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. Experts from Endo Enterprises 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.