We make buildings work better.

MacDonald-Miller Facility Solutions is the top choice, design-build, commercial mechanical contractor in the Pacific Northwest.

Tech in fabrication shop

Fabrication Services

When you choose MacDonald-Miller for your fabrication needs, you're not just getting a product – you're getting a commitment to excellence. Whether you're in search of Specialty Manufacturing, Piping Fabrication, or Sheet Metal Fabrication, we're here to serve you. With our expertise in bending, cutting and burning, forming, welding, and final assembly services, we're uniquely equipped to meet all custom requests because we have the right tools and the right people for any job!

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MacMiller Advantage


Your project works better
with MacDonald-Miller.

View Our Project Gallery
  • Killian Pacific
  • 8th Howell Exterior
  • Seattle Sheraton Boiler Retrofit
  • FAA Northwest Regional Headquarters
  • Inside the AeroCenter in Spokane Washington

We make buildings work better.