MacDonald-Miller Facility Solutions, Inc.

MacDonald-Miller Facility Solutions is a union HVAC, plumbing, and electrical contractor serving the Pacific Northwest with over 60 years of expertise.

About

MacDonald-Miller Facility Solutions is a union HVAC, plumbing, and electrical contractor serving the Pacific Northwest. As a signatory contractor with the United Association of Journeymen and Apprentices of the Plumbing and Pipe Fitting Industry of the United States and Canada Local 32, the company employs skilled union tradespeople committed to quality and safety. With over 60 years of experience in the construction industry, MacDonald-Miller has built a reputation for delivering innovative, efficient, and reliable building systems. The company's core services include HVAC, plumbing, electrical, engineering, fabrication, and smart building controls. MacDonald-Miller specializes in prefabrication, Building Information Modeling (BIM), and energy-efficient building solutions, serving industrial, commercial, and institutional clients across the Pacific Northwest. Their experienced team brings expertise in cutting-edge technologies, custom prefabrication, and sustainable building practices. MacDonald-Miller serves clients throughout Washington, Oregon, and Idaho. Headquartered in Seattle, Washington, the company has 13 additional locations, allowing them to support projects ranging from local renovations to large-scale, multi-state industrial facilities. Their geographic reach and in-house prefabrication capabilities enable them to deliver complex mechanical and electrical systems with unparalleled efficiency and quality. The company maintains strong relationships with the United Association of Journeymen and Apprentices of the Plumbing and Pipe Fitting Industry of the United States and Canada and is committed to employing trained, certified tradespeople. MacDonald-Miller holds numerous certifications, including LEED accreditation, and has a bonding capacity of $25,000,000. Their commitment to safety is demonstrated by their industry-leading safety programs and excellent safety record. Notable projects include the award-winning Microsoft Thermal Energy Center in Redmond, Washington, and the BNBuilders Headquarters in Seattle, Washington. With a team of over 1,500 professionals, MacDonald-Miller has the resources to handle projects ranging from small-scale renovations to large-scale industrial facilities. The company's dedication to quality, innovation, and client satisfaction has earned them a reputation as a trusted partner in the Pacific Northwest construction industry. For HVAC, plumbing, and electrical services in the Pacific Northwest, MacDonald-Miller Facility Solutions offers reliable, high-quality workmanship and a commitment to sustainable building practices. Contact them to discuss your next construction project.

Service Area

States
Service Radius: 500 miles

Project Types

IndustrialCommercialInstitutional

Notable Projects

  • Microsoft Thermal Energy Center in Redmond, Washington
  • BNBuilders Headquarters in Seattle, Washington

Certifications & Memberships

Certifications

Contact Information

Map showing location of 1100 Dexter Ave N, Seattle, WA 98109, Seattle, WA 98109
Address
1100 Dexter Ave N, Seattle, WA 98109
Seattle, WA 98109

Company Details

Established
1959
Employees
251-500

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Data Sources

This information is compiled from publicly available sources to ensure accuracy and transparency.

macmiller.com(4 pages)• Accessed: 1/13/2026
safer.fmcsa.dot.gov• Accessed: 1/13/2026

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