I'm starting a Sous Vide project and I didn't find any information about Temperature Accuracy. I really would like to know how accurate must be the temperature sensor in Sous Vide. I found some DIY Sous Vide that uses DS18B20 with 0.5ºC accuracy, will it be enough or Sous Vide must require better accuracy such as we can find on commercial products.

  • Welcome to the site @AntonioBorges. Who says commercial products are more accurate?
    – GdD
    Mar 2, 2018 at 9:16

1 Answer 1


Most home kitchen immersion circulators advertise that they are accurate in the .1 to .3 degree F range. Practically speaking, if you were considering a home-made device, you can easily get away with less accuracy than that. So, .5 would be just fine. In a pinch, I've used a pot of water and a thermometer, turning the gas on an off. Not very convenient, not very accurate, but it can work with close monitoring. By the way, I do sometime set my circulator to .5 degree increments, but, honestly, that's probably more obsessiveness than is required.

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