I remember going to open days when choosing a middle school when I was about 9, and the head teacher proudly showing us the slipper/plimsole that he used to punish naughty kids. I think that sort of thing got banned fairly soon after, thankfully.

What’s MVHR?

What make/model are we talking? I thought the portable ones weren’t supposed to be all that great, and quite noisy? We’ve been making do with a big floor standing fan, but it only does so much.