Reduce heating energy consumption and carbon emissions NOW!

EndoTherm is an easy to install, award winning, energy saving additive suitable for any wet heating system that is proven to save up to 15%

Large library of customer verified pilot studies

Suitable for Domestic and Commercial Heating Systems

EndoTherm – Energy Saving and Carbon Emission Reducing Heating System Additive

EndoTherm is a unique, multi-award winning energy saving additive independently proven to save up to 15% on space heating energy consumption.

Scalable to work in any small or large wet heating system,
EndoTherm delivers savings for both domestic and commmercial users.

Systems Heat Up Quicker…

Improved Heat Transfer…

Using Less Energy!

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Independently Proven

EndoTherm has been rigorously tested with savings confirmed by multiple third party Research & Development laboratories and facilities.

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Easy to Install

EndoTherm requires no system downtime and can be installed, like an inhibitor, in just 10-15 minutes.

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Non - Corrosive

EndoTherm is non-corrosive to heating system components in use and is non-hazardous with no discharge requirements.

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Award Winning & Recognised

EndoTherm is a multi-award winning technology with confirmed compatibility with leading boiler and inhibitor brands.

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Carbon Emission Reduction

As EndoTherm reduces heating energy consumption, greenhouse gas emissions are also reduced which is vital to achieve net zero targets.

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100% Organic

EndoTherm is made from 100% organic materials and is responsible for 0.58Kg embodied carbon which is offset in under a day of use.

The Power of EndoTherm
Demonstrated by Customer
Verified Pilot Schemes and Case Studies

We have a large portfolio of case studies across a broad spectrum of installations.

Click the buttons below to see some headline savings for both commercial and domestic EndoTherm installations.

Commercial Installs

Domestic Installs

Installation Partners:

EndoTherm-Product-Range-500ml-5L-10L-IBC

In partnership with:

CIBSE - Energy Saving Product of the Year 2016

H&V News Awards 2015 - Domestic H&V Product of the year

Ecobuild M&S Big Innovation Pitch Winner

Jon Arroyo, Energy Manager.

Rhondda Cynon Taf County Borough Council.

“Rhondda Cynon Taf County Borough Council have tried a few test cases looking at EndoTherm. We added 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%.”

Kent Rochon, General Manager.

BGIS.

“BGIS introduced EndoTherm into the hydronic system of one of our client’s buildings in the fall of 2018.

After reviewing utility usage after one year we were very pleased to see a reduction of boiler natural gas consumption usage by 14% with resulting savings of $3,836. Due to the success of this pilot project BGIS will proceed with introducing EndoTherm into other buildings within our clients portfolio.”

Stephen Vaughan, Energy Manager.

EMCOR UK

“The (EndoTherm) project 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.”

Lindsey Tourand- P.Eng, CEM, Manager, Technical Services.

Bentall Kennedy (Canada) LP.

“After fact checking reviews and technical due diligence, we decided to pilot the use of EndoTherm at one of our Calgary properties. The property had an ASHRAE Level 1 Energy audit, monthly trend data for benchmarking, and no other recent energy conservation measures in place.

We were happy to confirm 21% fuel savings after the EndoTherm treatment. Based on my experience with both the product and the group supporting it, I would readily recommend EndoTherm to any property manager interested in reducing both operating costs and environmental impact at their buildings.”

R D Bates, Director (Estates & Facilities)

Coleg Gwent.

“The EndoTherm project certainly hasn’t disappointed, installation was extremely simple, after monitoring the performance for just over 1 year the saving averaged out at 13.6% on heating consumption which also related to a significant reduction in our carbon emissions.
After our pilot and CIBSE approval this has given us the confidence to recommend EndoTherm to other potential users.”

Sadia Afrin, Commissioning Manager, Development and Asset Strategies

BC Housing.

“Relatively simple to install and on average shows greater than 5% savings in natural gas for space heating. This contributes to reduce associated energy cost and GHG savings from our buildings. The pilot was successful… and can be used in other social housing projects.”

James Page, Hotel Director.

The Wentbridge House Hotel, Restaurant & Brasserie.

“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”

Steve Hoover & Patricia Weise Hoover, Owners.

J&B Greenhouses.

“Historically the temperature was staying around one degree lower than what the system called for at nights. Within two days after installing the EndoTherm we noticed that the temperature was reading within 0.1°C of the temperature requested from the heating system.”

Mike Mamo, Director of Facilities.

East Irondequoit CSD

“Our water treatment provider introduced us to a product called EndoTherm. I was intrigued by the energy savings so I was interested in giving this a try. EndoTherm was installed easily and without any downtime to our system and has shown no negative affects to the inhibitor in our system. The energy saving was significant even though we were not using the school as we normally would have due to the COVID Pandemic.”

Martin Aizlewood.

The Rotherham 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%"

Blair McFarlane, Energy Manager.

University of the Fraser Valley.

"EndoTherm was installed into our Abbotsford and Chilliwack campus buildings in early 2018 showing a significant reduction in compensated natural gas consumption on site. We expect a return on investment in less than 18 months."

Munish Datta, Head of Plan A and Facilities Management

Marks & Spencer.

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

John Murray, Chief Engineer

Northeastern Illinois University.

“One of the many reasons we decided to use EndoTherm was the zero retrofit costs. We simply installed EndoTherm directly into your system and the savings began to accrue. NEIU also saved 300,000lbs of CO2e. It’s pretty good that you put something in, then you get results and so quickly too.”

Jayson Troupe, Facilities Manager.

Borough of Lansdale.

“The process of installing EndoTherm went smoothly with no interruption to the normal function of our building. Our goal is to save on energy costs and reduce our carbon footprint as much as we can. Thanks again for helping us reach a 12.5% savings on our natural gas usage!”

Travis Vilac, Energy Specialist

Simon Fraser University.

“The Simon Fraser University is happy with the results of the pilot. We were eager to see if the product lived up to the hype. The data shows that energy savings were achieved after Endotherm was added. The installation was straight forward and performed by a trained technician.”

Steve Bacon.

Chesterfield NHS Foundation Trust.

“Another Success for the Product EndoTherm”

Heating Engineer.

Private Installer.

"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."

Cabinet Member.

Public Housing.

"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."

Director.

Health Care Group.

"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%."

EndoTherm works in conjunction with corrosion inhibitor products, with confirmed compatibility from leading inhibitor brands like…

EndoTherm central heating additive also available at Nigels Eco Store

North Lanarkshire Council Tenants Set to Save on Heating Energy Consumption with Innovative EndoTherm Solution

Mar 26, 2025

North Lanarkshire Council has taken a bold step forward in energy efficiency by implementing EndoTherm, an innovative heating system additive, across its extensive residential property estate. The successful rollout, which began in October 2023, has already reached...

Welsh Council Pioneers Free Energy-Saving Initiative with EndoTherm

Oct 30, 2024

In a groundbreaking move to combat rising energy costs and reduce carbon emissions, Torfaen County Borough Council in Wales has launched an innovative scheme offering EndoTherm, our cutting-edge heating system additive, free of charge to eligible households.This...

MP Charlotte Nichols Explores Energy-Saving Innovation at Warrington-Based Endo Enterprises

Sep 23, 2024

Underscoring the growing importance of sustainable energy solutions, Charlotte Nichols, MP for Warrington North, recently paid a visit to local manufacturer Endo Enterprises.The visit aimed to explore how the company's innovative energy-saving products could...

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