Grainfather G40 Brewing System

22.64 (in)
29.53 (in)
24.21 (in)
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The Grainfather G40 brewing system has a bigger capacity and better connectivity. Produce up to 40L (11 US Gal) of beer from one brew and connect your mobile device to the smart controller with built-in wireless control via the Grainfather App, for step-by-step brewing and access to bazillions of recipes.

The Grainfather G40 is the latest brewing system in the G Series range from Grainfather. Packed with all of the innovative features you can find in the G70, this brewing system is your new best friend for brews up to 11 gal (40L), perfect to fill two 5 gal corny kegs. With a max grain bill of 29 lb., you can choose to add extra grain and less liquid to make beer with an ABV over 9%.

Manage your brew remotely with step-by-step brewing with the smart wireless controller. All you need to do is connect your mobile device to the controller and control your brew through the FREE Grainfather app where you have access to bazillions of recipes to choose from, or create your own!

Please Note - this system comes standard with a NEMA 6-15P plug, and requires access to a 220v-240v power supply.  


  • G40 body built with sleek 304-grade stainless steel
  • Large, surface mounted heated elements heat wort evenly
  • Connect your mobile device to the smart wireless controller via the Grainfather App (link to the Grainfather app page) and manage your brew remotely. The Grainfather app gives you access to brewing tools and calculators to brew with confidence, and bazillions of recipes to choose from or create your own.
  • Reach your expected gravity with a conical base for maximum wort transfer
  • Comes with a counterflow wort chiller for a more efficient and sanitary brew transfer
  • PID heating control for accurate temperature management during mashing
  • Quick and easy cleaning with CIP (clean in place) capability
  • An integrated sight glass for easy volume reading
  • Rolled edge mash plate and large hop filter to reduce blockages


We’re a dedicated and knowledgeable team who are passionate about helping our customers get the most out of their system. We can assist you with any brewing-related queries, no matter how technical. We’re also confident that our products will produce professional, craft brewery-like results. That’s why every G40 comes with a signature Grainfather 3-year warranty. 


  • Grainfather G40
  • Smart controller with built-in wireless connectivity
  • Counterflow wort chiller
  • Glass lid
  • Lifting bar
  • Inner basket
  • Recirculation hose
  • Grain plate
  • Hop filter
  • Fittings


  • Size: 26" x 21"
  • Weight: 64lb
  • Capacity: 12 gal
  • Batch volume
    • Maximum: 11 gal (40L)
    • Minimum: 3 gal (10L)
  • Grain bill
    • Maximum: 29lb (13kg)*
    • Minimum: 7lb (3kg)
      • *Max weight depends on grain crush, type, and variety. Large grain bills may also require the use of an additional grain plate."
  • Power: 3300W, 240V
  • Connectivity: Wireless control



Order/Product Availability:

***This item is a custom order item, we do not keep them in stock at the store.  The turn around time is typically no more than 2 weeks.  Please call or email the store if you have further questions or inquires.***

Shipping Notice - *PLEASE READ*

“Due to the weight and dimensions of the Grainfather G70, Grainfather G40, and Grainfather GC4 Glycol Chiller, the manufacturer has recommended that these products be shipped exclusively by palletized freight in order to prevent damage from occurring in transit.

Standard parcel shipping will not be an option for these items from Southern Homebrew. Unless other arrangements have been made, these products will be shipped using our chosen freight services by default and will incur the standard freight fees.

  • Manufacturer Warranty is void on products damaged during ground shipment or delivered differently than proposed by the supplier, via palletized freight.
  • Damage to freight shipped through Southern Homebrew's freight vendors will be covered because Southern Homebrew will only ship according to manufacturer/distributors requirements.
  • In-Store pick-up is permitted but products damaged in transit by the customer once it leaves the store will need to be addressed on a case by case basis.  We require our staff and the customer to do a thorough inpection prior to the product leaving the exceptions!

Brewing System:







120V: EZZZ9007

220/240V: EZZZ9105



Capacity (max preboil volume)

12 gal (46L)

8 gal (30L)

12 gal (46L)

18 gal (70L)

Batch Volume (max)

11 gal (40L)

6 gal (23L)

11 gal (40L)

16 gal (60L)

Maximum Grain Weight (dry)

22 lb.

20 lb.

29 lb.*

37 lb.


2300W, 240V

•2000W, 240V

•1600W, 120V

3300W, 240V

3300W, 240V

Boil Loss

0.8 gal/hr

0.8 gal/hr

1 gal/hr

1 gal/hr









Wireless Internet

Wireless Internet

Pump Filter


Single Filter

Large Dual-Stage

Large Dual Stage

Pump Heat Rating

221°F (105°C)

176°F (80°C)

221°F (105°C)

221°F (105°C)

Pump Max Head / Capacity

2.4 m / 16 Lpm

2.1 m / 12 Lpm

3.4 m / 19 Lpm

4.3 m / 32 Lpm

Steel Grade






2 years

3 years

3 years

3 years

Programmable Step Mashing

Removable Grain Basket Bottom Plate


Delayed Heating


Sight Glass


Winchable Grain Basket



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