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Preferred Mechanical Insulation Minnesota

Established in 2018
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Proud to be Minnesota’s only Women Owned insulation contractors through the City of St. Paul.

Founded in 2018, Preferred Mechanical Insulation (PMI) is the Midwest’s leading Union mechanical insulation contractor. Our team boasts over 25 years in the insulation field and has installed complex projects across all industry verticals and customer applications. PMI’s team will design, fabric, implement and maintain all types of mechanical/commercial/industrial insulation solutions.

Preferred Mechanical Insulation is here to serve you with optimal customer service and safety. 

We take every precaution to make sure that we serve your business with as little direct contact as possible and have the equipment gear to keep you and your team safe. 

You'll find us to be prompt and a partner in your business when you need insulation.

With the ever-changing climate of Minnesota, we know it is important to wrap your pipes with the right materials to keep things flowing at prime performance. 

You can count on us because you matter to us.

Talk to us today for a quote or to get additional information.


Our Services

Experienced - Qualified - Locally Owned in Minnesota
  • Chilled-water Piping

  • Refrigeration Piping

  • Plumbing Piping

  • Mechanical Rooms (Pumps, Tanks, Boilers, and other Equipment)

  • Sound Applications

  • Steam, Condensate Lines and Hot Water Heat Piping

  • Process Piping

  • Tanks

  • Pressure Vessels

  • Reactors

  • Boilers

  • Breachings, ID Fans and Stacks

  • Baghouses

  • Commercial Application Systems

  • Cryogenic Piping and Equipment

  • Fire-Rated Grease Ducting

  • Turbines

  • HVAC duct

  • Maintenance and T&M


Industry and trade partners

Preferred Mechanical Insulation is proud to be a part of these organizations.

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The Central Certification (CERT) Program is a small business certification program recognized by Hennepin CountyRamsey County, the City of Minneapolis and the City of Saint Paul. The CERT Program certifies small businesses, including small Minority-Owned Business Enterprises (MBE) and small Women-Owned Business Enterprises (WBE). The CERT Program also certifies Emerging Small Business Enterprises (ESBE), which are a subset of the small business marketplace.

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