Revisions log for Answer #2465

Do you really understand the importance of insulation? So, what's the overall impact? We have four floor-to-ceiling doors just under 2m wide and a window almost a room high and 4m wide. This increases energy loss.

Simply put: you buy a super insulated house and then lose the energy saved by the window façade. The large surface area also makes a big difference.

It also matters what makes you cold in the winter, becomes warm in the summer. Very warm. So heat shielding, roller shutters or exterior (automatic) shading is a huge problem. (Or air conditioning) Both cost money.