RA Tech UK

Revolutionising the hot water tundish

The brief

When installing unvented hot water cylinders, there are several legal requirements that must be met. Our client, a working plumber, identified that these requirements could only be met by the combination of two or more products, and set about combining the functionality of these into a single product that is less costly to the installer, more robust, and more compact than the previous solutions.


Development, Prototyping, Optimisation



With a firm solution in mind to his problem, our client carried out some preliminary prototyping, but stumbled when considering material choice, manufacturability, aesthetics and cost-engineering. We worked closely with RA Tech to ensure that all the specification criteria were established and understood, and set about meeting them using our in-depth skills in functional and aesthetic design, and extensive manufacturing knowledge.

Our solution

Through material selection and our knowledge of manufacturing and assembly techniques, we were quickly able to develop an award-winning product that met all our client’s expectations and (in some cases tricky) specification criteria.

RA Tech UK and the Hotun are seeing continued success, with the product being endorsed by Worcester Bosch, Ariston and Valliant to name a few. The design also went on to win the 2016 Travis Perkins Innovation Award, testament to its unique application and ingenuity.

Created using Figma

Your input was professional, helpful, friendly and I really enjoyed working with you. It takes quite a lot to impress me (I am a bit of a cynic at times) but you did impress me in spades. Your final design, together with all of its internals looked good and worked, as intended, straight out of the box. Would thoroughly recommend you to anyone looking for such a service.

Russell Armstrong

Managing Director, RA Tech UK

Project credits

Murray Lippiatt

Development, Prototyping, Optimisation

Adam Hiron

Design Management, Prototyping, Optimisation

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