I got my larder fridge for free from FaceBook or Gumtree, Ā£30 for a wifi InkBird, Ā£20 for a 40W tuber heater. Small hole in the side for the tube heater fleet and it was good to go.
Benefits of a fridge are the low temps available, mine will freeze the beer during a cold crash if I'm not careful, even in my shed when the ambient temp is 20 or 25. I'm not sure the Peltier units in the Ferminator will manage that.
Also, with a larder fridge, there is space for my FV in the top half and the receiving keg in the bottom, I connect them up during fermentation using the CO2 produced to push out StarSan from the keg. Then, when it's time to keg, I have a purged keg waiting at the same pressure as the FV, link the two together with a couple of jumpers, one gas and one liquid, pull the PRV a bit on the keg and it does a closed transfer under gravity.
When not being used for fermenting then it is a useful overspill fridge for parties or for lagering.
I keep on thinking about moving to an SS FV with glycol but cannot see any benefits in terms of space or temp stability.
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