I e-mailed Master Flow, available at homedepot.com, and they are not available here (.ca). So can anyone tell me who or where to try to get one in Toronto. Reversomatic is supposed to call me back but the sales desk had to refer me to a rep. I have a few possibilities in mind that I clipped from HVAC websites (Honeywell, Carrier, Ducane, Keeprite) , but they aren't flying off the shelves I've seen.
Have you tried calling real supply houses in your area?
Whole house fans are not popular in the Toronto region for a number of things. They are mostly used to draw cool night air into houses through open windows and exhaust the hot air out through the attic. In Toronto, the night air while it is cooler than the daytime air, it is usually very high in humidity and that is not what you want on a hot summer day. Also the air intake for the fan in the ceiling of the upper floor is difficult to seal to prevent water vapour and heat from leaking into the attic space. The water vapour will cause the interior of the attic to form frost and can wet the insulation, the heat loss makes it harder to heat your house and will waste a lot of money.
If you really want to purchase one, you may have to do what many people do who want "available in the US only" items, order from a supplier who will ship to Canada and import it yourself. It is easy to do, the courier will process the paperwork and bill you for the cost, taxes and any duty. UPS Ground being the most expensive to use for importing with excessive brokerage fees.
I have a hole in the ceiling already in the perfect place - a red squirrel. I would be happy if this works just for a few degrees for a couple months a year: this is an absolute quest, and would be better than a/c and work for longer . I understand what you are saying about being able to seal it up is important, though unless you advise otherwise I am assuming good work and the right products and this can't be too hard, right.
Now, that's funny!
Try Ebay. Nost will ship to Canada.
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