
Sit back, relax, we’re in controls.
MacDonald-Miller is a full-service HVAC Building Controls Contractor. As a factory certified provider of global industry leading building controls solutions, we can be your one-stop shop for all your HVAC building control systems, lighting, small commercial, and balancing & commissioning solutions. We implement open-sourced web-based systems, allowing for remote monitoring and control of a building from a system-wide holistic standpoint. Now you can rest easy knowing you have a single system to make your buildings work better.
What We Do

All Building Types
- Critical Environments / Life Sciences
- Commercial Office / Mixed-Use
- K-12 & Higher Education
- Federal, State and Local Municipalities
- Hospitality & Entertainment
- Industrial
- Data Centers
- Healthcare

Mechanical Construction
Expertise
- Plan & Spec
- Preconstruction Services
- Design/Build – New Construction and Tenant Improvements
- Turnkey Projects including In-house Electrical
- HVAC System Retrofit and Modernization

Full Service Automated
Controls & Maintenance
- Extended Warranty for all customers with a Service Agreement
- 24/7 Emergency Services
- Factory Certified and Trained Technicians
- Software Upgrades
We give you options.
We take great pride in offering customers the ultimate freedom of choice in products and service providers. We use off-the-shelf, IT-centric, building automation solutions where integration is seamless and cost effective.
Hear what Our Customers Say…
“MacDonald-Miller implemented a software platform that allows us to create energy baseline metrics for each of our buildings. This tool gives us a way to measure the energy performance for our entire portfolio in real-time. Energy monitoring is better for building performance, and it’s better for our bottom line. We see cost reduction through energy savings. It saves KCLS money by reducing energy consumption, improving performance, and saving time and resources.” – Greg Smith, King County Library System
Montgomery Park
Plymouth Housing Group
Hyatt Regency
Bellevue City Hall
Seattle Central College
Lakeside Condos York-Shipley Boiler
Leatherman
Columbia Sportswear
Lincoln Square – Expansion Phase 2
Bellefield Office Park
Washington Athletic Club
AGC Electronics America
Highline College
FLIR
Lake Road Medical
Key Center
Avalara Hawk Tower
Microsoft Thermal Energy Center
Seattle Aquarium
Union Stables