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Hario Kettle Comparison: Which Model is Best? (With Pictures)

Hario kettle comparison

If you want to brew the perfect cup of pour-over coffee (and let’s be honest, why wouldn’t you?), you will need the right equipment. The best equipment for pour-over includes a high-quality gooseneck kettle, which lets you control the water flow for ideal extraction. But how do you find the right gooseneck kettle?

Today, we’re looking at four of Hario’s pour-over kettles. Hario is famous for its V60 pour-over (see our review here), and the company makes quite a few kettles to go with it. We decided to put them to the test. Which model will win? Keep reading to find out!

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Hario Kettles: The Competitors

We decided to test some of Hario’s most popular pour-over kettles. The kettles we are looking at are all stovetop or hot water-only models — though Hario also makes several kinds of electric kettles. Scroll down to learn all about the Buono, Tetsu-Kasuya Mini Drip, Smart G, and AIR kettles.

The Hario Buono Kettle (VKB-100)

Hario Buono kettle

Capacity: 1000 milliliters (33.8 ounces)
Materials: Stainless steel, plastic
Stovetop-safe:  Yes
Dishwasher-safe: Yes

The Hario Buono kettle is specially designed for the V60 pour-over brewer. It has a rippled stainless steel body and a long gooseneck spout, designed to give you full control over the water flow. There’s also a large, comfortable plastic handle and a lid that’s easy to remove.

One of our favorite features is the rippled design, which is very attractive and doubles as a water-measuring tool. This kettle is also compatible with all kinds of stoves, including gas, electric, and induction.

Read our full review of the Hario Buono kettle.

  • Boils quickly on any kind of stove
  • Elegant, streamlined design
  • Sturdy stainless steel build
  • Loose lid
  • More expensive

The Tetsu-Kasuya Mini Drip Kettle (KDK-300)

Hario Tetsu-Kasuya Mini Drip kettle

Capacity: 350 milliliters (11.8 ounces)
Materials: Stainless steel
Stovetop-safe:  No
Dishwasher-safe: Yes

The Tetsu-Kasuya Mini Drip Kettle is part of a line designed by the winner of the 2016 World Barista Championship. Tetsu Kasuya, a Japanese barista, won using his 4-6 method, which involves pouring 40% of the water in the first two pours and then dividing the remaining 60% into the final pours. This kettle is designed to make this process easier — along with the other products in his line, including a specially designed V60 pour-over brewer.

This kettle can’t be used to heat water, so you’ll have to boil water separately and then transfer it before brewing. That makes it more of a specialty tool, useful if you’re trying to perfect your pour-over technique, but less helpful if you just want to brew a decent cup of coffee.

  • Sturdy and portable
  • Easy to clean
  • Very affordable
  • Designed for the 4-6 V60 brewing method
  • Choice of three colors
  • Less durable coating
  • Can’t boil water
  • Less comfortable handle
  • No lid

The Smart G Kettle (DKG-140)

Hario Smart G kettle

Capacity: 1400 milliliters (47.3 ounces)
Materials: Stainless steel, silicone rubber
Stovetop-safe:  Yes
Dishwasher-safe:  No

The Hario Smart G kettle is a large stovetop kettle with a stainless steel body and a silicone rubber handle. It boils quickly and quietly on any kind of stove and boasts a long S-shaped gooseneck spout. With a 43.7-ounce capacity, you can brew pour-overs for a crowd!

One of the coolest features of this kettle is its compatibility with a thermometer. The knob on the lid has a removable stopper, which can be replaced with a thermometer. You’ll be able to measure your water temperature without opening the lid! When you’re not using the thermometer, you can attach it to the handle. The only downside? The thermometer doesn’t come with the kettle.

  • Compatible with a thermometer
  • Elegant, well-balanced design
  • Large water capacity
  • High-end materials
  • Less portable
  • Doesn’t include the thermometer
  • More expensive

The V60 Drip Kettle AIR (VKA-35)

Hario AIR kettle

Capacity: 350 milliliters (11.8 ounces)
Materials: Plastic
Stovetop-safe:  No
Dishwasher-safe: Yes

This model is a simple plastic kettle that’s conveniently dishwasher-safe and very easy to use. The V60 AIR drip kettle is not a stovetop model, so you have to separately heat the water and then transfer it. We found the handle comfortable, and the markings on the side made measuring water very easy. It has an interesting beak-like pouring spout that works surprisingly well. Plus, it won this year’s Good Design Award!

  • Very lightweight
  • Comfortable handle
  • Dishwasher-safe
  • Easy to read measurement markings
  • Can’t boil water
  • Small capacity
  • Less elegant design
  • No lid

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Testing the Hario Kettles

1. Boiling the Water

Only two of these kettles are stovetop-safe: the Buono and the Smart G. We put them head-to-head, filling each with 300 milliliters (10 ounces) of water and placing them side-by-side on gas burners. They took about the same amount of time to boil (though the Buono was slightly faster), and both made a quiet humming sound while heating up.

boiling water Hario kettles

Though Hario warns you that the handles may become hot, we found that neither did. The Buono’s handle was slightly warmer, but still safe to touch, and the Smart G’s silicone handle was perfectly cool.

2. Pouring the Water

Now it’s time for the big test: how well do these pour-over kettles pour water? The key things we’re looking for are control over the water flow, water capacity, and comfort. We want kettles that are comfortable to hold!

Water Flow

Which kettle was easiest to pour? We enjoyed pouring all of these kettles. They’re well-balanced and lightweight, with elegant designs that allow for excellent control. We did have a favorite, though! Our favorite kettle for water flow control was the Smart G, followed closely by the Buono. These kettles pour very smoothly, and even if you tip your hand far forward, the water flow remains smooth and narrow.

Hario kettle pouring water
Clockwise from top left: the Hario Buono, the Hario Mini Drip, the Hario AIR, and the Hario Smart G kettles.

The Mini Drip kettle also pours well out of a very small spout. And the AIR is easy to pour, but because it doesn’t have a traditional gooseneck spout, the water flow can be disrupted if you pour too quickly.


As for the water capacity, the best kettle depends on your brewing method. If you’re brewing a small 4-ounce cup, any of these kettles will be large enough to brew without having to refill. But if you’re brewing more coffee, like a six-cup Chemex, you’ll have to refill the smallest kettles.

Hario Buono kettle review

The Buono and the Smart G will both hold plenty of water for most pour-over brewing methods. You won’t have to boil another round partway through, disrupting the timing of the pour-over process. If you want a kettle that can boil water for a crowd, the Smart G is for you.

On the other hand, if you usually brew one or two cups of pour-over coffee, you may appreciate the small size of the Mini Drip kettle or the particularly portable AIR. These kettles each hold about 12 ounces of water, so you’ll be able to brew several small cups of coffee or one larger cup.


Our final consideration is how ergonomic the handles are. When you’re brewing the perfect pour-over coffee, you have to pour multiple careful rounds of water. Having a kettle that’s easy to hold will simplify this process immensely.

Hario kettle handle comfort
Clockwise from top left: the Hario Buono, the Hario Mini Drip, the Hario AIR, and the Hario Smart G kettles.

So which kettle was most comfortable to hold? We liked the Smart G, which has a very comfortable silicone-covered handle that’s large enough to accommodate many hand sizes. Our least favorite was the Tetsu-Katsuya Mini Drip, which has a very small handle with thin edges.

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Our Favorite Hario Kettles: The Bottom Line

Which Hario kettle should you choose? We recommend the Smart G if you’re looking for a well-designed gooseneck kettle that will work on many types of stoves. It has a large enough capacity to brew multiple cups at a time, the handle is comfortable to hold, and the kettle feels very well-balanced when pouring.

You may prefer the Hario Buono kettle if you want a less expensive option that’s still beautifully designed. The Buono works especially well for the V60 pour-over and boils quickly on the stove.

If you already have a favorite stovetop or electric kettle and want a gooseneck kettle just for pour-over brewing, you may be interested in one of the other two kettles. Want to perfect your technique with a kettle designed by a barista champion? You’ll love the affordable and elegant Tetsu-Kasuya Mini Drip kettle. Prefer a portable model that allows for easy measuring? You’ll love the very inexpensive Hario AIR kettle, a plastic option that pours beautifully.

Whichever Hario kettle you choose, your next pour-over is sure to come out perfectly!

SEE ALSO: What are the best coffee beans for pour-overs?


Kate MacDonnell

Kate is a lifelong coffee enthusiast and homebrewer who enjoys writing for coffee websites and sampling every kind of coffee known to man. She’s tried unusual coffees from all over the world and owns an unhealthy amount of coffee gear.

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