Kombucha Heating Wrap, Kombucha Jar Heat Wrap with Digital Temperature Control and Timing Function, Fermentation Heater Carboy Warmer Fits Most Fermenter Vessels 1 to 3 Gallons

We use this for our one gallon kombucha batch brew. It works as advertised and keeps our kombucha warm, happy and tasting oh so fine! From what I can tell there is no temperature differential setting so once it drops any fraction of an amount below the set temp it will trigger it to turn on/heat. So I do notice it turning on and off quite often, but haven’t seen a noticeable change in my electric bill so no sweat off my back. I had bought a more expensive one (prior to finding this one) that does the same thing, but it seems to have a 2 degree differential so it turns on less often, and it isn’t as easy to install or read. This one however takes the cake! It’s SUPER easy to install, use and see the current temperature. I will also note it would easily fit around our 2.5 gallon continuous brew as well.

I brew small scale (<2 gallon) test batches of beer. I've successfully used a simple kombucha heating wrap that only had High, Medium and Low settings for a couple of years (while not an accurate temperature control, it proved good enough for what I needed). Wanting to brew with kveik yeast as well as start kettle souring, I bought this heating wrap to maintain fermentation temperature at 100F. I tested this wrap on my 2 gallon fermentation bucket filled with water with the thermocouple taped to the outside of the bucket in an area that was not covered by the heating wrap. Setting the temperature was not difficult, but the instructional sheet is not overly helpful in this regard. However, I am familiar with other brewing temperature controls so figuring this out was not difficult. Once set, this wrap did a great job heating the fermentation bucket to the desired temperature (100F), which I confirmed by measuring the temperature of the water in the center of the fermenter using a thermometer. For my fermentation bucket, I had a 3 degree Fahrenheit differential between the temperature of the water in the center of the fermenter (which was 3 degrees warmer) and the temperature the thermocouple sensed. All I had to do was adjust the controller to 97F and it successfully maintained the temperature of the water in the center of the fermenter at 100F. I have since successfully brewed 2 batches of beer with kveik yeast. This heating wrap has obsoleted my old one and upped my brewing game!

I needed something to keep my sourdough starter nice and warm since our house is always cold due to the AC. This worked perfectly. It's a little bulky but kept the sourdough to the perfect temperature and helped it grow where it needed to for me to use.

I just got into brewing Kombucha, and realized I chose a bad time to start trying to brew. It's too cold right now in my house, and I initially tried just wrapping my brew in a towel... but I hadto keep unwrapping it to check the temperature. With this heating wrap, I can adjust the heat on the fly, and the LED tells me quickly and easily what the temperature is. Definitely made my brewing life easier!

I bought this heating wrap to keep my kombucha fermenting at a consistent 74 degrees. I initially set the thermostat to 74, then checked the kombucha with an instant read thermometer the next day, and it registered at 90 degrees! I turned the thermostat on the heater down to 68 to try and control the heat, but it overheated the kombucha to 117 degrees, effectively killing the SCOBY and wasting more than 30 days of work. I would not recommend this product.

I keep my house quite cold in the winter so I needed something for my scoby to live in that would be warmer. This is exactly as advertised. I've made a couple of successful batches at this point and am very happy with the results

Really love these warming mats. I am using the 2.5 Gallon jars for kombucha and these wrap almost all the way around - and I like that I can put a temperature strip down the middle where the mats do not completely cover the jars. So far the temps are very reliably steady with keeping things where I want them. We got this because it has the digital temp probe which is so much more accurate. The shipping is great and they are very well packaged. I would recommend these to anyone wanting to have a reliable and steady temp for kombucha.

This product works great, but I have a large 10F difference in temp between the top of my 1 gallon jug and the bottom. My jug has a spout, so the wrap goes right around the middle of the jug. It's no fault of the product, it just seems that a center wrap is not working to maintain an event temp from top to bottom. I'm seriously considering a switch to bottom heating pad. I was initially concerned that a bottom pad would fail to keep the jug warm enough, but now that I see the challenge in maintaining event temps from top to bottom I'm re-thinking that.Update: I've now switched to a bottom pad and it's providing a much more even heating across the jug top to bottom.