BrewZilla vs Grainfather: which suits you?

If you’re moving from kits and extract to all-grain, the BrewZilla vs Grainfather question mostly comes down to two plain things before brand: how much beer you want out of each brew day, and what power point is on the shed wall. Get those two right and the shortlist shrinks fast.

A quick note on what this is. We haven’t bench-tested any of these units. This is a comparison of the specs and wording the makers publish on their Australian store pages, checked on 16 October 2026, plus our own price-tracking catalogue. Where a fact is a maker’s claim, we say so. Where we couldn’t compare something fairly, we say that too, near the end. Prices aren’t quoted in the text because they move daily; the live price badges below are the place to look.

The short answer, by size

Batch you’re after	Model	Live price	Link
Around 25 L	BrewZilla Gen 4.1 35 L	from $619.95 at Brew HQ · checked 56 min ago	BrewZilla Gen 4.1 35L
Around 25 L	Grainfather G30 v3	from $949.00 at Brew HQ · checked 56 min ago	Grainfather G30 v3
Up to 40 L	Grainfather G40	from $1,595.00 at Brewmart · checked 56 min ago	Grainfather G40
Around 50 to 55 L	BrewZilla Gen 4.1 65 L	from $945.00 at iBrew · checked 56 min ago	BrewZilla Gen 4.1 65L
Up to 60 L	Grainfather G70 v2	from $2,100.00 at iBrew · checked 56 min ago	Grainfather G70 v2
Around 90 L	BrewZilla Gen 4.1 100 L	No current price	BrewZilla Gen 4.1 100L

Three things decide most of it:

• Around 25 L: the BrewZilla 35 L and the Grainfather G30 v3 are the natural pair. The G40 is the step up if you want a bigger batch, and it ships in a mode for a standard 10A power point.
• Double batches (50 to 60 L): the BrewZilla 65 L and the G70 v2 both need a 15A circuit, so the electrical job comes before the shopping.
• 90 L and up: only the BrewZilla 100 L is in play, and it asks the most of your power supply. We found no Grainfather equivalent in our catalogue.

Neither brand wins everywhere. Match the size and the power point first, then use the box contents and warranty to break ties.

Which models we compared

On the KegLand side: the BrewZilla Gen 4.1 35 L, 65 L and 100 L. KegLand’s product titles say Gen 4.1, though the web addresses and some image text still say Gen 4. We’ve gone with the product title.

On the Grainfather side: the G30 v3, the G40 and the G70 v2. The G30 v3 listing on the Australian store is the “without Chiller” version; a separate bundle with a counterflow chiller also exists.

We’ve left out KegLand’s Digiboil. It’s a boiler, not a mash-and-boil all-in-one, so it isn’t a real substitute for either range.

Vessel size is not batch size

The two makers describe capacity differently, which trips people up. KegLand gives the vessel’s maximum volume and then says what batch it suits. Grainfather gives the maximum batch of finished wort.

Model	What the maker says
BrewZilla 35 L	35 L maximum capacity, suited to single batches up to approx. 25 L
BrewZilla 65 L	65 L maximum capacity, double batches up to approx. 50 to 55 L
BrewZilla 100 L	Suited to triple or quadruple batches up to approx. 90 L
Grainfather G30 v3	Up to 25 L of wort (minimum 10 L)
Grainfather G40	Up to 40 L (minimum 10 L)
Grainfather G70 v2	Up to 60 L (minimum 30 L)

Read it by batch, not by the number in the product name. At around 25 L the 35 L BrewZilla and the G30 v3 line up. In the middle, the BrewZilla 65 L’s approx. 50 to 55 L sits between the G40’s 40 L and the G70 v2’s 60 L. The “approx.” and “ideally suited” wording on the KegLand side is softer than Grainfather’s “up to”, so don’t read 60 L against 55 L as a precise gap.

The G70 v2’s 30 L minimum batch also makes it a poor fit if you mostly brew smaller volumes.

Power: what your shed wall can run

This is where the choice gets decided for a lot of Australian buyers. Watts are how much heat the element makes; amps are how much current the circuit has to carry. A standard Australian domestic power point is 10A, and higher-powered units need a 15A circuit or something bigger. We’re only repeating what the makers publish here. Ask a licensed electrician about anything beyond a standard power point.

Model	Element power	Circuit, per the maker
BrewZilla 35 L	2400 W	KegLand’s Q&A says a standard 10A circuit (normal domestic plug) is enough
BrewZilla 65 L	3500 W	KegLand’s Q&A says it is a 15A unit
BrewZilla 100 L	6600 W	Runs out of the box on a 32A single-phase circuit; KegLand says it can be rewired by a licensed electrician to a 10A three-phase connection
Grainfather G30 v3	2000 W (AU)	Plug rating not published on the page
Grainfather G40	2300 W in 10A mode; 3300 W in 15A mode	Ships in 10A mode. The 15A cable is sold separately, and a 15A socket needs to be professionally installed
Grainfather G70 v2	3300 W	Needs a professionally installed dedicated 15A socket

What this means in practice:

• The 35 L BrewZilla and the G40 are the two with a documented 10A path. The 35 L needs nothing more. The G40 ships in 10A mode and can be upgraded to 15A mode for the higher element power, with the cable and socket extras above.
• The 65 L’s 15A rating comes from a Q&A answer on the 35 L product page, not the 65 L page itself. The 65 L page does list a 15A extension lead as a recommended accessory, which fits, but confirm the circuit requirement with KegLand or your retailer before you buy.
• The 100 L is the outlier. It’s the only unit here that needs a 32A circuit or an electrician’s rewire to three-phase. That may suit a dedicated brewery space, but it isn’t plug-and-brew.
• The G30 v3’s plug rating isn’t published, so we can’t say whether it runs on a standard outlet like the 35 L does. Confirm with Grainfather or the retailer.

Control and app

A feature-for-feature verdict isn’t fair on what we’ve got, because the two makers describe control differently.

Grainfather’s units are controlled through the Grainfather App. The G30 v3 is Bluetooth as standard, with Wi-Fi available by adding the separate GCAST bridge. The G40 page lists Wi-Fi control. The G70 v2 page is inconsistent: its spec list says Wi-Fi, but the description says built-in Bluetooth. We’d call it “app control” and confirm the connection type before you rely on it.

KegLand’s pages describe the RAPT ecosystem as Wi-Fi and Bluetooth capable, with Bluetooth requiring a separate RAPT Bluetooth Thermometer, and say its devices work through the RAPT Brew App. That wording is about the ecosystem as a whole, not a plain statement of what the BrewZilla controller itself connects to.

Mash basket design

This one is a design difference, not a quality ranking. We haven’t seen any evidence either way on performance.

BrewZilla uses a malt pipe, a tube that holds the grain. KegLand says the Gen 4.1 pipe is 30% larger than previous designs, and describes a two-stage pipe you can lift part-way before sparging (it notes this isn’t available in all markets). It also says the false bottom, the plate the grain sits on, is lower in profile than before.

Grainfather uses a perforated grain basket that, the maker says, removes the need for a top plate or extra pipework. The G30 v3 comes with a grain plate; the G40 and G70 v2 have a rolled-edge plate and hop filter. We can’t tell you from spec pages which style is nicer to use.

What’s in the box, and warranty

A chiller cools the wort quickly after the boil. A counterflow chiller passes hot wort through a tube cooled by water running the other way; an immersion chiller is a coil you sit in the pot. This is where the box contents differ most.

Model	Chiller in the box, per the maker	Warranty, as stated by the maker
BrewZilla 35 L	Not stated on the page; check the listing. A counterflow chiller is sold separately	5 years
BrewZilla 65 L	A Q&A answer on the page says a stainless immersion chiller is included	5 years
BrewZilla 100 L	Not included	12 months (the page says “Gen 4 100L”)
Grainfather G30 v3	Not included on this listing; counterflow chiller available separately or as a bundle	3 years
Grainfather G40	Counterflow chiller included	3 years
Grainfather G70 v2	Counterflow chiller included	3 years

The 5-year BrewZilla warranty appears on the 35 L and 65 L pages only. The 100 L page states 12 months, so don’t assume the longer cover carries across the range.

Accessories and distilling

Each brand has its own add-on range. KegLand lists the Red Reaper counterflow chiller, a Heat Exchange Dish (standard on the 100 L, an optional upgrade on the range), the RAPT thermometer and a 15A extension lead. Grainfather’s accessories collection includes the counterflow chiller, the GCAST Wi-Fi bridge, a whirlpool arm for the G40 and G70, a grain mill, and an 18 L sparge water heater.

On distilling, Grainfather offers official distilling lid and attachment kits for the G40 and G70 v2. KegLand’s 35 L page says the clamps were designed with distillers in mind, but doesn’t list the BrewZilla as a distilling product, so we’d call that undocumented rather than unsupported. Grainfather’s own page notes that in certain countries distillation and possession of distilling equipment is illegal. Check the rules where you live before going near it.

What we couldn’t compare

We left these out of the verdicts because the maker pages don’t give comparable evidence:

• controller quality, pump quality, efficiency and reliability, where we have no testing or comparable specs on either side;
• build material: Grainfather states a 304 stainless steel body, but the KegLand pages we captured don’t state the vessel material;
• third-party app support such as Brewfather;
• the G30 v3’s plug rating, and any version bundled with a Connect control box;
• warranty claim terms for either maker. Treat the headline years as the maker’s own claim.

We also don’t compare price in the text, because the live badges do that better.

Which should you pick?

Around 25 L, first all-grain system. The BrewZilla 35 L and Grainfather G30 v3 are a tie on the evidence we have. The one documented difference is the stated warranty (5 years against 3); the rest, such as basket style and app, comes down to preference. If your shed only has a standard power point, the 35 L is documented as fine there; for the G30 v3, confirm the plug rating first. If you think you’ll want 40 L batches later, the G40 also ships in 10A mode and includes a counterflow chiller.

Double batches, with a 15A circuit available or planned. The BrewZilla 65 L and Grainfather G70 v2 both need 15A and are close. The G70 v2 states a counterflow chiller in the box and a higher maximum batch (up to 60 L against approx. 50 to 55 L), but a 30 L minimum. The 65 L has the longer stated warranty and, per its Q&A, an immersion chiller. If 40 L is enough, the G40 avoids the 15A requirement unless you choose its upgrade.

90 L or more. The BrewZilla 100 L, by default; nothing in our catalogue matches it. Budget for the 32A circuit or an electrician’s rewire, and note the 12-month warranty and no chiller in the box.

You’re interested in distilling. Grainfather, because it documents official kits for the G40 and G70 v2. On the BrewZilla side it’s undocumented. Mind the legality caveat.

You want the longest warranty or a chiller on day one. The BrewZilla 35 L and 65 L state 5 years against Grainfather’s 3. The G40 and G70 v2 are the ones that state a counterflow chiller in the box; the 65 L’s Q&A says an immersion chiller is included.

Neither is the answer if your shed can’t take the circuit the unit you want needs and you’re not ready to pay an electrician. Drop a size tier rather than forcing the bigger unit onto the wrong power point.

Once you’ve landed on a size tier, our all-in-one comparison shows live prices across Australian retailers.