RadREST (powered by EndoTherm)

Energy & Gas Saving Central Heating Additive

The RadREST programme is a unique, energy & gas saving central heating additive independently proven to save 15% on heating bills

Independently Proven

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

Non – Corrosive

A non-corrosive and has slight inhibitor properties.


Suitable for any wet-based central heating systems.

Easy to Install

The RadREST programme can be installed  in just 10-15 minutes.

100% Organic

Made from 100% organic materials.

And British!!

Developed and manufactured in the UK.

Rhondda Cynon Taf County Borough Council have tried a few test cases looking at RadREST (powered by EndoTherm.) We added RadREST (powered by EndoTherm) into a variety of buildings with no other changes. We have discovered that radiators reported as hotter (from people unaware of what we have done) and a reduction in consumption between 12-21%.

– Jon Arroyo, Energy Manager. Rhondda Cynon Taf County Borough Council.

The (RadREST) programme certainly hasn’t disappointed, installation was extremely simple and savings have by far exceeded our initial expectations. The installation at Lingley Mere has been a huge success and is continuing to realise savings month on month.

– Stephen Vaughan, Energy Manager. EMCOR UK.

I’m delighted with the results we’re seeing with RadREST (powered by 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, RadREST (powered by EndoTherm)

– Munish DattaHead of Plan A and Facilities Management

Another Success for the Product RadREST (powered by EndoTherm)

– Steve BaconChesterfield NHS Foundation Trust

RadREST (powered by 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 AizlewoodThe Rotherham NHS Foundation Trust
Average Energy Bill - 2014
RadREST Saving
Typical Return on Investement (Months)
Typical Savings Per Year

“The Trials with the RadREST programme in our boilers have been very impressive. We have noted less circulating noise and better conductivity. We will install RadREST (powered by EndoTherm) into any central heating systems we install in the future.”

Heating Engineer

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

Cabinet Member, Public Housing

“RadREST (powered by 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 The RadREST Programme Works

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