Frequently Asked Questions

Below are some of the common questions asked about EndoTherm
How Much EndoTherm Do I Need?

Domestically An average 10-12 single radiator home requires one 500ml bottle of EndoTherm. If your home is larger than average (or has more radiators/underfloor heating) you will require 1 litre (2 x 500ml bottles).

Commercially 1 litre per 100 litres of system volume. Our Experts can calculate exactly how much EndoTherm will be required to maximise the potential return on investment.

If you have any concerns about how much EndoTherm you may require please contact us for assistance.

Does EndoTherm work in any heating system?

Yes, any heating system where a boiler is used to heat water EndoTherm will work

How long does EndoTherm last?

EndoTherm will remain in a closed central heating system without any deterioration of energy savings for at least 4 years, according to tests.

How do I install EndoTherm?

EndoTherm can be added to a system using a feed and expansion tank or via a partially drained radiator.Click here for our full installation guide.

Does EndoTherm need to be re-installed after a drain-down, for instance when the property is void, or when new radiators or a boiler are installed?

Yes. EndoTherm will need to be re-installed after a drain-down, or if the radiators or boiler are changed.

Should EndoTherm be applied to a clean or existing filled system?

EndoTherm performs both on an existing system with clean or dirty water and also on a new clean system. On a clean new system that has just been installed you will need to flush first before installing EndoTherm. From the various installations the manufacturer has carried out, the systems that achieve the highest energy savings are those that have been flushed first.

Can EndoTherm work with or without an inhibitor and cleaner?

EndoTherm compliments inhibitor products. This applies to systems already dosed with an inhibitor and systems where an inhibitor is introduced after EndoTherm has been installed. EndoTherm has some inhibitor properties itself and functions alongside inhibitors without issue.

Is EndoTherm dangerous?

EndoTherm is not dangerous to touch. It has the official classification of a “mild irritant” but carries no hazardous threat.

Can EndoTherm be used in an open vented system?

Yes, EndoTherm can be used in both closed and open wet based central heating systems. For open vented systems, we recommend you increase the dosage by 10% for optimal performance.

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