EndoTherm™ - Energy Saving Central Heating Additive

EndoTherm™ is a unique, energy saving central heating additive independently proven to save 15% on heating bills

EndoTherm™ is:


Independently Proven

Savings of up to 15% proven by a leading R&D laboratory.


Easy to Install

EndoTherm™ can be installed  in just 10-15 minutes.


Non - Corrosive

EndoTherm™ is non-corrosive and has slight inhibitor properties.


100% Organic

EndoTherm™ is made from 100% organic materials.



EndoTherm™ is suitable for any wet-based central heating systems.


And British!!

EndoTherm™ is developed and manufactured in the UK.

EndoTherm is verfied by The Energy Saving Trust

“I’m delighted with the results we’re seeing with EndoTherm in such a short period of time. The product has delivered greater savings than expected and combined with the ease of installation, it made the decision to purchase the product a very successful one. Thank you”

– James Page, Hotel Director. The Wentbridge House Hotel, Restaurant & Brasserie.

“We are now working with the winning product, EndoTherm”

– Munish Datta, Head of Plan A and Facilities Management

“Another Success for the Product EndoTherm”

– Steve Bacon – Chesterfield NHS Foundation Trust

“EndoTherm has been added to heating systems in 2 of our smaller properties for approx 2 years. The gas savings realised have been of the order of 10-13.5%”

– Martin Aizlewood – The Rotherham NHS Foundation Trust

Average Energy Bill - 2014 (£)


EndoTherm™ Saving

Typical Return on Investment (Months)

Typical Savings Per Year (£)

‘The Trials with EndoTherm™ in our boilers have been very impressive. We have noted less circulating noise and better conductivity. We will install EndoTherm™ into any central heating systems we install in the future.’

Heating Engineer

‘The trial of EndoTherm™ at our head office has demonstrated a saving of 33% compared with the same period last year. Consideration is now being given to implementing EndoTherm™ into larger sites.’

Cabinet Member, Public Housing

‘EndoTherm™ was installed into one of our properties and within days the boiler had to be turned down to compensate for increased performance. Overall consumption had been reduced by 15.6%.’

Director, Health Care Group

How EndoTherm™ Works

EndoTherm™ is a unique energy saving central heating additive, independently proven to save up to 15% on heating bills! But how does it work?

Find Out More