Multistack, LLC Employee Directory
Machinery ManufacturingWisconsin, United States51-200 Employees
Multistack, LLC is a mid-sized machinery manufacturer based in Sparta, Wisconsin. The company designs and builds modular and conventional chillers, along with modular geothermal and air-to-water heat pumps, and dedicated heat recovery chillers. Its products are positioned to deliver high efficiency and lower environmental impact by using safer refrigerants and alternatives to fossil fuels. Multistack originated the modular chiller concept and continuously pursues product innovations driven by customer input, including specialized chillers for defense applications. The company has advanced oil-free magnetic levitation compressor technology to support its chillers. In early 2025, Multistack participated in the AHR Expo and presented a CO2-based hot water heat pump concept.