Are you looking at buying "CSA approved solar collectors". This article explains what is now in place in Canada regarding Solar Water Heating.
The end of the EcoENERGY program.
The residential and commercial Eco ENERGY incentive programs are ending soon, 31st March is the deadline, after that, as far as we know there are no more Federal Solar Water heating incentive programs going to be announced anytime soon. There are a few provinces that have some local or provincial incentives still running but these are few and far between.
For the past few years, a list of the collectors that were acceptable to receive the incentive was maintained by NRCan. The NRCan list said that all collectors on this list "met CSA Standard F378-87 or equivalent". Latitude51 Solar were one of about 90 companies with a few collector models each who were on this approved list.
Note this line: it is important and has significant relevance later when the CSA basically admitted that NON of the Collectors on this list can be classed as "CSA approved"