Any chance you could make your stuff visible on some other service? I find YT increasingly unpleasant to use. Nebula is the one I already subscribe to, if you want direct income.

Bribe: I'll join your Patreon if you do it. I have zero problem giving you money. I have big problems giving YouTube anything including eyeballs.

I've heard Seattle gets pretty damp for similar reasons to Blighty. Maybe they're the ideal US target market?

Although TBH I've used a refrigerant dehumidifier in England with no problem whatsoever. The defrost cycle has to kick in every now and then in the winter but once that's done it's back to business as usual. (That was in an inhabited space though, not an unheated cellar.)

Now if instead of a little electric heater we could attach the pipe feeding hundreds of kWh at 60-70°C to a dehumidifier box, that'd be sweet for all the "cold and wet winter" countries.

Is that enough of a temperature rise?

Edit: found one, but it's for greenhouse-scale operations