UK & Europe: +44 (0)1925 747 101 - Global: 778-895-1990

How Does EndoCool Save Energy and Reduce Carbon Emissions?

Powered by EndoTherm technology, EndoCool dosed into any chilled water system improves cooling contact and efficiency.

EndoCool is powered by EndoTherm and part of the EndoTherm family of products.

Like with EndoTherm, EndoCool works by changing the physical and thermal properties of water to improve the cooling transfer efficiency and performance of HVAC chilled water systems.

A unique formula reduces the surface tension of system fluid by over 60%. A reduction in surface tension is known to make water ‘wetter’.

EndoCool increases the wetted perimeter or cooling contact area on the inside of the cooling system, increasing and enhancing cooling transfer.

After EndoCool is dosed surface tension is reduced improving chilled thermal contact

EndoCool provides the following benefits:

  • Improve chiller system efficiency, performance & save energy.
  • Cool down chilled water systems quicker & reach set temperatures faster.
  • Reduce chiller approach temperatures (between condenser & chilled water loop).
  • Increased ΔT between flow and return temperatures.
  • Reduce chiller run times to maintain thermostatically controlled temperatures.
  • Reduce compressor workloads, pumping loads & pumping conditions.
  • Work synergistically with or without glycol antifreeze.

EndoCool’s affect on system fluid surface tension has been confirmed using a K11 Kruss Force tensiometer.

The K11 force tensiometer measures the surface tension and interfacial tension based on the force which acts when a measuring probe is wetted.

The instrument features a high-quality force sensor which ensures accurate results and high reproducibility.

The laboratory at University of the West of Scotland, using the K11 tensiometer device, confirmed EndoCool reduces system fluid surface tension by over 60%.

University of the West of Scotland Kruss Force Tensiometer

A reduction in surface tension is known to make water ‘wetter’

A stable reduction in cooling system fluid surface tension via EndoCool treatment increases the wetted perimeter or cooling thermal contact area of the cooling fluid inside the system.

Surface contact increases and enhances cooling transfer where fluid and surfaces interface.

University of the West of Scotland, also established a test cell with a digital thermometer allowing thermal transfer to be measured in constant fluid flow.

Examination showed EndoCool dosed fluid cools much faster than compared with water alone. Testing showed EndoCool treated fluid liberates thermal energy much quicker through improved thermal transfer.


Analysis of EndoCool’s effect on common system materials of construction (including steel, copper and aluminium) showed less corrosion detected with EndoCool dosed water than hard and soft water alone.


Tested over 1,008 hours EndoCool dosed water showed minimal to no impact on EPDM rubber.

EPDM rubber is commonly used for sealants in a heating or cooling system.


EndoCool has been tested and approved to be compliant with freeze protection and corrosion inhibitor products.

All products, including EndoCool continue to function as expected. 

Institute of European Environmental Policy dictates EndoCool is not hazardous waste

EndoCool is not regarded as hazardous waste as defined by EU Directive 91/689/EEC (No Discharge Requirements)

EndoCool is an organic substance which poses no hazardous threat.

Get in touch with the EndoCool team

UK & Europe

Telephone: +44 (0)1925 747 101

USA, Canada & Rest of the World

Telephone: 778-895-1990

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EndoCool is part of the EndoTherm product family and a registered product of Endo Enterprises (UK) Ltd.
EndoTherm is an energy saving additive for heating systems
Endo Enterprises (UK) are experts in water treatment solutions.
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