Brew a lager without a refrigerator, and use your current fermenter.
The LagerJacket is the world’s smallest, most energy efficient, all-in-one lagering device. In a 70 degree house, it brings the temperature of your fermenting beer down to 35 degrees, or 50 degrees in a carboy. It unlocks a world of beer styles previously unavailable to homebrewers lacking the physical space or desire to own another refrigerator. An intuitive immersion cooling device, The LagerJacket sits atop your current fermenter and maintains a precise temperature, digitally set by you, for as long as it is plugged in. The precision offered by The LagerJacket is unlike anything currently available to the homebrewing world.