The same way an electric coolbox does, which is why it works off an ambient temperature.

It uses a Peltier module, terrible inefficient at converting current into cold.

Hi Kevin, that's a good question, i'm not sure on the dimensions of the brewbucket with the bubbler or plato on but here is a link to the dimensions of the main unit and then with the extra extensions added (scroll further down the page): www.brewolution.com/ferminator-basic.html

Pub Sheds how much clearance at the top with just a normal plastic fermentor (30L)

I've not got one of these, but I can be fairly confident that it will not fall apart. This kind of box is used by a lot of food delivery services in Demark and they pick up the empty ones off you on a new delivery, so they are reused loads of times in a much more harsh way than you would ever use this at home. It's not the soft expanded polystyrene you get as box packaging.

@@DannyMonaghan69 I spent 25+ years in Cold Chain distribution utilising all sorts of packaging. Yes, this is more rigid, but you catch something sharp down the side of it and it gouges mate. Such boxes are usually covered in cardboard - these are not. The hustle and bustle of a home brewery will cause something to happen on this for sure. As they are rigid - they are also more susceptible to splitting. I am not being a troll here, I understand the packaging very well - I think it is a good idea, but I don’t think it is worthy of the price, especially considering how much blow moulded poly costs per unit.

@@DrunkDelilahBrewery not got one of these, but i think the price comes from the heating, cooling unit. Otherwise you could just make this yourself with ice bottles and a pc fan. The temp unit is the reason for the price IMO.

@@theculturebrewingchannel5619 Yes but this is about £140 notes, the rest is blow moulded polystyrene - it is rigid and will not last too long. The Peltier Unit's are ok, but it needs a decent ambient - anything too high or low and it will struggle. They are not very efficient.