The Sigma Corporation was founded in 1997 and is located in Mississauga, Ontario, Canada. Sigma manufacture are full line of commercial and industrial hydronic heating and cooling terminal equipment. Sigma offers both standard items (such as Unit Heaters and Wallfin), as well as customized items such as specialty Fan Coil Units and Greenhouse Hydronic Equipment.

Brand Details

Today Sigma operates out of a 82,000 ft2 building with a team of over 120 skilled employees. This team includes a dynamic engineering department dedicated to continuous product improvement and the development of the next generation of Sigma products.


  • Wallfin (Standard and Custom)
  • Convectors
  • Unit Heaters & Force Flows
  • Radiant Panels
  • Valance Heating and Cooling Units
  • Custom and Specialty FanCoils
  • Greenhouse Hydronic Equipment

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