A close up look at three retrofits.

Gives brief details of three ventilation retrofits that showed good results. The case studies are selected from a group of ten carried out by the Canada Mortgage and Housing Corporation. In each case temperature, humidity, and carbon dioxide were measured to assess levels of ventilation within houses in their preretrofit condition. The measurement were taken over a 2-3 day period with normal occupancy. Short-term monitoring was also used to measure the change inventilation with the house operating in postretrofit condition.