Features of new and replacement central heating boilers
Features of new and replacement central heating boilers
It is not easy Picking Out a new or substitute heating boiler and frequently good advice is necessary. The cost will be one major influence but there are other factors, whether you will use one hot tap or several concurrently it is to be studied, how economical the central heating boiler is and what space you have accessible for the installation.
The main forms of gas fired boiler are:-
Chimney domestic back boilers
In the past gas back boilers were frequently fitted in households, being fitted in the chimney they were sheltered from view, the coal fire often hid the back boiler which was behind it. These are now only fitted as a replacement and they have some drawbacks such as low internal water pressure, it is space-hungry and you will want somewhere to conceal your boiler. If you currently have a back boiler however a straightforward substitute could be your best option.
In the past domestic back boilers have not been known as being very cost-efficient, but the more modern versions are more cost-efficient, so by replacing an older back boiler, savings on your heating bills could be available with a more cost-effective boiler.
Combination gas fired boilers
The most popular type is now the combi heating boiler. Combi boilers are small enabling them to be squeezed into cupboards and they are cost-efficient. They also heat cold water directly meaning that you do not will have to wait for a hot water cylinder to heat up – consequently you get a plentiful supply of hot water.
Combi gas fired boilers are more economical than the other gas fired boiler types. As they don’t store hot water there are diminished heat losses. The downside of this is that combi gas boilers sometimes struggle to supply several hot water taps concurrently.
Unvented central heating system gas fired boilers
system heating boilers store hot water in a hot water cylinder. You may need to install this in the airing cupboard taking up precious space. The other central heating system elements to be incorporated into the boiler simplifying the installation.
Getting various streams of hot water from diverse taps simultaneously is now possible. system central heating boilers tend to give high internal water pressure.
Open vent central heating gas fired boilers
a vented central heating boiler is the normal system in most peoples homes. 2 water cylinders will be fitted in the loft with an open vent central heating boiler, the airing closet is still required for the hot water storage tank and overall this takes a lot of space.
The hot water storage cylinder is supplied by one of the storage tanks in the attic.
Water expands when heated and this is facilitated by the 2nd cylinder in the loft. Although the hot water cylinder will take a while to heat up it it can supply many hot water taps concurrently.