Brew Jacket Immersion Pro

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This item is currently unavailable. Pre-orders accepted with estimated ship date end of June, 2017

Purchase multiple Jacket Immersion Pros for as low as $199 each!

Controlling your fermentation temperature just got easier. The BrewJacket Immersion Pro, with dual heating and cooling capability, will maintain fermentation temperature 35° above or below ambient temperature. All in a space no bigger than your fermentor. 

Works with PET carboys, plastic buckets, Spiedel 20 and 30 liter, Catalyst, FastFerment, SS Brewtech Conicals and Brew Buckets, Glass and Plastic Big Mouth Bubblers. Requires a 1.75" hole to fit the Immersion rod. 


– Immersion Pro with C/F temperature selection
– Jacket for Carboy / Bucket
– Drilled stopper and sleeved grommet for air release
– Bulkhead connector and one-way co2 release valve
– Universal power supply: 100v-240v, 50/60hz with cord for your country of choice

Fermentor sold separately. Pre-drilled lids for various fermentors available separately. Add $70 per jacket for upgrade to conical jacket.

How To Make An Ale with a BrewJacket Immersion from Aaron Walls on Vimeo.

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  • 5
    Solves your fermentation temperature woes!

    Posted by Dustin L. on Jan 19th 2017

    Hey All! I've been home brewing for 5 years now and always relied on the temperature of the house (65-70) degrees to hold temperatures steady enough through fermentation of Ales. When temps got higher during vigorous fermentation, I opted to used the old "swamp cooler" trick, but it was never a precise temperature control and it still wouldn't allow me to lager anything successfully. Also, I don't have the room for a temp controlled deep freezer or fridge just to use for a fermentation chamber.

    Meet the Brew Jacket Immersion Pro! PRO, because it cools as well as heats! How cool? How about 35f above or below ambient room temp! It consists of a thermo-electric cooler (Peltier effect) with temperature control w/temp sensor, attached to an anodized cooling rod that is immersed in your fermentor in your wort/beer, a super thick insulation jacket to fit pretty much any 5 gallon fermentor or your choice and an accessories kit (pieces for blowoff tubing, stopper for the immersion rod. It comes standard for use with carboys(plastic) and standard fermenting buckets. Small modifications are needed to your fermentation vessels.

    I brewed my first ever lager, a Munch Dunkel, this past weekend on my Grainfather and have nothing but the BEST things to say about my experience with the BREW JACKET (and the Grainfather!..see Grainfather review) It took less that 24 hours for the wort to reach my 50f degree lager fermentation temperature, and it holds it within .5 degrees! When the unit is within .5 degrees, the cooling fan on the unit shuts off until it triggers on. It does its job well as long as you thoroughly read the direction!!!

    This is a great product for the price, simple to use, very efficient way of precise temperature control of your ales and lagers. Can't wait to report back after some more experiences! As always, Bill at Final Gravity will help you with any question your have.