PremiStar Acquires Rabe Environmental Systems

PremiStar Acquires Mercury Mechanical

February 15, 2024

HVAC & Mechanical

PremiStar, a PE-backed commercial HVAC, plumbing and building automation platform, has acquired Mercury Mechanical, a full-service HVAC, sheet metal and piping contractor based in Northlake, Illinois. The acquisition expands PremiStar’s footprint in the Chicagoland area, Illinois and southern Wisconsin and brings Mercury Mechanical’s commercial, industrial and healthcare customers into PremiStar’s platform.

PremiStar Acquires HVAC Services Division of Dahme Mechanical

March 4, 2025

Industrial Services

PremiStar has acquired the HVAC services division of Dahme Mechanical Industries, Inc., based in Countryside, Illinois. The deal moves the division's employees and commercial HVAC customers into PremiStar’s Frankfort, IL operations and expands PremiStar’s service capabilities in northern Illinois and northwest Indiana.

PremiStar Acquires Air Temp Mechanical (CT)

January 21, 2025

HVAC & Mechanical

PremiStar has partnered with Air Temp Mechanical, Connecticut’s largest independent commercial HVAC contractor, adding the 188-employee company to its national platform and expanding PremiStar’s footprint to 16 states. Air Temp Mechanical (founded 2001, led by Jeff Leone) provides HVAC installation, maintenance, building controls, plumbing and sheet metal fabrication to education, commercial/industrial, healthcare and government customers.

PremiStar Acquires SI Mechanical

June 12, 2024

HVAC & Mechanical

PremiStar, a commercial and industrial HVAC, plumbing, and building automation platform, has acquired SI Mechanical, LLC, a full-service HVAC and plumbing contractor based in Creedmoor (Austin), Texas. The deal expands PremiStar's footprint in central Texas and brings SI Mechanical's local leadership and customer base (education, healthcare, commercial/industrial, and datacenters) into the PremiStar platform.

PremiStar Partners with Trademark Mechanical to Expand into New York City

January 15, 2025

HVAC & Mechanical

PremiStar has partnered with Trademark Mechanical, a commercial HVACR and controls contractor based in Elmsford, New York, marking PremiStar’s first expansion into the state and extending its national footprint into the New York City metro area. The deal brings Trademark’s team and customer relationships into the PremiStar platform to support growth in commercial/industrial, healthcare, education and property-management end markets.

PremiStar Acquires Smith's Refrigeration

October 21, 2025

HVAC & Mechanical

PremiStar announced that Smith's Refrigeration, a full-service mechanical contractor based in Lumberton, North Carolina, has joined the PremiStar family of companies. The acquisition expands PremiStar’s HVAC, refrigeration and mechanical capabilities in North Carolina and South Carolina and strengthens its service coverage across healthcare, senior living, education, manufacturing and government end markets.