I already have the S9 Space Heater.

It's fit for purpose. D-Central did a great job with the refurb, silent fans, and sourcing the cryptocloaks case.

Next level would be the S17 or S19. Maybe they go on sale after the halvening, that window of a year of so when the block reward has dropped but the fiat price of bitcoin hasn't caught up.

Let's see what the future of pleb office temperature control holds.