Unlock Energy Efficiency for your building:

Save 15% with our energy saving solution!

It is our mission to make every building, home and office in the Benelux sustainable using our energy saving solution.

Contact us to see how we can help making your building more sustainable.


Saves up to 15%

Saves up to 15% on your energy consumption and therefore heating bill

Reduces CO2

Reduces your CO2 emissions significant with up to 15%, making your footprint smaller and the world a better place.

Breakeven in 2-3 years

There is no better sustainable housing investment that has a better return-on-investment.

100% organic

The product is made of only organic materials and therefore is not hazardous for disposal

Easy to install

The product can be installed within an hour and does not give any downtime to your system


EndoTherm is an energy-saving additive for heating systems, which saves up to 15% on your energy consumption and costs

Add EndoTherm to the water of your closed heating system.


The ratio should be 1% EndoTherm and 99% water.

It is easy as that! After an installation of less than an hour, you immediately have a more energy efficient building.


Discover the Impact EndoTherm Has Made According to Our Valued Customers!

“RCTCBC have tried a few test cases looking at EndoTherm.
We added EndoTherm into a variety of commercial and domestic 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 12-28%. Based on our positive results, we decided to roll-out EndoTherm across our estate.”

Energy Manager

Rhondda Cynon Taf County Borough Council

Cllr Chris McFarling, portfolio holder for the Climate Emergency said: “This is one simple, effective change which has resulted in an immediate effect in lowering our emissions. In line with the energy hierarchy the council is working to reduce energy demand through behaviour change and improve the efficiency of heating systems through trials such as this. In July 2020 the council also undertook a full energy audit of its office building to investigate further opportunities for energy efficiency measures. The next step is to source the remainder of our energy from low carbon and renewable sources.”

Chris McFarling

Forest of Dean

“The EndoTherm pilot has proven to reduce our energy consumption within the boarding house. As a result, we have reduced the amount of carbon generated to assist in our ambition to achieve ‘Net Zero’ and we have made cost savings against our annual energy spend. Our next step, is to rollout EndoTherm to all of our other wet heating systems.”

Energy Manager

Independent School

“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.
Now being tested and CIBSE approved this has given us the confidence to recommend EndoTherm to other potential users.”

Director (Estates&Facilities)


“In April 2015 NATS Facility Management introduced EndoTherm and Glycol into its Prestwick Centre heating system. The results have been impressive, 16% reduction in energy and a CO2 reduction of 46 Tonnes..”

Facilities Team


“EndoTherm has been active in the heating systems of two of our smaller properties for approx 2 years. The gas savings realised have been in the order of 10-13.5%. The results are there to be seen.
When circumstances allow, this product will also be installed into the main site heating system. Everyone connected with the company has been friendly, professional and helpful at all times and a pleasure to deal with.”

Estates Officer, Energy & Special Projects

The Rotherham NHS Foundation Trust

“Another success for the product EndoTherm!”

Energy Manager

Chesterfield NHS Foundation Trust