Comment Re:What is a "Check"? (Score 1) 169
In a minimum energy building, there are almost no windows that open, by design. Obviously not a design that took things being hot for a longer time into account. It is great for winter, with much, much lower heating cost as the internal air exchange system comes with a really good heat exchanger and things do not get stuffy in winter at all. But with a longer heat-wave, the design becomes less suitable.
The one window I have is in a place where I cannot use it for this purpose. I have two doors to the roof terrace and I use one for the AC, but that comes with a host of complications. I do have these under control, but it did require some ingenuity and some experimentation and measurements.