Why use a thermostat to control your brewing temperature?

Large fluctuations in temperature can cause problems with your yeast, resulting in off flavours. These off flavours can be inappropriate for the type of beer or wine you are making.

Subsequently controlling your fermentation temperature is the single most important thing you can do to improve your brewing or winemaking results. While a small degree of variation is nothing to be concerned about...large fluctuations are detrimental.

This can be done either by controlling a heating device (heat pad or heat belt) if brewing in cold situations, OR controlling a cooling device (fridge or freezer) in hot climates.

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