That's weird: in Denmark, I guess temperature would go above 19 degrees about 6 months a year. That means that buildings are built with the expectation of being warmed...
I think most buildings are build with an expectation of cold in the winter. Building for warmth would result in burst pipes during winter, when the temperature goes below freezing
I might be in for a surprise, but I don't think there has been a year where the temperature has been above 19 degrees for six months of the year. I'm curious if you have a source on that?
> That means that buildings are built with the expectation of being warmed...
That doesn't seem strange to me. At even lower temperatures, water pipes will burst, so you have to heat it at least a little in winter. Waste heat from humans might be enough to avoid freezing temperatures, but then humans also produce a lot of humidity, causing mold.
