Kombucha Heater | Fermentaholics Kombucha Brewing and Fermentation Heat Mat | Keep Your SCOBY Happy and Productive by Brewing in The Proper Temperature Range

Great product. Keeps my kombucha between 76.8-77.8. Perfect brewing temperature. Fits my 2 gallon glass brewing jars perfectly. They are preset so no need to adjust temperature.

This seems to keep the kombucha at an acceptable temperature, although I think being able to select what one believes to be the perfect temperature would be great. I wish this had variable temperature control, not only to select what I think is perfect but to also maintain a narrow temperature range. From what I can see, it keeps the liquid about 15 degrees warmer than the ambient temperature. I would love to keep mine within a few degrees, but because of this, it has a range of about nine degrees, because my home ranges that much. Again, it gets the job done so I have no complaints, but it would be nice to control it myself. Definitely worth the money and not worth returning to get one with control. Highly recommended if you want to set it and forget it, which certainly does have its appeal! I metered it and at sixteen cents a kilowatt hour, it costs about two cents a day to run. Also, the cord is quite long at right about six feet, which is nice.

We got mold on one of our earlier batches. The internet suggested it might be because our kitchen is too cold. Since we wrapped our continuous brew jugs with these we have not had that issue again. Had to figure out a better “stay-put” than a rubber band (we used garden stake velcro). But, the mat has helped our booch stay nice and happy

Perfect for my half gallon and 1 gallon jars of kombucha. The rubber band it comes with to wrap this around your jar doesn't work well, so I use a clip instead. The thermometer it came with broke after a week. The wrap is super simple. Nothing to do but wrap it around your jar, plug it in, your done. When it's cold in my house, I wrap a tea towel around the jar too after the heat wrap is secured on.

Great heat mat and as added bonus a thermometer strip. Fits almost around my 2 gallon jar. But that's ok, since no I can put the thermometer strip in between. I don't want to warm up my kombucha too much, since I can't drink it that fast :-). So I have it connected to a smart plug, where I keep it on longer at night (when we don't have the heat on) and shorter during the day (2 hours and 1 hour off at night, and 1 hour on and 2 hours off during the day). Energy consumption is low, 7.11 Watts at the moment. Also nice touch is the rubber band to keep it secured around the jar.

I am having trouble with this one (as have many others who have bought it. ) It doesn't hug the fermenting jar as it should, and as a result, it doesn't heat up much. I am looking for something that will warm up the brew in cold weather the way it does in warm weather. Tired of waiting 3 weeks! Wondering what to try next.

Love this heat mat, especially how it can wrap around the jar (with a rubber band to hold it in place). We like to leave the doors open when it is cool outside, but can be too cool for my kombucha batch so this speeds the process up and, from what I understand, reduces the risk of mold. The thermometer sticker is also super cool!

So I tried two of the heat mats on two one gallon kombucha vessels (one heat mat per vessel). I have Inkbird thermometers on both vessels and also used a handheld thermometer for measurement. I could not get the kombucha vessels to get higer than 64 degrees. Everything is in a room with a heater vent open keeping the room about 69 degrees at all times. I moved the heat mats to the bottom of the vessels for 24 hours and no change. I moved the heat mats to the middle of the vessels and again no change. Still could not get the heat mats to heat my kombucha vessels up past 64 degrees. I did not want to waste the kombucha as it was a in the first fermentation state so I had to use a heat pad that I use for muscle pain. It did the trick I was able to get the temperature up to a nice and steady 80 degrees. I did remove the Fermentaholics heat mats from the kombucha vessels first. I tested the Fermentaholics heating mats with a laser temperature gun and a handheld thermometer. Both tests gave me a temperature of about 91 degrees. Why the heat mats did not live up to the claims is beyond me. I can only guess since the heat mats are three inches wide they are not enough for keeping a one gallon kombucha vessel at a proper temperature. I will be returning the heat mats back to Amazon and purchasing a different brand. Something wider than three inches.Yes I have extensive experience brewing kombucha. I have been doing it for years and wanted to try out this product to see if it would help out my kombucha brewing. Turns out it just did not meet my expectations.