Transform the way homes are heated with Hi-Therm®

What is Hi-Therm®?

Hi-Therm® is a bespoke thermal fluid developed and manufactured in the UK by High Tech Systems that uses nanotechnology to enhance the thermodynamic properties of water.

Hi-Therm® has been formulated to combat energy and carbon emissions in the UK’s hydronic heating sector and beyond by substituting commonly used water in radiators. The patented thermal fluid can be installed into any hydronic heating system with minimal disruption, be it a gas combi, oil fired system or a heat pump.

The improved thermal conductivity of Hi-Therm® offers up to 55% more heat transference compared to water currently used in typical heating systems.

Unlike water, which holds the same thermal conductivity regardless of its temperature, Hi-Therm’s thermal capability increases with temperature. Independently verified test results show Hi-Therm® transfers 37% more heat at 60 degrees (the average flow temperature of a heat pump) and 55% more heat at 80 degrees (the average flow temperature of a boiler).


Hi-Therm® heats up quicker and transfers more heat energy than water.


The average home in the UK emits approx. 4 tonnes of CO2 per year, Hi-Therm® will reduce this by approximately 1 tonne per year.


Increased lifespan and improved heat source efficiency. Standard sized radiators can be retained.

Patented Nano Fluid

Developed and Manufactured in the UK.


Simple hassle-free installation without the need for lengthy and costly surveys.

HI-Therm® Latest News

Innovation Awards Shortlist Badge copy.jpg

High Tech Systems are delighted to have been shortlisted for the award of ‘Engineering Innovator’ of the year 2022.

Manufactured in the UK to combat fuel poverty, Hi-Therm® is a ground-breaking innovation that is set to change the landscape of heating in the UK and beyond.


Independently verified testing has shown that Hi-Therm® saves 30% on energy/carbon compared to water in a standard central heating system.


Please support us by going to https://tiawards.co.uk/#vote

and vote for HighTech Systems Ltd

Transforming the Way Homes are Heated

Since Roman times, water has been used to heat buildings and since the widespread adoption of central heating in the 1960’s, we have used it to heat homes due to its low running cost and convenience.

Advances in technology have produced better, more efficient boilers as well as ground and air source heat pumps. However, in 60 years no concerted efforts have been made to improve the thermal conductivity of the water we are trying to heat, until now!

Hi-Therm® is the new heating hero here to help revolutionise central heating systems in the UK and beyond by significantly reducing the energy required to heat buildings, both domestic and commercial.

Hi-Therm® at FutureBuild 2022

Get in touch

Contact us for more information about Hi-Therm ® and how it can be installed into domestic and commercial applications.


We are happy to help with any type of enquiry you may have. 

Hi-Therm®  is a registered brand name of  Hi Tech Systems Ltd, registered in England and Wales Number 10946959 

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