The Carboy Heater
The Carboy Heater is a small heating wrap that is stuck directly to the fermenter to increase heat by 5-20° F. This heat wrap distributes 32 watts of heat over an area of 2 square feet for a very gentle heat. Use electrical tape (recommended) to adhere to your carboy, plastic fermenter, or even your conical! For ultimate control of your fermentation temperature, use in conjunction with a stopper thermowell and digital thermostat.
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Heater works as expected and is a great value.
These work excellent for tempature controlled Fermentation, and at the price they are a no brainer.
OK, so it looks and feels kind of flimsy, but I'll tell you, it did exactly what I needed it to do, and instead of hassling with all the other ways I used to keep my fermenter warm (13 gallon stainless steel variable top), this has been hassle free; for that I'm grateful and thus give it a 5 star rating. My garage has been in the 30's (outside it's in 20's) every night. I simply put two old coats around the fermenter on top of the wrap, and it does the trick; no other worries. I'm glad I got it; hope it continues to hold up. If it works for just two years, I will have felt that the $ is well spent.
This is a great addition, very functional. It even works well on a SS Cronical although hard to wrap around it with the legs and handles in the way. It took less than two hours raising the temp from 65F to 71F on a carboy as pictured. I am very pleased with this.
This thing in combination of a thermowell and Inkbird keep my fermenting ale wort within 1 degree of the set temperature in the cold Ohio winter with ambient air temp in the mid to low 50's. I use this on my 6 gallon glass and plastic carboys. My only concern with this product is the way the cables are attached to the heat wrap--they feel like they can be easily damaged and broken, so be careful!