Your Building Partner.

We’re here to make your life a lot less hectic, a lot more productive, and deliver true peace of mind. We perform regular inspections and maintenance of your building systems to ensure a greater level of operational excellence. We test, align, calibrate, and record performance to ensure your building’s equipment quality and reduce downtime or emergencies. When it comes to expert HVAC service & maintenance, we have a dedicated team that is proud to be a part of the Oregon landscape.

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3 Ways to make your building better.

Smart Building Maintenance

We turn your existing system into a smart system so you can focus on more important things (like how to spend your new found operational savings).

Automate Your System

Stay in control of your operations with unified building automation. Operate your facilities at peak efficiency and maximum comfort by integrating all mechanical, electrical, safety, lighting, video, and card access into an operations center.

Request an Audit

The more you know, the more power you have to make informed decisions. Find out how a preliminary audit or investment grade audit could show areas for improving equipment functionality and decreasing costs of operation.

Local Projects

Moxy Hotel

Moxy Hotel

MacDonald-Miller brings HVAC design-build services to downtown Portland. This new hotel tower in the center of downtown Portland includes 12 stories above grade and a single-story basement. It boasts 197 guest rooms and retail space. Graves Hospitality, is the developer with Howard S Wright as the general contractor. The Moxy Hotel is a relatively new brand…

WeWork, Tenant Improvement for Historic Portland Building


For this 3-story tenant improvement project in Portland’s historic Power and Light Building, MacDonald-Miller had to respond quickly to propose, design and immediately start work to accommodate WeWorks’ tight deadline. Our HVAC scope of work includes a 4-pipe heating hot water and chilled waterfan coil units. We will implement in-house Honeywell controls, and the design…

World Trade Center – Chilled Water Plant

At MacDonald-Miller we work together as a team to provide our customers with the best services and care! One of our clients maintains a Chilled Water Plant that is vital to our city’s power grid. When our team consulted with our client, we identified an opportunity to improve system performance, longevity, and energy savings by…

Montgomery Park

Montgomery Park

The 850,540 square foot Montgomery Park is a commercial building in Portland, Oregon, housing approximately 26 tenants with about 3,000 people occupying the building during an average workday. Work included condenser pumps, supply fan VFD’s, and variable fan speed (Catalyst) on all large tonnage heat pumps.  Through bill savings from the lighting upgrades and Energy Trust…

Oregon Energy Auditor

ODOE Energy Auditor

MacDonald-Miller is proud to be an ODOE (Oregon Department of Energy) Auditor on the list of Qualified Contractors that can perform Energy Auditing for Schools in Oregon!

Oregon works better with MacMiller

We want the environment to be a non-issue, something people don’t think of, they just come to work and know they are going to be comfortable. MacDonald-Miller knows the quality level that we need here. I trust them 100%.” – Warren Larson, Facilities Supervisor at Synopsys

What can we help you with?

We make buildings work better.