alliance Industrial Group Inc. | (503) 285-7100 | Portland | OR |
| American Mechanical Corp. | (206) 467-6407 | Monroe | WA |
| Anderson-Magruder Co., Inc. | (206) 784-4600 | Seattle | WA |
| Anthony Construction Company, Inc. | (206) 762-3780 | Seattle | WA |
| Apollo Sheet Metal, Inc. | (509) 586-1104 | Kennewick | WA |
| Associated Pipeline Contractors | Houston | TX | |
| Auburn Mechanical, Inc. | (206) 838-9870 | Auburn | WA |
| Badger Pocket Plumbing & Piping | (509) 968-3574 | Ellensburg | WA |
| Bailey Mechanical, Inc. | (206) 440-0101 | Shoreline | WA |
| Barnard Pipeline Inc | (406) 596-2969 | Bozeman | MT |
| Bates Plumbing, Inc. | (425) 485-2260 | Woodinville | WA |
| Bellevue Plumbing & Heating, Inc. | (425) 641-4222 | Bellevue | WA |
| Bering Industrial Contractors, Inc | (425) 774-1000 | Edmonds | WA |
| Betschart Mechanical, Inc. | (253) 848-1854 | Puyallup | WA |
| Bill's Plumbing & Heating, Inc. | (360) 683-7996 | Sequim | WA |
| BMWC-Pilchuck Constructors, Inc. | (425) 251-9091 | Kent | WA |
| BTU Mechanical, LLC | (877) 553-8905 | Tacoma | WA |
| C & H Plumbing | (206) 793-1301 | Covington | WA |
| Cambridge Plumbing | (509)687-9784 | Manson | WA |
| Carrier Corporation | (206) 439-0097 | Tukwila | WA |
| Carter Plumbing and Heating Inc | (425) 485-5888 | Seattle | WA |
| Cascade Sawing & Drilling, Inc. | (253) 872-7578 | Kent | WA |
| Central Washington Refrigeration Inc. | (509) 248-4600 | Yakima | WA |
| Charter Mechanical Contractors, Inc. | (503) 691-1700 | Tualatin | OR |
| Control Contractors | (206) 328-1730 | Seattle | WA |
| Covington Plumbing, Inc. | (425) 223-5802 | Bellevue | WA |
| Crescent Sheet Metal, Inc. | (253) 833-5054 | Auburn | WA |
| CSRCO, INC.. | (360) 652-4353 | Millcreek | WA |
| DA Macy | (206) 930-9113 | Seattle | WA |
| D & M Plumbing | (253) 627-3300 | Tacoma | WA |
| Design Air LTD. | (253) 854-2770 | Kent | WA |
| Diamond B Constructors, Inc. | (360) 734-3600 | Bellingham | WA |
| DM Kelly Mechanical, Inc. | (360) 802-3758 | Enumclaw | WA |
| Doubl-Kold, Inc. | (509) 248-9588 | Yakima | WA |
| DR Brudvik | (425) 771-6024 | Lynnwood | WA |
| Dungeness Plumbing | (360) 582-1227 | Sequim | WA |
| Eagle Harbor Associates LLC | (360) 779-8201 | Poulsbo | WA |
| Elliott Bay Laboratory Services | (206) 283-0535 | Seattle | WA |
| Engel Mechanical, Inc. | (360) 403-9504 | Arlington | WA |
| Enviromech | (425) 881-2990 | Redmond | WA |
| Evergreen State Mechanical, Inc. | (253) 735-8341 | Auburn | WA |
| F Rodgers Specialty Contractors, Inc. | (253) 867-56601 | Renton | WA |
| Fluid Mechanical, Inc. | (206) 624-6111 | Kennewick | WA |
| General Construction Company | (360) 779-3200 | Pouslbo | WA |
| General Mechanical, Inc. | (253) 627-8155 | Tacoma | WA |
| Granston Mechanical | (360) 568-8000 | Everett | WA |
| Gulf States Plumbing & Medical, Inc. | (718) 948-1035 | Houston | TX |
| H.V.A.C Solutions | (206) 229-2791 | Kenmore | WA |
| Harder Mechanical | (503) 281-1112 | Portland | WA |
| Haskell Corp. | (360) 734-1200 | Bellingham | WA |
| Hawk Mechanical Contractors, Inc. | (360) 794-8783 | Monroe | WA |
| Hermanson Company LLP | (206) 575-9700 | Kent | WA |
| Holaday Parks, Inc. | (206) 248-9700 | Seattle | WA |
| Holmberg Plumbing & Heating, Inc. | (425) 822-2233 | Kirkland | WA |
| Honeywell, Inc. | (763) 954-4489 | Golden Valley | MN |
| Hudson Bay Insulation | (206) 763-9484 | Seattle | WA | Hussmann Corporation | (800) 395-9229 | Chino | CA |
| Inland Industrial Rigging, Inc. | (509) 536-7885 | Spokane | WA |
| Infrastructure Services Inc. | (425) 653-3675 | Bellevue | WA |
| JEM Contractors, Inc. | (425) 864-0452 | Burien | WA |
| JH Kelly, Inc. | (360) 575-3133 | Longview | WA |
| Johnson Controls, Inc | (425) 398-6900 | Bothell | WA |
| Johnson Controls, Inc | (414) 228-3166 | Milwaukee | WI |
| JP Francis & Associates, Inc. | (253) 872-8950 | Kent | WA |
| JSS Plumbing | (509) 997-1007 | Carlton | WA |
| K & D Mechanical | (253) 945-8204 | Federal Way | WA |
| Key Mechanical Company of Washington | (253) 872-7392 | Kent | WA |
| Kingdom Concrete Cutting | (425) 402-6048 | Bothell | WA |
| MacDonald Miller Facility Solutions, Inc. | (206) 763-9400 | Seattle | WA |
| Mackin & Little, Inc. | (253) 838-2529 | Spokane | WA |
| Madden Mechanical, Inc. | (253) 826-5797 | Buckley | WA |
| Maple Valley Plumbing and Pipeworks, Inc. | (425) 432-7599 | Ravensdale | WA |
| Marine Refrigeration Co., Inc. | (206) 283-4550 | Seattle | WA |
| Marley Cooling Tower | (913) 664-7400 | Overland Park | CA |
| McClintock & Turk, Inc. | (509) 535-7641 | Spokane | WA |
| McKinstry Company | (206) 762-3311 | Seattle | WA |
| Metcalf-Grimm Mechanical, Inc. | (360) 373-1429 | Bremerton | WA |
| Michels Pipeline Construction | (920) 583-3132 | Brownsville | TX |
| Morgan Mechanical | (425) 743-9731 | Lynnwood | WA |
| Mountain Pacific Pipeline | (253) 272-7881 | Tacoma | WA |
| MTM Contractors | (509) 534-2042 | Spokane | WA |
| Nardone Mech. Contractors, Inc. | (425) 776-6200 | Edmonds | WA |
| National Concrete Cutting Inc | (253) 854-2171 | Milton | WA |
| New England Leadburning Co | (781) 933-1940 | Woburn | MA |
| Ocean Park Mechanical, Inc. | (604) 218-7500 | Whiterock | BC | OFC General Contracting, Inc. | (206) 675-8933 | Seattle | WA |
| Ogborn Plumbing | (509) 486-9944 | Tonasket | WA |
| Olympic Heating & Air Conditioning, LLC | (425) 761-8730 | Renton | WA |
| P.R. Plumbing, LLC | (206) 764-9663 | Seattle | WA |
| P.S.F. Mechanical | (206) 764-9663 | Seattle | WA |
| P.S.I. | (425) 644-4443 | Bellevue | WA |
| P.T.E. Mechanical Systems | (425) 444-2998 | North Bend | WA |
| Paramount Mechanical Systems LLC | (425) 204-9700 | Renton | WA |
| Pease Piping, Inc. | (253) 539-0467 | Tacoma | WA |
| Penhall Co | (206) 763-9200 | Tukwila | WA |
| Peninsula Plumbing Company | (503) 761-0500 | Portland | OR |
| Performance Contracting, Inc. | (206) 623-8750 | Seattle | WA |
| Permacold Engineering, Inc. | (503) 249-8190 | Portland | OR |
| Pilchuck Contractors, Inc. | (360) 653-2160 | Kirkland | WA |
| Pipeline Construction Inc | (253) 445-4930 | Puyallup | WA |
| Pipeworks Mechanical Inc | (206) 396-8048 | Seattle | WA |
| Plumbing Today, Inc. | (360) 848-6685 | Mt. Vernon | WA |
| Portland Mechanical Contractors, Inc. | (503) 665-7400 | Milwaukie | OR |
| Potelco, Inc. | (253) 863-0484 | Sumner | WA |
| Precise Plumbing, LLC | (509) 679-8133 | Wenatchee | WA |
| Precision Mechanical | (425) 330-7275 | Snohomish | WA |
| Precision Pipe Fabricators | (360) 532-4422 | Aberdeen | WA |
| Protech Mechanical Contractors, Inc. | (253) 833-4999 | Auburn | WA |
| Puget Sound Refrigeration, Inc. | (206) 367-2500 | Seattle | WA |
| Purity Plumbing, Inc. | (360) 862-9333 | Snohomish | WA |
| Purodi Systems Inc | (206) 652-1449 | Seattle | WA |
| Quality Air, Inc. | (425) 485-7167 | Snohomish | WA |
| R.W. Plumbing. | (425) 486-8336 | Woodinville | WA |
| Ramsey Plumbing & Heating, Inc. | (509) 482-2775 | Spokane | WA |
| Refrigeration Unlimited, Inc. | (253) 474-3100 | Gig Harbor | WA |
| Rockford Corp dba Alaska Continental Pipeline Inc | (503) 647-0224 | Hillsboro | OR |
| S & E Pipeline Construction Company | (562) 868-9771 | Santa Fe Springs | CA |
| Seattle Concrete Core Drilling, Inc. | (425) 271-5124 | Covington | WA |
| Sequoyah Electric, LLC | (425) 814-6000 | Redmond | WA |
| SFS(Specialty Firestop Systems)Inc. | (360) 882-3068 | Vancouver | WA |
| Shinn Mechanical, Inc. | (425) 373-9800 | Bellevue | WA |
| Shoreline Concrete Sawing & Drilling | (206) 417-0533 | Shoreline | WA |
| Sideline Plumbing | (360) 886-1662 | Maple Valley | WA |
| Siemens Building Technologies, Inc. | (425) 507-4300 | Issaquah | WA |
| Signature Plumbing. | (509) 884-7303 | E Wenatchee | WA |
| SJS Mechanical | (425) 672-3247 | Edmonds | WA |
| Skilcraft Plumbing, Inc. | (253) 931-1282 | Auburn | WA |
| Snelson Companies, Inc. | (360) 856-6511 | Sedro Woolley | WA |
| Sno Valley Process Solutions, Inc. | (206) 679-1653 | Snohomish | WA |
| Special Projects Team (SPT) | (425) 488-5600 | Bothell | WA |
| Spectrum Services | (253) 850-7734 | Everett | WA |
| Speer Taps, Inc. | (425) 485-4764 | Carnation | WA |
| Stainless Piping System, Inc. | (206) 623-5800 | Seattle | WA |
| State Mechanical Company | (206) 575-7527 | Tukwila | WA |
| Stirrett-Johnson, Inc. | (360) 692-6128 | Silverdale | WA |
| Sunset Welding | (425) 351-0839 | Renton | WA |
| Superior Tapping, Inc. | (888) 859-9221 | Seattle | WA |
| Swift Plumbing & Heating, Inc. | (360) 779-2777 | Kingston | WA |
| Swisslog/Translogic. | (303) 373-7837 | Denver | CO |
| TDR Plumbing | (206) 361-1611 | Shoreline | WA |
| The Plumbing Solution | (253) 279-5330 | Buckley | WA |
| Thermal Logic | (425) 820-1791 | Kirkland | WA |
| Totem Pacific Contractors, Inc. | (253) 848-4697 | Sumner | WA |
| Trane Company | (425) 643-4310 | Redmond | WA |
| Tri-Mechanical, Inc. | (425) 391-6016 | Redmond | WA |
| Tri-State Enviromental Chamber Services, Inc. | (360) 681-7222 | Sequim | WA |
| Truetemp Northwest, Inc. | (253) 826-9640 | Sumner | WA |
| Tube Tech, Inc. | (425) 885-1389 | Bellevue | WA |
| University Mechanical Contractors, Inc. | (206) 364-9900 | Mukilteo | WA |
| Vital Mechanical Service | (253) 630-6933 | Kent | WA |
| WA Botting Company | (425) 483-7500 | Woodinville | WA |
| Washington Group International | (253) 931-9995 | Bellevue | WA |
| Washington Mechanical Contractors Inc | (360) 867-1190 | Olympia | WA |
| Wescold, Inc. (W.E. Stone) | (206) 284-5710 | Seattle | WA |
| William P. Gilbert Company, Inc. | (206) 767-7227 | Seattle | WA |
| Williams Instrumentation Consultants, Inc. | (360) 668-7042 | Woodinville | WA |
| Williams Mechanical, Inc. | (425) 303-0828 | Everett | WA |
| York International | (425) 251-9145 | Renton | WA |
| York Marine | (206) 285-0904 | Seattle | WA |
| (360) 435-3891 | Arlington | WA |