Fermentation Heater Carboy Warmer - Kombucha Heating Wrap with Thermostat for Temperature Control - Electric Heat Pad Belt for Home Fermenting & Brewing - Fits Most Fermenter Vessels 2 to 8 Gallons

I needed to wrap my carboy in a quilted shirt at first to get from 55 to 70 degrees, but after that it’s been great. Maintains temperature +/- 2 degrees F and seems to agree closely with other thermometers.

I'm using this as a heat wrap for brewing kombucha and it works great. Just set a temp and forget it. It consistently keeps my fermentor (I use a 3gal glass jar) within about a degree of set temp which is usually about 8 -10 degrees over room temp in my house. This was a must going into winter and it kept me in the zone even when the house gets chilly. I've checked it against multiple thermometers and mine runs accurate enough for my needs (about +/- 1 degree F).

My 2 gal. glass kombucha vessel is small enough to place in my house in a combined water heater and HVAC closet to help keep temperature of fermenting liquid close to the ideal 78-81 degrees for brewing. However, that vessel is now being used by my SCOBY hotel.So I bought a 4.7 gal. hammered glass vessel with nowhere in the house to keep it at proper brewing temp since the weather turned "cold" in late fall/early winter here in Southern California. The vessel is too large to fit in the HVAC/water heater closet. I turn the thermostat to our central HVAC down at night to at least 68, then up to 74 or 75 degrees during the day/evening. The is not warm enough to raise the temperature of my fermenting kombucha, which has been consistently 68-71 degrees day and night no matter how warm I heat the house to (as high as 76-77, but normally 74-75. Wrapping a heavy blanket around the vessel seemed to only keep the ambient temperature of the room out/away from the vessel.So I bought this Kenley Fermentation Carboy Heater with Thermostat - Kombucha Heating Kit and hooked it up yesterday evening. What a Godsend! I have the thermostat set at 80 degrees and while the temp on the thermostat fluctuates 1 to 1.5 to 2 degrees, it's keeping the adhesive strip thermometer on the outside of the glass in a very acceptable range of 78-80 degrees! Just what I wanted/needed. This is worth every penny I paid. My SCOBY has "taken off" in less than 24 hours!

Practical warmer now new works perfect fits my fermentation pot

I was hesitant to try this, but am pretty happy with it. I am considering getting another one. I ferment beer and wine in my garage in Alaska, and to save heating costs I keep the heat low in my garage. This has really helped me keep carboy temps consistent. The temperature controller seems to lag a bit on shutting off the heat, I suggest setting it about 2 degrees cooler than you want. Yesterday I put an old fleece jacket over the carboy with the heater and sensor under it, this seems to do better, but the carboy temp is still a degree or two over what I have set. This seems consistent and is easy to compensate for.The only real complaint I have is the rubber bands that came with it to wrap around and secure the heater to a carboy sucked and I threw them away almost immediately. I have been using duct take to keep the heater on a carboy.

This was a game changer for me for brewing.. In the winter, the space I ferment in tends to get on the cooler side, 45-60F(7-15.5C) and higher ABV ferments even with the right yeast can stall out. The jacket was a perfect size for a 6 Gal carboy with a small gap. They provide two straps for holding it onto the carboy. If you tuck the thermocouple into the strap, away from the wrap in the gap, it measures the temp just fine. It's not necessary to use a through cork probe.I did Wrap the whole carboy in a blanket for temp control, the wrap is only 45 watts, so in a really cold space, it was struggling to keep the temp at 70F(21C), I wrapped the whole fermentor with a blanket, it was set to 70F and held 70F with only minor cycling in a brewing space that was 50F. Sped up the fermentation quite a bit, and the tastes are good so far on my brew...

Have made three batches of wine. Keeps temp close to target at all time.

I love this wrapped heater for my beer fermenter carboy! Simple to set & I love the bright display showing me the current temp of my beer (outside thermostat taped mid carboy in gap between heating sheet ends). I'm using 6 gallon polycarbonate carboys and the heating sheet almost wraps completely around. I've swapped out the fabric elastic bands with silicone bands for cleaning purposes. After using this the first time, I immediately ordered a second unit.