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RA Tech UK Ltd

Award Winning Market Leaders: Designed by an installer for installers
Tel: 01332 702678  
Team Members

Russell Armstrong,
MD and Inventor of hotun

Ally Armstrong,

Robin Miller,
IT and Operations Manager

About RA Tech UK Ltd

RA Tech UK Ltd, market leaders and pioneers of the award-winning hotun dry trap tundish concept and creating solutions to some common industry problems, saving installers up to 3 hours of their time when installing a boiler on an internal wall by using a hotun and helping to save water and energy by highlighting if things start to go wrong, not to mention saving money all round on shorter pipe runs.  All products are fully compliant and fully visible at point of diagnosis.
Simplifying both new and retrofit installations on boilers and unvented water heaters and cylinders.  RA Tech’s latest innovation, hotun detect – the world’s first in-tundish water detection and temperature sensing, clip on, battery operated PRV discharge warning alarm system, winner of the HVR Awards 2020 for Ancillary Product of the Year.
Professional plumber, heating, ventilation and air conditioning design engineer, Russell Armstrong (Mciphe), MD of RA Tech UK Ltd, (the manufacturers of hotun products), invented the hotun range of dry trap tundishes back in 2013 and has fast become the industries go-to option for a relief valve discharge to an internal drain or soil pipe, and more recently (2019) the hotun detect alarm unit!
Tens of thousands of installers and professionals are now fitting the revolutionary range of hotun dry trap tundishes, enabling the installers, to run a heating or hot water system, temperature and/or pressure relief discharge pipe to an internal waste or soil pipe compliantly in a one-product solution, saving the installer many headaches, time and money.  We call this “the hotun revolution”.

hotun is unique, it is the only dry trap tundish on the market that has visible water at the point of diagnosis amongst many unrivalled features and benefits, and with our latest innovation, hotun detect, takes that concept to a newer, higher level!
Patented – Pioneering – Products


Read the hotun blog

Social Media


hotun detect wins HVR Awards 2020! 
hotun detect reaches finals of HVR Awards 2020 in two categories;

Domestic Product of the Year
Ancillary Product of the Year
and goes on to WIN the award for Ancillary Product of the Year 2020
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hotun detect –
ASCP Product of the year Highly Commended Finalists 2021!
We are proud to announce that hotun detect has gained the accolade of being the Highly Commended Finalist in the ASCP (Association of Safety and Compliance Professional) Safety and Compliance Awards finals in the Product of The Year category!
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hotun detect gains finalist status in, arguably, the UK’s most prestigious HVAC industry awards!
In the 2021 awards, in the Domestic Product of the Year category, hotun detect has gone through to the finals.
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hotun detect gains further plaudits!
hotun detect has gained further recognition in the 2021 Energy Awards

Alongside some very credible competitors, we have got through to the final of this competition in the “physical technology of the year” category.
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