Fermometer - Adhesive Thermometer

Fermometer - Adhesive Thermometer

In Stock
60 day no hassle return policy. Details

Liquid crystal thermometer which adheres to the side of a carboy, bucket, or even stainless conical to tell you the fermentation temperature. 44–86°F range (Fahrenheit only, not available in Celsius). This has always been one of our very best selling products.

What we really like about this unit, called The Fermometer, versus generic versions that are slightly cheaper is the more precise scale of 44–86°F. We also appreciate the handy suggested Lager and Ale temperature ranges printed right on it. An example of the more precise scale would be that on this unit it easy to tell 1 degree of difference, say between 72° and 73° degrees. The more generic units can sometimes jump 4 degrees.

Savvy homebrewers know that even 1 degree of temperature difference can have a big affect on the final flavor outcome. You may or may not have control over temperature but it is still helpful to know the exact fermentation temperature and to log it in your records.

Item # MT410
Shipping Eligible for Free Shipping Program
Availability California - In Stock
Pennsylvania - In Stock
Weight 0.02 LBS
Community Q&A

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Why did you choose this?
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bought three for 2 carboys and bucket fermenter
Dennis F on Jul 8, 2020
They work well and are accurate within a degree at a glance
Nate l on Jul 1, 2020
bought three for 2 carboys and bucket fermenter
Dennis F on Jul 8, 2020
Need to see temps on my carboy
Donald M on Jul 4, 2020
They work well and are accurate within a degree at a glance
Nate l on Jul 1, 2020
tried and true
Charles L on Jun 26, 2020
Easy temp monitoring in fermenter
Daniel H on Jun 24, 2020
Needed for fermonster
Greg H on Jun 20, 2020
These are handy
Anthony M on Jun 20, 2020
Need it
Daniel A on Jun 17, 2020
Helps to know what temp your fermenting at
Anthony J S on Jun 16, 2020
David L on Jun 15, 2020
New to brewing
Robert S on Jun 10, 2020
Well respected for accuracy and cheap
Aaron G on Jun 7, 2020
needed one for my second fermenting bucket
Paul M on Jun 6, 2020
Saw this on YouTube
Anthony M on Jun 2, 2020
Joshua E on Jun 1, 2020
Liked the look and more info than other adhesive thermometers
Brian C on May 30, 2020
Simple way to monitor carboy temps during fermentation.
Ed U on May 28, 2020
Just want to put a thermometer on my Speidel
Aaron Pittman on May 23, 2020
Better situational awareness.
Douglas b g on May 21, 2020
RENE B on May 20, 2020
1 gal brewing
Lisa W on May 19, 2020
only product
Eric R on May 18, 2020
Daniel H on May 12, 2020
To replace the original one after 6 yr
Valued C on May 9, 2020
These are neat
Rob J on May 1, 2020
for the secondary fermentor
David L on Apr 28, 2020
Like the idea of seeing more accurate numbers/ranges as opposed to the cheaper adhesive thermometers
Mike W on Apr 19, 2020
For carboy
Michael B on Apr 16, 2020
monitor approximate temp while fermenting
Robert W on Apr 15, 2020
The variance with these plastic tanks is negligible and it makes temperature readings easier with multiple tanks at a glance.
Nate l on Apr 12, 2020
New buckets need thermometers
Eric H on Mar 27, 2020
makes life so much easier
Dan G on Mar 26, 2020
just need to know. i think i have OCD:)
Paul B on Mar 24, 2020
Good quick check of the temp of the liquid in the fermentation process, for me (wine) I keep it between 68-74 deg F
David D on Mar 18, 2020
Randy on Mar 17, 2020
they work great
Enrique G on Mar 6, 2020
control fermentation temp. better
Chris P on Mar 3, 2020
need it for the new 5gal carboy
Gregory West on Feb 28, 2020
Easy was to look at fermentation temps
Reed Harrison L on Feb 25, 2020
Easy to see and use.
Gordon G on Feb 19, 2020
Monitor fermentation temperature
John F on Feb 12, 2020
Like to see temp
Charles A on Feb 11, 2020
Sounded useful
Carl C on Feb 1, 2020
Need a new one
Josh F on Jan 27, 2020
looks cool
Kyle S on Jan 20, 2020
works great
Anthony T on Jan 16, 2020
Need extra for spare fermenter
Zach B on Jan 11, 2020
Need an extra thermometer for my fermentation tank
Jaime L on Jan 3, 2020
Valued C on Dec 31, 2019
Replacement on a carboy
Martin S on Dec 12, 2019
Need to see temps on my carboy
Donald M on Jul 4, 2020
tried and true
Charles L on Jun 26, 2020

4.8 / 5.0
43 Reviews
5 Stars
4 Stars
3 Stars
2 Stars
1 Star
Super easy to install and fit perfectly in the car boy panel.
June 8, 2020
1 month ago
Accurate thermometer on my Speidel. I will be getting more of these
June 6, 2020
1 month ago
Decent and accurate
I got this to add to my carboys as the stickers that were on there were too hard to read. These are pretty accurate for what it is. Matched up with a temp probe inside and they are within a couple degrees. The adhesive could be a little stronger, but a hairdryer and rubbing seemed to get the edges to stick better.
May 25, 2020
1 month ago
easy to use with bucket or carboy
Great for instantly monitoring temperature with a cheap solution.
April 19, 2020
4 months ago
Works good. Thank you.
March 30, 2020
3 months ago
very handy device
This is very convenient to have adhered to the side of your fermenter to get a sense of the temperature. It's accurate enough to know if you're in the range you want to be in. Not as accurate as putting a thermometer into liquid, but that would be a real pain and probably not more helpful.
February 21, 2020
5 months ago
These things always work Great!!!
January 28, 2020
6 months ago
Better scale reading than the cheapies
worth a couple extra $$$ especially if you do lower temperature fermentations.
January 15, 2020
6 months ago
It works and shows the wort temp. What else can I ss
September 28, 2019
10 months ago
I like the increased upper range of the fermometer for those kveik yeast fermentations. I've got one in each bucket and carboy
August 11, 2019
11 months ago