I am currently conducting my master's thesis studying the HVAC market in Canada. As a part of the project, I try to map the amount of hydronic heating systems that currently exist. Since there is no statistics available about buildings in general and their heating system in particular, I try to ask the question here to see what people within the business can input:

How many buildings (total amount of square meters/feet, total heating power or equivalent) is currently heated by hydronic systems (only buildings heated individually by boilers, not covering district heating) do currently exist in Canada (or in any of the provinces alone. Any input is useful)?

Any recommendations of ways to acquire this information are very welcome as well!

Thank you!