Convoluted counterflow chiller (5/8" diameter inner tube with 1/2" NPT female fittings already attached, male/female water hose connections)

Convoluted counterflow chiller (5/8 inch diameter inner tube with 1/2 inch NPT female fittings already attached, male/female water hose connections)

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We use and recommend a copper convoluted counterflow chiller (shown in picture) over immersion chillers and plate chillers as we feel they are the best compromise between performance and ease of cleaning while minimizing limitations on how or what you can brew. With a counterflow chiller small portions of wort are chilled instantaneously from boiling to yeast pitching temperature. This helps lock in hop flavour and aroma and limits excessive dimethyl sulfides (DMS) which can cause a 'cooked corn' taste and aroma in beer. For complete details see our Wort Chiller guide.

A stainless steel version may also be available from some sellers, though some brewers have indicated it is slower at chilling. This makes sense as stainless steel has a lower heat transfer coefficient (i.e. is less efficient) than copper. This different will be most noticeable when there is a great difference between the two fluid temperatures (as is the case with how a counterflow wort chiller is used to chill boiling wort using cold tap water). This difference in materials performance is negligible however with our stainless steel HERMS coil as the two fluid temperatures are only a degree or two apart.

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