De
I think yer on the right track. One can have TOO much heat even in winter..
I am a colder weather kind of person so I prefer my indoor temp around 67 degrees. Miz micro on the other hand is someone who likes to slowly roast to a medium rare state..
So I simply open up the back door of the house which is on the very outside end of the house off the laundry room and allow cold air to seep in.. Its my way of cooling down even though I know the heat pump will work a little harder for a short time at least I will not be an edible roast....
We use a Carrier Heat pump to cool and heat our home. It works well in this climate.. Not as cold as yours gets...
I also love my utility bills as the high in the coldest month of last winter was $122. for all my electric, which is every appliance, water heater, everything in my house.
So I cannot complain.. The better yer home is insulated and you have really good windows that prevent wind from getting thru them, you will stay pretty cozy..
In my house I have well insulated outer walls, 20 inches in my attic, 8 inches under my main flooring, and the top rated and tested by government standards body triple paned, gas in between panes, vinyl double hung windows and a Pro Via entry door system which includes an storm door and insulated entry door. You can put a candle that's lit on the floor in front of my front door with wind blowing outside and the candle will not flicker... NO air comes thru my entry door system either so the home is easy to heat and cool without air loss...
I discovered a couple decades ago that all windows and doors are not created equal and that they were critical to the comfort level during cold winters and hot summers without breaking the bank for utility useage..
Our MArch, April, May and June electric bills are about 60 dollars.. Summer and fall are about 15 dollars mnore when we turn on the central air heat pump.
So make sure yer new castle is well insulated everywhere and you guys will stay nice and toasty with no drafts and heat yer new place with relative ease...