FE650-40 Watt Fermentation Heater

We are using this for our kombucha with a temperature controller, and has been working perfectly!

I bought this for a more narrow plastic fermenter I occasionally use. I have the larger style with the Velcro but it’s too long for an average size fermenter. Besides having to use tape to attach this, it performed well on its first batch and did not hurt the plastic fermenter which is what I was worried about.

It isn't apparent from the picture or description, but this doesn't fit around a standard 5 gallon carboy. In fact, it doesn't even go all the way around my 3 gallon carboy. I suspect the picture actually shows 2 of these, one on each side. However, it still heats well. I have one holding my 3 gal carboy at 70 degrees in a room that gets as cool as 64 degrees, and it isn't on all the time so I suspect it could easily heat it past that temperature.-----UPDATE:I ran a test and put 3.25 gal of water in a 5-gal plastic ale-pail, put this wrap around it, and let it run for a few hours. My water was at about 82F out of the tap when I started, and the ambient temp of the room was 69F. The single FermWrap was able to raise the temp of the water in the bucket to 98F before I called the test quits. Temp probe was submerged in the middle of the water. Pretty impressive!Based on this, I raised my rating to 5 star.

Good price with on time delivery

I use this heater to keep wine carboys warm. The winter nights in Florida can get well down into the 50's. The heater fits into my foam lined enclosure and uses up no space. The inkbird controller has no trouble controlling the 40watt heater.

This warming pad is amazing. I paired it with the insulation jacket for my Fermzilla and I can keep my fermenter at a constant temperature even when the ambient temperature has been as low as 41 in my garage brewery. I have had the temperature as high at 79 so far on a cold winter night. I used blue painters tape and an ink bird thermostat and life is good. Can’t better this for the price.

I attach mine to my fermenters with reusable vinyl tape. Works fine and doesn't fall off. I've tried masking tape, and it seems to release every few days and required re-application.My basement is at 55F ambient. The thermometer pulled out of the thermowell, resulting in the heater running for 24 hours strain. In a 55F ambient basement, it heated the wort up to 91F. That's a 36F increase! Of course it ruined the batch, but goes to show just how well this performs.Do not be alarmed if you feel this wrap on the fermenter and parts of it are not warm. Those are spots where the fermenter is absorbing heat effectively. It's to be expected and is not a defective unit.

Absolutely NOT good for brewing heating, after first use its stopped heating, waste of money