We make buildings work better.

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

We want to make your facility run the best it can.

With over 1,000 talented professionals, 10 locations and our own fabrication shop, no project is too small or too big. Whether you simply have a service call, or are planning a 40-story office building, we have the right team of system experts – for you and your buildings’ needs.

Integrated Field Service Solution
Introducing MacLens

MacDonald-Miller technicians take service to the next level with our newest technology asset - MacLens. This tool is a wearable camera and communication headset, which provides real-time visibility of the condition and performance of our customer’s equipment. MacDonald-Miller is the only mechanical contractor in the PNW to offer this technology, which provides before and after videos into our customer’s call summary reports so our customers are always in the know.

Learn More


Through the eyes of your service tech

Your service tech is now equipped with the newest technology asset - MacLens.  These smart glasses share first-person, point-of-view, high quality audio & visual content. Because of this new offering, our clients have a better understanding of the work performed and can make better decisions about how to make their building work better.

We’re a winning team

MacDonald-Miller is the premier mechanical contractor in the Northwest. And a huge reason for that is our people. Here, nothing is higher priority than creating an environment where employees can craft their own path, embrace technology, expand their skills, and, just as important, be themselves. We are a 2015 Finalist for “Best Places to Work in Washington”, in large part because our atmosphere is one of creativity and camaraderie, where the level of dedication is matched by the amount of fun we have! Sound like a good fit? Go to macmiller.com/jobs to find out more about the wide variety of opportunities we have available in Washington and Oregon

Careers at MacMiller

We let our work speak for itself.
And it has a lot to say.

View Our Project Gallery
  • Home-Plate
  • north lot
  • UW multi-trade racks
  • Exterior - 600
  • Swedish_PerkinsWill
  • Key_Center
  • The Washington Athletic Club in downtown Seattle is a hotel, banquet facility and gymnasium, built in 1930 and recently the recipient of a new kind of energy upgrade.
  • Alley-111

Latest News

We make buildings work better.

Our Offices

Seattle

Ph: 206-767-7995

Corporate Mailing

PO Box 47983 / Seattle, WA 98146-7983

Corporate Street

7717 Detroit Ave SW / Seattle, WA 98106

Madison Office

1004 Madison Street / Seattle, WA 98104

Prefabrication Shop

3701 S Norfolk / Seattle, WA 98118

Directions
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Everett

Ph: 855-MAC-HVAC

Address

3211-1/2 Broadway Ave / Everett, WA 98201

Directions
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Bellevue

Ph: 206-767-7995

Address

12031 Northup Way / Suite 201 / Bellevue, WA 98005

Directions
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Tacoma

Ph: 253-680-3170

Address

2500 S Holgate St / Tacoma, WA 98402

Directions
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Portland

Ph: 971-244-0901

Address

12911 NE Airport Way / Portland, OR 97230

Directions
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Eugene

Ph: 971-244-0901

Address

5250 Highbanks Road / Suite 310 / Springfield, OR 97478

Directions
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Redmond/Bend

Ph: 541-526-0655

Address

1555 SE 1st Street / Redmond, OR 97756

Directions
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Moses Lake

Ph: 509-766-6637

Address

500 South Lasco Lane, Suite 227 / Moses Lake, WA 98837

Directions
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Our Locations