Multistack LLC
At a glance
Employees100-499
In business sinceNot reported
HeadquartersSparta, WI
US patents4
SAM.gov UEIGYLDKFE322G5
CAGE code3E4Y1
Incorporated inMN
LEI549300XY2XSIBHCKBM07
- chillers
- MagLev solutions
- heating solutions
- direct drive plenum fans
- energy recovery products
- single wall steel cabinets
Named on the company’s own website, read JUL 29, 2026
What they make
CareersCareers page — seen SEP 8, 2026
Supplier designations
For Profit OrganizationManufacturer of Goods
Self-certified by the company in its SAM.gov registration
Patents
4 US patents granted 1989–2014, none of them in the five years to SEP 2025.
Thermal processes and apparatus 3Chemical engineering 1
- Double inlet heat exchangerUS 8,844,610 · granted SEP 30, 2014
- In-line fluid flow trap for modular refrigeration systemsUS 6,098,657 · granted AUG 8, 2000
- Apparatus for filtering a fluid in a fluid supply conduitUS 5,395,524 · granted MAR 7, 1995
- Modular refrigeration systemUS 4,852,362 · granted AUG 1, 1989
Granted to Multistack, LLC · PatentsView (USPTO), data through SEP 30, 2025 · CC BY 4.0
Their plant
| Facility | City | State | Employees | Status |
|---|---|---|---|---|
| Multistack LLC | Sparta | WI | 100–499 | ACTIVE |
Compiled from federal records — EPA, OSHA, SAM.gov and the U.S. Census — and from the company’s own website. Federal source data is public domain. Each plant’s page names the source of every field.