Boiler Specialists

We can design and build complete boiler rooms from scratch. We offer the customer the best solutions possible with today’s technology. MacDonald-Miller has the depth of experience to be able to provide a full service solution to the boiler house because we have full-time pipefitters, sheet metal workers, and boiler specialists who think outside the box. We are proud to be named the Northwest Authorized tech center for Autoflame combustion controls and Limpsfield burners. Alaska included!

  • Boiler Specialists
  • Certified Trained Technicians
  • Quick Response 24/7
  • Boiler Repairs & Service
  • Burners & Control System Repair and Replacement
  • Controls Safety Device Testing (CSD-1)
  • Annual Insurance Inspections
  • Combustion Analysis & Adjustments
  • New & Used Equipment Installations
  • Pumps & Piping Systems – Steam, Fuel, Water, Etc.
  • Deaerators, Feedtanks, & Economizers
  • Retubing & Refractory Repairs
  • Low & Ultra Low Nox Control Systems
  • Custom Design Solutions


Chiller Specialists

MacDonald-Miller Facility Solutions offers customers the best possible chiller service with today’s technology. Our industrial chiller team spans throughout Washington and Oregon providing quick response time. Our certified technicians provide Maintenance, Service, Retrofits, Installation, and Energy Conservation Upgrades for all your building’s chiller needs.

  • Chiller Specialists
  • Certified Trained Technicians
  • Quick Response 24/7
  • Control Panel Retrofits & Starter Upgrades
  • Energy Retrofits
  • Balancing Services & Vibration Analysis
  • Eddy Current Testing
  • Tube Cleaning
  • Oil & Refrigerant Analysis
  • Evacuation & Dehydration
  • Motor Insulation & Testing
  • Emergency Services & Repair
  • Retubing

Central Plant Optimization


Too often central plants are controlled to do only one thing – maintain a constant water temperature.

This simple task frequently misses the opportunity to maximize the operational performance of the plant. As experts in chillers, boilers, controls and system performance, MacDonald-Miller can operate your central plant at maximum efficiency 100% of the time. We do so by combining our systems knowledge with Iconics continuous commissioning analytics and visualization reporting software.


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What makes a central plant run perfectly? We do.

Contact us today!

We make buildings work better.