Depending on your configuration and insulation, you can increase the temperature of your ferment from 5-20 degrees Fahrenheit. This differential can be increased by using our carboy bag to insulate a carboy (this has been tested). To decrease the temperature differential, stick only a portion of the FermWrap to the fermenter.
With 40 watts of heat spread over almost two square feet it provides gentle even heating. Draws 40 watts. 115 V. For greater results, we recommend a temp controller and carboy thermowell for the ultimate in fermentation temperature control. Or for the best control, use the dual stage control and carboy thermal well, as well as a refrigerator, to control both the high and low temps.
This is the original FermWrap(TM) manufactured and wired by Fermentap in the USA.