"Well insulated" means different things to different people (and in different climates.) A mere 11" of fiberglass in the attic wouldn't even make current code-min in much of New England. The 5.5" batts on 2x6" construction would meet current code if they're a high density type, but the typical R19s wouldn't make the grade. To me "very well insulated" means "better than code", not code-minimum, not that there's anything wrong with the current code minimums. I suspect the code-min for Calgary is about your level of insulation, which is fine, but it doesn't come with braggin' rights. ;-)
Your attic venting scheme is probably doing more for cooling the conditioned space than the furnace-fan (which is still behaving as a 600-1000W space heater, after all.)
Your attic venting scheme is probably doing more for cooling the conditioned space than the furnace-fan (which is still behaving as a 600-1000W space heater, after all.)