How do
I decide which type of condensing boiler
best suits my needs?
There
are 3 different types of high-efficiency
condensing boiler:
-
Combi
-
Regular (a regular boiler is often
also referred to as a “traditional”
or “conventional” boiler.)
-
System
Each
type delivers all the benefits of
high-efficiency technology, but which
one you choose will depend on several
factors, including your property, your
lifestyle and the professional advice of
your CORGI (gas) or OFTEC (oil)
registered installer.
What
is a system boiler?
Top
Left image is an example of a central
heating and hot water system layout
using a system boiler with a pressure
hot water cylinder.
Bottom
Left image is an example of a central
heating and hot water system layout
using a system boiler with an unvented
hot water cylinder
Unlike
a combi, both a system boiler and a
regular (conventional) boiler work on
the principle of stored hot water - but
a system boiler differs from a regular
boiler in some important respects.
Firstly, many of the major individual
components of the heating and hot water
system are built in, which means that
installation is quicker, neater, easier
and more efficient.
Secondly, the hot water is pumped from
the boiler through the system to the
radiators and hot water cylinder,
resulting in a fast response and more
economical running costs. The system
boiler removes the need for a feed and
expansion cistern.
Here
are a few examples and guidelines to
think about and help you identify the
type of condensing boiler most likely
suited to your needs.
Consideration |
Most suitable boiler |
You want to use your loft space
for a room conversion or other
purpose |
COMBI |
You live in a flat or bungalow
(i.e. have very little or no
roof space) |
COMBI |
Your home has more than 2
bathrooms |
REGULAR OR SYSTEM |
Your main water pressure is low |
REGULAR OR SYSTEM |
You want to replace an old
boiler to improve an existing
conventional central heating
system |
REGULAR, SYSTEM or COMBI |
There is a need to have hot
water available on tap without
waiting for it to heat up. |
COMBI |