Immersion circulator manufacturer are historically laboratories equipment suppliers. Some of these suppliers have slightly adapted their thermal circulators to comply with sous vide cooking needs (refer to Molecularcuisine.org list and price comparison of immersion circulators). It is true that no cook need a machine that can heat above 100°C (212°F) as only water should be used for sous vide cookery. Some immersion circulators can even heat liquids at 200 or 300°C (392-572°F)!
Nevertheless the design of these machines dates back to the eighties and lab equipment manufacturers still have the “monopoly” of the sous vide cooking market.
It seems things are changing and, if the information is true, a new supplier enters the small club of sous vide cooking manufacturers. Contrary to some companies that only relabelled others products, Addélice seems to have designed its own immersion circulator. Addélice internet site is not very talkative
but indicates that their immersion circulator is a pure product from Addélice and will be price competitive. Addélice immersion circulator should be released mid August.
Wait and see…