Business Details
50+ Years
experience
Emergency
services
Premier HVAC & Mechanical Services in the Pacific Northwest
Founded in 1965, MacDonald-Miller has established itself as a leading mechanical contractor in the Pacific Northwest. With over 1,500 experts and 13 strategic locations, we specialize in HVAC, plumbing, electrical, engineering, fabrication, and smart building services. Our commitment to collaboration, precision, and innovation drives every project, from ground-up construction to tenant improvements. We leverage advanced technologies like Building Information Modeling (BIM) and maintain a 100,000-square-foot fabrication shop to ensure efficiency and quality.Our team delivers tailored solutions for healthcare, data centers, commercial buildings, and government facilities, prioritizing sustainability and long-term client partnerships. With 60 years of regional expertise, we focus on creating smarter, healthier, and more efficient buildings that meet evolving community needs. Our 24/7 service support and preventative maintenance programs ensure systems remain reliable and compliant throughout their lifecycle.
Services
HVAC Systems
Plumbing Solutions
Electrical Services
Building Information Modeling
Tenant Improvement
Energy Efficiency
Prefabrication
Maintenance Programs
Design-Build
Medical Gas Systems
Details
- Year established: 1965
Highlights and features
- We have over 60 years of experience in mechanical contracting across the Pacific Northwest.
- Our team consists of 1,500+ experts with specialized skills in HVAC, plumbing, and smart systems.
- We operate a 100,000-square-foot fabrication shop for precision manufacturing and faster delivery.
- Our 24/7 service team provides rapid response for emergency maintenance and repairs.
- We prioritize sustainability through energy modeling and LEED-certified project expertise.
What people say
Best in the field
Rapid response team
Sustainability focus
Expert project execution
Long-term partnership
Services
HVAC Systems
We design, install, and maintain high-performance HVAC systems for commercial and institutional buildings. Our solutions optimize energy efficiency while ensuring occupant comfort and regulatory compliance. With BIM integration and prefabrication capabilities, we deliver precise installations that reduce on-site labor and project timelines.
Building Information Modeling
Our BIM expertise enables collaborative project planning through 3D digital modeling. This technology improves coordination between trades, minimizes construction conflicts, and enhances system performance visualization. We use BIM for mechanical, electrical, and plumbing system design across complex building types.
Prefabrication
Our 100,000-square-foot fabrication facility produces customized mechanical components under controlled conditions. This approach ensures higher quality standards, reduces material waste, and accelerates project schedules. We fabricate ductwork, piping systems, and specialized equipment for commercial applications.
Energy Efficiency
We implement energy modeling, renewable energy integration, and system optimization strategies to reduce environmental impact. Our team helps clients achieve LEED certification through efficient mechanical designs that lower operating costs and carbon footprints for long-term building sustainability.
24/7 Maintenance
Our around-the-clock service team provides rapid response for critical system failures. We offer preventative maintenance programs for HVAC, plumbing, electrical systems, and building controls to ensure continuous operation and compliance with safety standards for commercial facilities.
People
Pat Cabe
Project Executive
With over 30 years in mechanical contracting, Pat specializes in complex healthcare projects. He leads design-assist initiatives that optimize system performance while maintaining strict budget controls for medical facilities.
Brian Kite
Director of Operations
Brian oversees fabrication operations, focusing on lean manufacturing principles. His expertise in modular construction improves project efficiency through strategic shop assembly of mechanical components.
Justin Shamblin
Senior Project Manager
Specializing in data center mechanical systems, Justin manages mission-critical infrastructure projects. He ensures precision in HVAC and plumbing installations that maintain optimal server environments.
Sierra McGinnis
Sustainability Coordinator
Sierra leads green building initiatives, focusing on LEED certification strategies. She integrates energy-efficient solutions that reduce environmental impact while meeting client operational goals.
Matt Barnes
VP of Service Operations
Matt directs 24/7 maintenance services, implementing predictive maintenance technologies. His team ensures continuous operation of mechanical systems through rapid response and preventative care programs.
Questions
What geographic areas do you serve?
We operate throughout Washington and Oregon, with 13 strategic locations including Seattle, Portland, and Spokane.
Do you offer emergency maintenance services?
Yes, our 24/7 service team provides immediate response for critical mechanical system failures and repairs.
What industries do you specialize in?
We focus on healthcare facilities, data centers, commercial buildings, and government projects requiring complex mechanical systems.
How do you ensure project quality?
We use Building Information Modeling, in-house fabrication, and rigorous quality control processes throughout every project phase.
Can you handle large-scale construction projects?
Yes, with 1,500+ professionals and 60 years of experience, we manage complex projects from design through completion.
What sustainability services do you offer?
We provide energy modeling, LEED certification support, and renewable energy integration to reduce building environmental impact.
