The FermWrap Heater

The FermWrap Heater

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Keep your yeast or ML happy and your ferment warm during those cold winter months with this flexible heater made by Fermentap. Using tape to adhere, this flexible heating wrap 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 wine from 5-20 degrees Fahrenheit.

If using carboy or bucket you can attach directly using tape (as seen in photo above.) We recommend electrical tape as it sticks and unsticks the easiest. Heating can be contolled by sticking either the entire wrap or a portion of the wrap to the fermenter. In an open evironment we see a heating differential between carboy and ambient of 10-15 degrees. This differential can be increased by using our carboy bag to insulate a carboy (this has been tested.) To decrease the temperature differential, stick only a portion of the heating wrap to the fermenter.

For precise results, we recommend using our temp controller (FE610) and carboy thermowell (FE612) for the ultimate in fermentation temperature contol.

For heating small stainless variable volume fermenters and barrels up to 30 gallons a single FermWrap! works great. For volumes of 60 gallons or more, we recommend using two or more FermWraps (we do this in our winery Olin Wines all the time!).

With 40 watts of heat spread over two square feet it provides gentle even heating. Draws 40 watts. 115V. Manufactured by Fermentap.

Kegland Part number: KL06255 

Item # FE650
Shipping Eligible for Free Shipping Program
Availability California - In Stock
Pennsylvania - In Stock
Weight 0.25 LBS
Community Q&A

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Browse 10 questions Browse 10 questions and 38 answers
Why did you choose this?
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So I could warm up my beers
Zachary C on Feb 10, 2023
Warmer beer is good at certain points in the fermentation.
Chad T on Jan 19, 2023
So I could warm up my beers
Zachary C on Feb 10, 2023
David D on Feb 3, 2023
Warmer beer is good at certain points in the fermentation.
Chad T on Jan 19, 2023
cost savings
Stephen C on Jan 4, 2023
Recommend by Kiev Ratter
John J on Dec 19, 2022
Christmas Gift
Judith W on Dec 14, 2022
I need this because my fermenting freezer is outside and it is cold. I want the beer to ferment at an optimal range.
Jonathan J on Dec 8, 2022
keep the temp in the winter
Big Al on Nov 28, 2022
Internet reviews
Larry E on Nov 28, 2022
cold weather brewing, hopefully this will help
Isaac K on Nov 15, 2022
Warm Barrel during MLF
Joe M on Nov 1, 2022
These little heaters don't look like much, but they really work! I'm fermenting hard cider in a barn and without this heater the process slows to barely a crawl. Excellent product!
Jerry F on Oct 12, 2022
Need for fermenting lagers
Chris S on Sep 5, 2022
I have it and it works great for heating
Jon D on Aug 25, 2022
Value and function.
Michael D on Aug 1, 2022
got one already
brian h on Jul 12, 2022
adding a bright tank to the system
Richard on Jun 2, 2022
So we can use Kveik
Dion F on May 31, 2022
Want temperature control with fermzilla
John W on May 14, 2022
Will maintain my Fermentation temps
Nicholas T on May 7, 2022
To be able to ferment at higher temps, which will enable me to ferment with Kviek yeast, and have a drinkable IPA within 5-7 days of brewing.
Michael C on Apr 28, 2022
great word of mouth recommendations
michael w on Apr 28, 2022
Basement temperature can get cool.
Kevin Brazell on Apr 26, 2022
I need a higher heat source for my fermentation fridge
Dave B on Mar 19, 2022
pre order and price
joshua john logan on Feb 23, 2022
Winter temp and need to keep some heat on the fermenter
Kevin Brazell on Feb 2, 2022
Old one wore out
Valued C on Feb 2, 2022
to heat
Ryan B on Jan 27, 2022
only one you have
Ronald S on Jan 25, 2022
It’s winter and I wanna make mead
Walter W. S on Dec 24, 2021
Need warmer for my small 7 gal SS conicals. Cheaper than buying the whole kit from SS Brewtech since I already have the temp controllers.
Nathaniel S on Dec 22, 2021
Simple heater for winter
Ryan H on Dec 20, 2021
Gail A K on Dec 10, 2021
Gift for relative
Katherine L on Dec 7, 2021
To control Fermentation temps
Jeff Soule on Nov 18, 2021
to help control my fermentations
WILLIAM H on Oct 20, 2021
Fermentation Temp control
Charles O on Sep 25, 2021
Winter is coming
Garrett R. M on Sep 21, 2021
for heat
Ryan H on Sep 14, 2021
Wanted to control a high fermentation temp on beer fermented with Kveik.
James D on Sep 8, 2021
For fermenting with Kviek yeast
Vincent K on Sep 3, 2021
Starting Temperature Controlled Fermentation
John M on Aug 7, 2021
I picked this item
Vincent B on Jul 10, 2021
The one I do own is similar but stopped working.
James P on Jun 2, 2021
Wort would you expect? its the best on the market!
John d on May 31, 2021
KD on Jan 20, 2021
need it, winter here
John R H on Jan 16, 2021
Brewing two ales in the winter has necessitated the purchase of a ~second~ fermentation heater
Adrian F on Jan 13, 2021
Valued C on Jan 9, 2021
Seems like a great pick for a beer lover
Paloma Acha D on Jan 7, 2021
David D on Feb 3, 2023
cost savings
Stephen C on Jan 4, 2023
Can this be used on a Fermentasaurus without damaging it?
Preston Hanson on Sep 19, 2018
The FermWrap™ Heater | Fermentation Heater | 40 watts | 115V
The FermWrap™ Heater | Fermentation Heater | 40 watts | 115V
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.
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 | Fermentation Heater | 40 watts | 115V
The FermWrap™ Heater | Fermentation Heater | 40 watts | 115V
Insulating Jacket for FermZilla 27L Conical or 60L All Rounder
Insulating Jacket for FermZilla 27L Conical or 60L All Rounder
FermZilla Conical Fermenter - 7.1 gal. / 27 L
FermZilla Conical Fermenter - 7.1 gal. / 27 L
BEST ANSWER: If you read the fermwrap it is a low watt heater more like a heating pad not enough to effect plastic
Can I put this on a stainless steal fermenter?
Cainon brown on Jan 3, 2021
BEST ANSWER: I use mine on a 7 gal stainless steel fermenter and am VERY happy with it. I brew in my garage and with an inkbird controller, this heater will keep my beer at 68 F even when the garage temp is 30 F. I use black electrical tape to hold it against the fermenter. To be fair, I do wrap the fermenter with insulation right over the heater.
How much can you raise the temperature with the sleeve added?
Jeffrey Clause on Mar 30, 2022
BEST ANSWER: I wrapped a glass fermenter with this heater and then covered everything with towels. It fermented a beer with Kveik yeast at close to 100°F. It might be able to go higher, but it seemed like that was about the limit. I used a temperature controller to maintain that temperature, so I don't know for sure.
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.
What is the length of the power cord?
Andrew Stephon on Feb 27, 2023
BEST ANSWER: 52 inches. It works good from my temperature controller, that is mounted on the top of my fermenting fridge.
Will this work with a SS Brewtech 7gal unitank (I have both a version 1 and newer version 2)? I only ask because of the various tri-clamp ports on the unit
Richard Mojica on Dec 31, 2023

4.6 / 5.0
157 Reviews
5 Stars
4 Stars
3 Stars
2 Stars
1 Star
Rated 5 out of 5
I'm so glad I got the chance to buy this
February 27, 2023
1 year ago
Rated 5 out of 5
Awesome product paired with a temp controller.
This fermwrap has been exceptional at keeping my fermentation temps where they need to be. Paired with an Inkbird controller, thermowell, and sitting in a mini fridge, I am able to dial in my temps +\- 1 degree.
January 26, 2023
1 year ago
Rated 5 out of 5
Perfect for ferm freezer
Works great in my ferm freezer with the inkbird-308 wifi. Heats nice and steady to keep the freezer near 70 in my cold basement
Ferm wrap in chest freezer
Ferm wrap in chest freezer
January 26, 2023
1 year ago
Rated 3 out of 5
Holds temperature well.
It seems to work well enough. The only issue I have is that it doesn't come with anything to hold it on the vessel. Since it doesn't wrap all the way around it could use some sort of strap.
January 2, 2023
1 year ago
Rated 4 out of 5
Works well, little flimsy
Works perfectly with our new bung and temp controller and thermowell. We have a much better control of our fermentation temperature. Would purchase again, but it does seem a little flimsy so I’m not sure how long it will last. We currently have it keeping our Lambic Ale at then proper fermentation temperature.
December 7, 2022
1 year ago
Rated 5 out of 5
Best Temp Control
I have been using these for years with a temp controller. This new design on how cord attaches is a great improvement over previous models.
December 1, 2022
1 year ago
Rated 4 out of 5
I am a bit disappointed with the heater, but it is my own fault. I assumed the heater would be thermostaticly controlled, it is not. Apartrom that it works great, I just have to keep an eye on it.
November 30, 2022
1 year ago
Rated 5 out of 5
Great product
Just what I need for my fermenter
October 6, 2022
1 year ago
Rated 5 out of 5
The fermwrap is perfect for my brew set up.
May 16, 2022
over 2 years ago
Rated 5 out of 5
Versitile, simple, works on an anvil bucket nicely. Keep it simple stupid.
Wrapped with anvil cooling package.
Wrapped with anvil cooling package.
January 10, 2022
over 2 years ago