Keep your yeast happy and your ferment warm during those cold winter months with this flexible heater. Using tape to adhere this flexible heating wrap can be attached directly to your fermenter or can be used to heat the space in a box (or refrigerator) that the fermenter is in. Depending on your configuration and insulation you can increase the temperature of your ferment from 5-20 degrees Fahrenheit. If using carboy or bucket you can attach directly using tape (as seen in photo above.) We recommend electrical tape as it sticks and unsticks the easiest. Heating can be controlled by sticking either the entire wrap or a portion of the wrap to the fermenter. In an unenclosed environment we see a heating differential between carboy and ambient of 10-15 degrees. This differential can be increased by using our carboy bag to insulate a carboy To decrease the temperature differential stick only a portion of the heating wrap to the fermenter. With 40 watts of heat spread over two square feet it provides gentle even heating. Draws 40 watts. 115V.