FermWrap Fermentation Heater

FermWrap Fermentation Heater

Item currently out of stock

Keep your yeast happy and your ferment warm during those cold winter months with this flexible heater wrap! Don't be fooled by imitators and cheap knock-offs, this is the original FermWrap that has been produced by Fermentap for over a decade. Unlike those old heater belts, the FermWrap covers a wide area of your carboy or fermentation vessel, promoting an even heat distribution. Using tape to adhere, the FermWrap can be attached directly to your fermenter, or can be used to heat the space in a box (or refrigerator) that the fermenter is in. Depending on your configuration and insulation, you can increase the temperature of your ferment from 5-20°F. This differential can be increased by using the BrewBuilt™ Neoprene Carboy Sleeve.

With 40 watts of heat spread over almost two square feet, it provides gentle, even heating.

For more precise results, we recommend a temp controller and carboy thermowell. The controller will monitor the fermentation temp and only power on the FermWrap if the temperature drops below your set point. For the ultimate level of control, we recommend pairing it with the BrewBuilt CoolStix™ to provide cooling. With both accessories plugged into the temp controller, you'll get cooling or heating whenever you need it.


  • 40 watts
  • 115V
  • 11" H x 25" W
Item does not include carboy as pictured.
Kegland Part number: KL06255 
Community Q&A

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Why did you choose this?
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replace broken heater
Russ Brodeur on Nov 18, 2020
Already use this product - need more
Larry Hewitt on Oct 30, 2020
replace broken heater
Russ Brodeur on Nov 18, 2020
temperature control in colder months
Richard Arthurs on Nov 6, 2020
Already use this product - need more
Larry Hewitt on Oct 30, 2020
Good reviews
Douglas C on Oct 28, 2020
It came recommend by friends who already use it.
John L on Oct 24, 2020
Need a heater for my fermenter.
Matt Bahm on Oct 24, 2020
Mark B on Oct 15, 2020
Edward H on Oct 15, 2020
Need to warm up my carboy
bstourist on Oct 4, 2020
Need to heat my just built keezer on non-insulated porch in New England.
Thomas Parshall on Sep 25, 2020
Keep fermenting beer from getting to cold in my basement.
SHAWN ROSS T on Sep 18, 2020
recommendations from other brewers
David G on Sep 8, 2020
online reviews
Charles J on Aug 11, 2020
To control fermentation temperature in order to lager
David H on Jul 4, 2020
control temp on fermzilla
Christopher E W on May 27, 2020
wanted one for a while -- quality item
Lawrence F on May 25, 2020
Control fermentation temperatures
Jeremy L on May 22, 2020
As a marital aid. There, I said it. People fall into comfortable ruts, you know? At any rate, why is this any of your business?
Richard Z on May 22, 2020
Deal of the day!
Robert B on May 22, 2020
Great deal and needed a way to maintain consistent temp on my fermenter.
Tiffany D on May 21, 2020
For my Blichmann Fermentator
Joshua C on May 21, 2020
This should fit under the neoprene jacket of my anvil bucket fermenter
Eric M on May 9, 2020
Our current heater does not seem to be working; think we need a new one.
Julique L on May 9, 2020
Kettle sours
Michael S on May 2, 2020
Deal of the day
Christopher B on Apr 28, 2020
Conical Fermenter Heater
Steven Marcus B on Apr 22, 2020
To maintain heat for belgian beers
Charles S on Apr 20, 2020
I normally buy another brand of fermentation wrap, but I wanted to give this one a try to see if it performs as well as the other.
Michael Postiff on Apr 18, 2020
Help with maintaining a more even temperature flux during fermentation
Charles Carter on Apr 14, 2020
Competitive price, function.
John B on Apr 7, 2020
I'm fermenting in two carboy and only have one fermwraap. And it's 62 degrees in my shop
Don F on Mar 17, 2020
balls are in my stomach figured the yeast feels the same way
Valued C on Mar 16, 2020
A second position in my W1209 controlled lagering chamber
Kevin M on Mar 6, 2020
Need to warm Chardonnay for MLF
Ed W on Mar 3, 2020
turning fridge into temp controlled ferment box
Aron Thomas M on Feb 15, 2020
best option in my opinion to use in a chest freezer for temp control during the winter months
Chris E on Feb 11, 2020
A gift
Nancy H on Jan 30, 2020
Old one stopped working
Mark B on Jan 22, 2020
Warm up fermentation in winter to 70-72°
Zach B on Jan 11, 2020
for the cold season
David O on Jan 4, 2020
The one on my MoreBeer Ultimate Temperature Control conical fermenter failed.
RICHARD G on Jan 4, 2020
Heating my chronical fermentor
Robert Rimar` on Jan 3, 2020
Because I make cider with kveik
Matt L on Jan 3, 2020
Replacing other heat source
Ronald S on Jan 1, 2020
To warm up the area that i ferment my wine
jonathan l on Dec 31, 2019
CYNTHIA W H on Dec 18, 2019
cost efficient way to hold fermentation at warmer temperatures!
Timothy L on Dec 11, 2019
Jaime L on Dec 5, 2019
to keep temp in right range
Delfim S on Dec 4, 2019
Upgrading my brewing game!
Herminio A on Dec 1, 2019
temperature control in colder months
Richard Arthurs on Nov 6, 2020
Good reviews
Douglas C on Oct 28, 2020
Can this be used on a Fermentasaurus without damaging it?
Preston Hanson on Sep 19, 2018
The FermWrap™ Heater
The FermWrap™ Heater
Fermentasaurus Conical Fermenter - 9.25G/35L
Fermentasaurus Conical Fermenter - 9.25G/35L
BEST ANSWER: I use one with my fermentasaurus without any problems.
Can this be used on plastic Fermontser 7gal?
Timothy Chilcoat on Jan 27, 2018
BEST ANSWER: Yes, I have also used it on my Spidel 30 L ( 7.9 Gal). And works excellent. I did use a beach towel to wrap around my plastic Spide 30 L as temps were dropping down into the 30 s in my shop.
When using this with the Neoprene sleeve does it go inside or outside the sleeve?
Ryan Heideman on Apr 12, 2020
BEST ANSWER: You will get the most efficient use of your heater by putting it directly onto your fermenter and inside the neoprene sleeve.
Will this work with the 7.5 gallon anvil bucket fermenter? Cheers
Jeff Shoemaker on Jan 24, 2020
BEST ANSWER: I have a 7 gallon BrewBucket, so I can’t see why it wouldn’t work on the Anvil. I wrap it around the fermenter and use masking tape to tape the edges to the fermenter.
Can this be used on the stainless steel brewbucket fermenter?
John Lilli on Apr 26, 2018
BEST ANSWER: On the outside of the fermenter yes. Works great with a bit of extra insulation around it for improved heat retention.
How do you use the FermWrap with the Fermzilla and the Insulating Jacket? I thought the Fermzilla couldn't use a heater because it's plastic.
Rob Sletten on Jan 30, 2020
The FermWrap™ Heater
The FermWrap™ Heater
Insulating Jacket for 27L FermZilla
Insulating Jacket for 27L FermZilla
FermZilla Conical Fermenter - 7.1 gal. / 27 L
FermZilla Conical Fermenter - 7.1 gal. / 27 L
BEST ANSWER: I would not use the FermWrap. It is too wide to fit the FermZilla and it is rated at 40 watt. Kegland suggests under 30 watt is safe. I used 4" wide reptile heat wrap for my FermZilla. That is 22 watts and I have had no problems.

4.6 / 5.0
141 Reviews
5 Stars
4 Stars
3 Stars
2 Stars
1 Star
Works pretty well. Did what I needed it to.
I was skeptical about this being able to raise 5.5 gallons by 8 degrees, but it did. The carboy has ribs on it every couple of inches, so the wrap pretty much rests on the ribs, then you have to tape it in place. I used a controller in conjunction with this wrap and it worked out very good.
October 17, 2020
1 month ago
Works great, I use with my fermzilla and it helps getting heat up the sides.
September 11, 2020
3 months ago
FermWrap works great.
When fermenting a smaller batch it can be difficult to get to 80 F for a red wine fermentation (I am in the Monterey area). This gives me the ability to easily reach my desired temperature.
August 26, 2020
3 months ago
One of the easier ways to control heating in your Fermentation chamber.
I like this product. Used it with an Inkbird ITC-308. Plug in and set the temp - the only downside is I have not found a great way to mount it on my fermenter. I tried hook and loop pads, tape, rubber bands...rubber bands are the best so far. I wish it came with a glue-backed magnetic strip and little embedded metal tabs so you can stick it on when you need it and remove it when you don't. For diacetyl rests it's great, or if your fermentation spot is a bit chilly...this can fix it quick.
July 12, 2020
1 year ago
The FermWrap™ Heater
Worked well, paired with an Inkbird controller I was able to keep my cider fermenting nicely.
April 28, 2020
7 months ago
it works
I used it for a Belgian Strong Ale that needed warmer temperatures for fermentation up to 80 F (27 C) and it did it efficiently. I used a neoprene jacket from my Brewzilla setup as insulation
April 19, 2020
7 months ago
It warmed up a 100 Liter Varable vol. really well
April 9, 2020
8 months ago
Thermal wrap heating wrap
The thermal heating wrap works fantastic with my Inkbird temperature controller. I now have two of them and can control the temperature at all times within one degree on car it’s and or kegs during fermentation.
March 30, 2020
8 months ago
Second one i have purchased - works great
March 10, 2020
8 months ago
Some guidance or instruction needed
I purchased a FermWrap to help ferment the Hornindal Kveik yeast. I had no idea how warm it would get, but the yeast likes it up to 98 so I thought I was safe. 16 hrs later, the temp on the outside of the carboy was 125. I thought I had killed the yeast. Thankfully, that yeast is a monster and started to ferment again once I cooled it down and I think it may turn out OK. Some simple instructions would be helpful
February 25, 2020
9 months ago