Cargill Meats Canada
Cargill is an international provider of food, and operate many state of the art food processing plants around the world. Drennan Refrigeration has designed, built and serviced their London Ontario ammonia refrigeration plant since its conception in 1986.

Piller’s Sausage & Delicatessen
In the summer of 2004, Drennan Refrigeration began the design of an industrial ammonia refrigeration system for a brand new Piller's sausage manufacturing plant. This design included 3 - 200 hp ammonia screw compressors and 25 glycol-cooling coils servicing the entire production area. Two deep freezers cooled with freon units were also required to store finished product prior to shipping. This project was completed in Spring 2005 and the plant is currently in full production.

Wilmot Recreation Complex
The Wilmot Recreation Complex was built through the summer of 2007. It is a two pad arena known for having the best ice on the local junior hockey circuit. Drennan Refrigeration built a skid package in their fabrication shop with 3 reciprocating compressors and two calcium chloride brine chillers.

Cytec Industries Inc
Cytec Industries Inc. is a global specialty chemicals and materials company focused on developing, manufacturing and selling value-added products. Their products serve a diverse range of end markets including aerospace, adhesive, automotive and industrial coatings, chemical intermediates, inks, mining and plastics. Drennan Refrigeration supplied an ammonia chiller package to chill process brine to -16F. A PHE was used as a condenser to heat process water to 90F.