The first real alternative.

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Made in Germany.

Designed for the world.

As a tea lover and father of two children, I analysed the way we heat liquids every day, in every kitchen, all over the world - and I realised how many resources are being wasted in the process. It is time for a sustainable alternative.

David Riding, co-founder

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Image by Alexander Schimmeck

Waste of resources.

Kettles.

Microwave ovens.

Baby bottle warmers.

Sous vide sticks.

Egg cookers.

The list goes on. These electrical devices are cheap, very limited in their application and 85% never get recycled - they end up in the landfill.

Bold idea. Big challenges.

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Everyone talked about it.

We did it.

The idea to combine induction and immersion was initially proposed by a German industry giant in a patent from 1997. Since then, many have tried to bring it to life - from startups like Miito to massive corporations like Groupe SEB. The concept sounds simple, but is incredibly tricky to realise.

In 2019, 22 years later, we managed to create the world's first working prototype - heatle was born.

Small target

The heatle disc area is 16x smaller than a standard 16cm pot. Focusing up to 2kW of power into such a tiny object is key to making the device convenient and efficient.

Dynamic target

Unlike cooktop pots, cups have varying thicknesses, widths and curvatures. Plus the disc moves around as bubbles form below. Keeping it down and centered is key.

Condensed power

Making large appliances isn't hard, but your kitchen is stuffed. With only Ø18cm, heatle is the world's smallest induction cooktop, but aimed at liquids. It fits everywhere.

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Patent-pending solution.

With heatle, we are proud to be the first in the world to have overcome all enormous tech challenges. We applied for 3 world patents for technologies which enabled us to create the world's first working device of its kind.

 

Not just different. Superior.

Kettle

We overfill kettles every day, wasting water and energy. Kettles are loud, calcified, too heavy for the elderly and disabled and waste up to 60% energy on single servings.

Induction

Induction cooktops are efficient, but are not designed to heat liquids easily and to a certain temperature. You still have to clean the burned milk from the pots.

Immersion

Invented in Germany, just like heatle, immersion heaters are efficient by design, but there are safety issues, no proper °C measurement and they only heat water.

Microwave

Those huge ovens can be used for liquids, but... how many seconds and watts do you need to get 37°C warm baby milk? For single cups it's the most inefficient device.

Waste of energy.

Each model was powered at 220VAC. 250ml of water (1 large cup) were boiled until turn-off. The tests were repeated 10 times and an average was taken. Further details in this video, including 500ml and 1000ml results.

Efficiency = how much energy wasn't wasted and actually went into heating your drink
= kWh required*/ kWh used
*  = (4.184J/g°C * °C delta * 250g) / 3600000s