Grainfather S40 Brewing System



Last updated on: 8 May 2023

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The Grainfather S40 brewing system has a 46L (12 US Gal) capacity, allowing you to create 40L (11US Gal) of beer every time that you brew. Don’t let the price fool you, this product has a high grade stainless steel build and is packed full of features to make every brew easy.

The S40 is a fantastic entry level all-in-one. It’s not quite as feature heavy as some of the more expensive Grainfather units but offers great quality at an affordable price point and will get the job done.

The capacity is 46l, meaning you can brew up to 40l of wort, enough for two corny kegs – or lower volumes of higher abv beer. You can even have a full volume, no sparge brew day using the extra capacity. The construction is twin walled 304 grade Stainless Steel which gives added insulation in the body to improve ramp times and holding mash temps. The elements are powerful at 2.3kw to make light work of bigger batches and can be reduce to 1kw for a more steady control of mash temperatures.

The recirculation is powered by the built in pump and returns into the open mash tun through a wort distributor via the silicone outlet of the recirc arm. A really interesting feature is the newly designed mashing basket which includes a fixed base, and perforations on the side. This allows great recirculation without the need of complex overflow pipework, so is quicker to mash in, harder to go wrong and perfect for beginners as well as experienced brewers that want a quick, easy brew day.

As standard, the S40 comes with a Stainless Steel immersion chiller and is emptied from the side ball valve. It is recommended a hop spider or muslin bag is used to prevent blockages when emptying.

This unit is backed by Grainfather renowned customer service team and comes with a 2 year warranty.


  • Sleek 304 grade Stainless Steel body.
  • Easily manage heating using the digital controller with colour display.
  • Built in pump for maximum brewing efficiencies.
  • Easily cool wort with the Stainless Steel immersion chiller.
  • Recirculation arm for more efficient mashing.
  • 2 Year Warranty.

What’s Included?

  • Grainfather S40
  • Grain Basket
  • Lid
  • Immersion Chiller & Hoses.
  • Recirculation Chiller & Hoses.
  • Connection Fittings.


  • Size: 680mm x 480mm
  • Weight: 25kg
  • Capacity: 46L
  • Batch Volume: Max: 40L – Min: 10L
  • Grain Bill: Max: 10kg – Min: 5kg
  • Power: 2300w, 220v.
  • Connectivity: None.