Condensing the vapour

Condensing

The term 'condensing' is derived from the creation of condensation within the heat exchanger or flue. This liquid will need to be conveyed away to a drain via a plastic discharge pipe run by the installing engineer. When combustion of any kind takes place water vapour is always produced. In a 'standard efficiency' boiler the flue gas temperature is kept relatively high to avoid condensation and its related issues. But in a high efficiency boiler, so much of the heat produced in the combustion process is absorbed by the heat exchanger into the heating water and very little is wasted to the atmosphere via the flue, hence less fuel is burned to achieve the same results but the consequence is condensation which is dealt with in the appropriate manner.