Condensing boilers
get their name because they condense periodically. In other words,
they extract heat from the exhaust gases that would otherwise escape
through the flue - turning water vapor from the gas back into liquid
water or condensate.
A condensing boiler
captures much more usable heat from its fuel than a non-condensing
boiler. Its high operating efficiency is made possible by the design
of the condensing boiler's larger - or sometimes dual - heat
exchanger.
The heat exchanger
makes sure that as much heat as possible is transferred from the
boiler's burner - and as little as possible lost in gases through
the flue.
There are two types
of condensing boiler: regular and combination. Regular
condensing boilers heat your hot water through a hot water cylinder.
Combination condensing boilers give you instant hot
water without the need for a cylinder.
The best temperature
for boilers to condense is between 55 & 57 degrees Celsius, this
is all taken care of by the boilers in built computer.