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Grainfather GF30 Conical Fermenter

Ferment like never before! The Grainfather Conical Fermenter give the brewer professional fermentation control, just like the commercial breweries. Fermentation is arguably the most important part of producing a good quality beer. A good fermentation environment starts with a clean and sterile fermenter, has a consistent controlled temperature base and exposure to oxygen is minimised. The Grainfather Conical Fermenter provides you with a modular system for all of this and more!


Wireless Connectivity

The Conical Fermenter Pro comes with a built-in controller with wireless connectivity and digital display. This means you can connect the controller to the internet and the Grainfather App and track fermentation with automatic alerts and notifications from wherever have an internet connection. 

Double Walled

A stainless steel double walled skin is filled with a thick layer of polyurethane foam for insulation. This is what keeps the wort at a constant stable temperature with minimal influence from any external environmental temperature changes, providing insulation for your fermentation that a standard jacket cannot achieve.

Integrated Gentle Heating

In the cavity of the fermenter between the outer body and cone sits a 30 Watt, 12V heating element. Unlike standard heating elements/sources that directly heat the liquid, this heat source is designed to heat the environment in between the walls of the fermenter, which in turn heats the liquid. It is similar to controlling the temperature in a temperature controlled room. The fermenter acts as an artificial environment which can be heated, meaning the temperature is raised in an even and controlled manner which is much better for the yeast.

Integrated Cooling Sleeve

In between the two stainless steel walls sits a cooling sleeve (also made of stainless steel). This cooling sleeve is welded onto the inner wall of the fermenter and can be hooked up to the additionally purchased Glycol Chiller. Temperature is dialed into the Temperature Controller and as the cooling liquid travels through this sleeve, it cools the stainless steel which in turn evenly cools the beer in the fermenter. The cooling sleeve never comes into contact with the beer, it is completely concealed, built into the fermenter and never needs cleaning or sanitising - a true innovation for a fermenter of this scale.

Easy Access to the Interior for Hassle Free Cleaning

The Grainfather Conical Fermenter has a smooth interior with no additions such as cooling coils or additional sampling valves meaning it is easy to clean and minimises the risk of infection.

Golden Angle Conical

The conical shape of the fermenter is typical for professional breweries. Our conical has been designed with the 'Golden Angle' of 60º. This is the optimum angle for yeast and sediment to drop down to the bottom of the cone without getting stuck to the sides, allowing you to transfer from above the sediment line, resulting in clearer beer. The conical shape also allows for better mixing during fermentation due to the path of convention currents that it enables to occur.

Dual Valve Tap

Make the yeast dumping, transferring and sampling process more professional with this innovative all in one valve. Sampling and transferring is done through an inlet above the sediment line, allowing for clear, sediment free beer. Easily collect your yeast from below the sediment line with the same unique valve for re-cultivating and pitching. The innovative design of the valve allows for this dual functionality and less cleaning for you.


The Grainfather Conical Fermenter is fully supported around the world by a fantastic support team who love brewing just as much as you do. Our support team is here for any technical enquiries on brewing or how the Conical Fermenter works, as well as general customer service enquiries.

 All Grainfather Conical Fermenters come with a 36 month warranty.

Whats Included
Conical Fermenter
Fermenter Lid
Rubber Bung
Bubbler Airlock
Cone Plug
Cone Plug Seal
5 cm (2") Tri Clamp
Built in Wireless controller
Powder Adapter and Wall Plug
2 m (6.5 ft) M12 3-Pin Power Cord
Dual Valve Tap

Digital Temperature Controller

304 Stainless Steel Body (polished inner and brushed outer)
30 L (8 US Gal) capacity (volume markings on inner body up to 25 L (7 US Gal)
30 W, 12 V heating power
Built in Wireless controller
3.8 cm (1.5") ferrule on lid (for pressure transfer attachments)
5 cm (2") ferrule on bottom of cone
Dual Valve Tap with 110 mm (4.3”) inlet
Dimensions of Conical Fermenter:
Diameter with handles: 360 mm
Height (without airlock): 910 mm
Height with bubbler airlock: 1090 mm
Dimensions of Carton
368 mm W x 325 mm L x 905 mm H

Customer Reviews

Based on 1 review
Grant Johnson
Best accessory ever

Really pleased with this purchase. It is just great being able to "fill er up", set the temp and leave it to do its thing. Got the cooling pump kit with it also which is very necessary during summer to keep the temperature even - just change ice packs in a chilly bin in the morning and evening. The inbuilt heater looks after things in the winter...!!