Very effective for cold climate/weather, not so mach for heat.

I did this for the windows on an old 1920’s cabin in BC, the walls and roof cavity had been retrofitted with insulation, leaving the windows as the big heat loss spot during winter. Didn’t fix how cold it go inside during winter completely, but it did bring the unheated temp up a degree or two, which made heating and keeping a temp easier.

Summer, OTOH, it created a heat pocket that radiated more heat inside, so I did a covering for outside with light coloured heavy fabric (curtain fabric) for the outside.

Australia: I don’t get it either.

I put off the switch for ages due to similar reasons, tried once that failed horribly. Later had a motherboard failure and Microsoft showed their whole arse. Reactivated the dual boot, channeled my inner old woman energy, solved the video issue and have been happily tinkering with the smaller issues as they come up. Still playing whack a mole, but now I’m getting things the way I want them, instead of disabling things I’m being told I want by some corporate nutcase.

And hilariously, I am spending less time maintaining Linux than I did for Windows.