As the Pacific Northwest’s top-choice commercial mechanical contractor, MacDonald-Miller transforms intricate construction challenges into seamless realities. Our integrated, in-house expertise, from engineering, fabrication, and installation, ensures your project benefits from unparalleled efficiency, robust quality, and a commitment to long-term operational performance and safety.
Construction
Design-Build
Delivers fully integrated mechanical solutions from concept to completion, combining design, engineering, and construction for efficient, cost-effective results.
TAB
Verifies and fine-tunes building systems through precise testing, adjusting, and balancing to ensure peak performance, comfort, and efficiency.
Commissioning
Confirms building systems operate as intended through systematic testing and documentation, delivering long-term reliability and optimized performance.
Tenant Improvements
Transforms existing spaces with mechanical upgrades tailored to tenant needs, ensuring comfort, efficiency, and reliable building performance.
Safety
Prioritizes safety in every step of the process, with rigorous protocols and training that protect people, projects, and buildings.
From Design to Lifecycle Performance
800-962-5979 
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