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Recent Articles

Refrigeration: CO2 cascade systems for sustainability

By Phil Boudreau

HFC refrigerants and ammonia are currently the mostly widely used refrigerants in commercial and industrial applications. HFCs became the refrigerant of choice due to the ozone depleting properties of CFCs and HCFCs.

In recent years, the global warming effect of HFCs has also been… Continue Reading

Heading up to the Attic

By Gord Cooke

On a hot summer day, can you think of any worse place to be than in an attic? Well, as I crawled my way through the cramped, dusty, blazingly hot 100-year-old attic of my brother’s house last summer, a couple of thoughts came to mind that are perhaps of interest to mechanical contractors.… Continue Reading