Eugene’s Top Choice.

Building managers & owners have enough to worry about, so let MacDonald-Miller take care of your HVAC needs. 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 dedicated HVAC service & maintenance, MacDonald-Miller is unmatched, and we’re proud to be a part of the Oregon landscape.

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What Customers Say

MacDonald-Miller has been extremely helpful in solving long-standing issues with equipment as well as giving us the peace of mind that we’re doing everything we can to keep our equipment running reliably for as long as possible. More than a couple times now, our tech has not only promptly fixed the issues that were tasked to him but also helped us identify issues that would become very problematic if left unfixed, which has helped us avoid future unexpected down time. – Ryan Johnson, King Estate Winery.

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).

Get Smart

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.

Energy 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.

Take Controls

SERVICE with MacDonald-Miller

  • Dedicated Account Manager
  • Emergency Services
  • Preventative Maintenance
  • Air Quality Filter Services
  • Building Performance Analysis
  • Commercial Boiler Services
  • Commercial Chiller Services
  • Plumbing Services
  • Electrical Services
  • Building Automation / Controls System Support
  • Standard Repair & Replacement Services

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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!

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What can we help you with?

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

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We make buildings work better.