Small suggestion for your preorder buttons: the gray/white combo doesn't have great contrast and might be perceived as being in a disabled state. I'd recommend black/white on light backgrounds and white/black on dark backgrounds to make them fit with the (very nice) industrial design theme.

Our building (Western Canada) has a heat pump system and it's very capable of keeping the apartment comfortable in all seasons as long as your definition of summer cooling isn't "like being inside a fridge". Great to see the tech being developed for mass adoption.