Work with us

Local 100 is proud to partner with more than 48 signatory contractors who share our goals of safe and efficient worksites, top-quality training, and state-of-the-art technology. Local 100 prides itself on partnering with a diverse group of dedicated contractors across the sheet metal industry. Our partners provide competitive contractual arrangements to accommodate the needs and sustainability of our partners, members, and the local industry, while maintaining a deep commitment to improving our communities.

Our cooperative efforts include labor management, organizing, and state-certified apprenticeship training programs. Our contractors and members have dedicated their time, talent, and resources for the purpose of providing quality craftsmanship at a fair and competitive price.

A.D.J. Sheet Metal, Inc.

  • 4510 Graphics Drive, White Plains, MD, 20695

  • 301-283-3000

  • Mike Doerk

  • HVAC

Journeyman Mechanical Contractors, Inc.

  • 2125 Baldwin Avenue, Suite 19B, Crofton, MD 21114

  • 301-261-6200

  • Derril Mackin

  • Mechanical HVAC

A.G. Prada Company 

  • Contact Local 100 for information

James R. Walls Contracting

  • 7813 Delano Rd., Clinton, MD 20735-1868
  • 301-856-3780
  • Jim Walls

  • Architectural Sheet Metal

All Mechanical And Plumbing LLC

  • Contact Local 100 for information

K.G. Sheet Metal LLC

  • 301 Prince Georges Boulevard, Suite D, Upper Marlboro, MD 20774

  • 301-390-2405

  • Kevin Grenier

All Seasons AC & Heating

  • 11900 SW McMullen Highway, Cumberland, MD 21502

  • 301-777-8007

  • Phillip Peer

  • Residential

Linx Industries

  • 2600 Airline Boulevard, Portsmouth, VA 23701

  • 757-488-1144

  • Ryan Johnson 

  • Fabrication Round & Flat Oval, Yellow Label HVAC

American Testing

  • 3220-F Corporate Court, Ellicott City, MD 21043
  • 410-461-6211 (Baltimore) or 301-854-2117 (Washington)

  • Pat Kelly or Mike Kelly

  • Testing & Balancing

Mecco, Inc.

  • 10545 Guilford Road, Suite 105, Jessup, MD 20794
  • 301-953-7600
  • Mechanical Contractor

Ample Sheet Metal

  • 7501 Connelley Dr Ste A, Hanover, MD 21076

  • 410-760-6401

  • Gary March & Bryan Malle

  • HVAC & Industrial

Metro Mechanical Contractors

  • 5611 Lafayette Place, Hyattsville, MD 20781
  • 301-927-4077

  • Dale Trunnell

  • HVAC

Arica Consulting & Contracting, LLC

  • 8309-A Sherwick Court, Jessup, MD 20794

  • 301-498-4441

  • Thomas Twigg

  • HVAC

Metro Test & Balance, Inc.

  • 9600 Fallard Court, Upper Marlboro, MD 20772

  • 301-808-3660

  • Frank Battaglino

  • HVAC, Air Testing & Balancing

Benedict Metal Works, Inc.

  • 231 Bugeye Square, Prince Frederick, MD 20678-3477

  • 240-545-1100

  • Jim Sanders

  • Minority Contractor, HVAC-Commercial

Mid-Atlantic Metal Works, Inc.

  • 101 Winston Street, Cumberland, MD 21502

  • 301-722-2215

  • Residential

Bernward Mechanical

  • Contact Local 100 for information

Norair Engineering

  • 337 Brightseat Road, Landover, MD 20785

  • 301-499-2202

  • Specialty Work

BMore Heating and Cooling

  • Contact Local 100 for information

O’Malley Sheet Metal, Inc.

  • 3621 Cameron Court, Ellicott City, MD 21042

  • 443-506-7405

  • Kevin O’Malley

  • HVAC

CMC Sheet Metal

  • 1208 Marblewood Avenue, Capitol Heights, MD 20743

  • 301-925-4040

  • HVAC, Specialty Sheet Metal, Welding

OOO Enterprises, Inc.

  • Contact Local 100 for information

Comfort Control, Inc.

  • 6711 Distribution Drive, Beltsville, MD 20705

  • 301-931-9300

  • Balancing

Penn Air Control Inc

  • Contact Local 100 for information

Craftcorps Inc.

  • 217 W. Williamsburg Road, Sandston, VA 23150

  • 804-737-9296

  • Mark Mullen

  • Commercial, Building, Construction

Potomac Metal & Supply

  • P.O. Box 1415, Cumberland, MD 21502

  • 301-722-4030

Cushing Manufacturing & Equipment Co.

  • 2901 Commerce Road, P.O. Box 24365, Richmond, VA 23224

  • 804-231-1161

  • Ross Jennings

  • Production, Shop, Specialty Work

Pro Stainless

  • RT. 5, P.O. Box 830, Keyser, WV 26726

  • 304-788-5041

  • Food & Beverage

PTL Contracting, LLC

  • Contact Local 100 for information

Densel Company

  • 7640-A Airpark Road, Gaithersburg, MD 20879-4155

  • Brian Miller

  • Light Commercial & Service Work

R.H. Lapp & Sons, Inc.

  • 880 Kelly Road, Cumberland, MD 21502

  • 301-724-6650

  • Ray Bittner

  • HVAC & Pipe

East Coast Metal Systems, Inc.

  • P.O. Drawer 7372, Wheeling, WV 26003

  • 304-909-4220

  • Metal Roofing

R.S. Harritan Company, Inc.

  • 13280 Formex Road, 24157 Richmond, VA 23224

  • 804-275-7821

  • Randy Harritan & George Bolton

  • Heavy Industrial & Commercial

Environmental Balancing Corp.

  • 401 Carroll Street #102, La Plata, MD 20646

  • 301-868-6334

  • Ray Hardesty

  • Air Testing & Balancing

Semco Duct & Acoustical

  • 1967 Blue Hills Drive NE, Roanoke, VA 24012-8609

  • 540-342-5930

  • Spiral Pipe & Fittings

Fingles Metalworks, Inc.

  • 2256 Reisterstown Road, Baltimore, MD 21217

  • 410-523-3300

  • London Anthony

Seneca Balance Inc.

  • 2301 Willoughby Beach Road, Edgewood, MD 21040

  • 800-938-2252

  • Stan Fleischer

  • Air Testing & Balancing

Hite Associates, Inc.

  • P.O. Box 1273, Cumberland, MD 21502

  • 301-729-0920

Southland Industries

  • Shop: 8397 Terminal Rd, Lorton, VA 22079

  • 703-834-5570

  • Frank Roberts

  • Energy Management Retrofit

Hot & Cold Corporation

  • Contact Local 100 for information

Spinfinity

  • 4142 Melrose Avenue, NW Roanoke, VA 24017
  • 540-283-9370

  • Rings for Spiral Pipe 

I & B Associates, Inc.

  • 6925 4th Street NW, Unit 201, Washington, D.C. 20012

  • 202-269-2761

  • Harvey Brackett

SSM Industries, Inc.

  • 3401 Grand Avenue, Pittsburgh, PA 15225

  • 412-777-5100

  • Mechanical & Industrial

IAC Metals, Inc.

  • 8482 Virginia Meadows Drive, Manassas, VA 20109 

  • 703-257-4945

  • Charles Jayne

  • HVAC, Commercial, Air Testing & Balancing

Stromberg Metal Works, Inc.

  • 6701 Distribution Drive, Beltsville, MD 20705

  • 301-931-1000

  • HVAC, Welding Architectural & Specialty Metal Work

J.B. Whelan, Inc.

  • Contact Local 100 for information

W.E. Bowers & Associates, Inc.

  • 12401 Kiln Court, Beltsville, MD  20705-1323
  • 301-419-2488

  • Tim Aley

  • HVAC Commercial

James Myers Company, Inc.

  • 12306 Conway Road, Beltsville, MD 20705

  • 301-419-0091

  • Jim Myers

  • Roofing, Sheet Metal

Walter N. Yoder & Sons, Inc.

  • Route 6, McMullen Highway, P.O. Box 1337 Cumberland, MD 21502

  • 301-729-0610

  • Bill Hunter

  • HVAC & All Major Fabrication