July 7, 2010 by fhsteinbart
As we get into those hot summer days many brewers have trouble keeping there fermenters cool. While fermentation temperatures in the 80s will make great saison, they also make a pale ale taste like banana fruit salad especially if the temperature spikes during the first 3 or 4 days of fermentation. Here are a few ways to keep your fermenter cool during the summer.
Place your bucket or carboy in a water bath and place an old t-shirt around it. Put a fan on your carboy. Water will actually wick up the shirt and evaporate causing evaporative cooling. This should get you a 4-5 degree temperature drop. Works best when humidity is low.
Place your fermenter in a water bath and throw cold packs or jugs of ice in the water. Change out your cold packs or jugs 1-2 times a day.
Make a cold box using a spare fridge or freezer and a Johnson controller (we sell these for about $65). The Johnson controller is really easy to install and gives you a dial setting for your temperature. This is the most reliable option but is also the most expensive. This can also be done with a window AC unit and an insulated box.
Keep Your Fermenters Full.
-FH Steinbart Co.