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From aesthetics to performance

By Brian Paolucci The concept of protecting open doorways with an air curtain has gained traction over the last half of the 20th century and into the 21st, especially as the world became more energy conscious. Air curtains (or sometimes called air doors) consisted mainly of a rectangular metal box, motorized fan and air…

Unsophisticated test yields great results

A number of years ago, a colleague of mine and I were teaching building science in Russia to a number of contractors. The indoor air quality (IAQ) section of the training was provided by the Canada Mortgage and Housing Corporation’s (CMHC) research division. The division

Clean coils are the ticket to efficiency and longevity

When it comes to HVAC systems, those with the cleanest coils perform best. Maintaining them properly helps sustain maximum operating efficiency and keeps high performance equipment running smoothly. In fact, this is exactly why most manufacturers recommend routine maintenance

Mix of strategies helps boost ventilation in schools

The Cleaner Air for Schools (CAFS) program, an initiative between partners Nerva Energy Group, Mohawk College and Climate Change Leaders, is the winner of the 2022 Clean50 Top Project Award. CAFS was recognized for its success in increasing ventilation in Ontario schools by an average of 40 percent, while reducing greenhouse gas (GHG)…

Venting challenges persist in the field  

The flush mounted vent on the left tripped a vent-blocked sensor four times in one particularly cold winter in southern Ontario. The neighbour’s goose neck vent did not result in any shutdowns. It was possible the water vapour from the gooseneck vent was exacerbating the frosting...

The case for investing in the air we breathe

By Brian Fleck Here we are, 16 months after the world recognized that the SARS-CoV2 virus is a pandemic and we are still struggling to believe it and react. We are still hoping that vaccines will quickly eradicate this, and we will return to normal. There is a reluctance to admit that COVID-19 spreads through the air in…

Payback becomes more palatable

Electric heat pumps become a more viable option for commercial sites Identifying alternative energy sources has become a key objective for many organizations as they strive to decrease energy costs...