BrewBuilt CoolStix™ for Carboys

BrewBuilt CoolStix™ for Carboys

In Stock
60 day no hassle return policy. Details

Keep your fermentation temperature in check with the BrewBuilt CoolStix for Carboys! Temperature control is one the most important aspects of a healthy, happy fermentation. When your fermenting beer gets too hot, the yeast will likely impart off-flavors that can easily overwhelm the taste of your finished beer. The CoolStix is a revolutionary cooling solution for carboys. It is easy to clean, easy to setup, and cools quickly and efficiently.

You will also need a cold water source to provide the cooling solution. For maintaining ale temperatures, a cooler or bucket of ice water is sufficient in most cases. For maintaining lagering temperatures or cold crashing, we recommend the Icemaster 100 Glycol Chiller.

For a complete kit with all the necessary pieces, check out the BrewBuilt CoolStix for Carboys with Pump Kit.


  • Carboy CoolStix
  • 2x Fitting Assemblies That Include:
    • 2x Push-In Fittings with 1/4" FPT
    • 2x Male Quick Disconnects with 1/4" MPT
    • 2x Female Quick Disconnects with 3/8" Barbs

You Will Also Need:

  • Submersible Pump
  • Temperature Controller
  • Thermowell
  • 3/8" ID Tubing
  • 3-Hole Hood or Stopper
  • Ice Bath or Glycol Chiller

CoolStix Specs:

  • Diameter - 1/2"
  • Overall Length - 25½"
  • Bottom of CoolStix to Lower Assembly - 22"
  • Width from CoolStix to Barb - 5½"
  • Made from 304 Stainless Steel


Item # GLY510
Shipping Eligible for Free Shipping Program
Availability California - In Stock
Pennsylvania - In Stock
Weight 0.56 LBS
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Why did you choose this?
MoreFlavor Store
sounds like a great new product for homebrew
Matthew Brown on Jul 17, 2019
sounds like a great new product for homebrew
Matthew Brown on Jul 17, 2019
fermentation temperature control
John Sims on Jul 16, 2019
fermentation temperature control
John Sims on Jul 16, 2019

4.5 / 5.0
2 Reviews
5 Stars
4 Stars
3 Stars
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1 Star
Keeping my brew cool!
Working with my InkBird controller, my beer has been fermenting happily for a week, varying no more than 2 degrees (F) the entire time, despite the outdoor temperature swings.
August 23, 2019
10 months ago
I like it and I hate it. Before, I put the stopper in and ran a blow-off or air lock and I was off to the races. The problem with this thing is the carboy hood. The holes in the hood are too big for just about everything that has to go through them. I was able (after initial setup) to wrap the CoolStix, thermowell, and blow-off tubing with teflon tape to make them large enough to seal the holes in the hood. I am using a small cooler that I got at Walmart. I drilled two holes in the front of it to accommodate the tubing, added enough water for the pump to pick it up and am using frozen water bottles as my cold source. If you use ice, you'll be constantly emptying the melted water. I purchased the whole setup with the Inkbird controller which works as advertised.
August 20, 2019