Things to debate when choosing a boiler
Things to debate when choosing a boiler
When you choose your next heating boiler there are a number of things you require to take into account. cost will be high on your list but you also require to think of other things, whether you will use one hot tap or several at the same moment it is to be looked at, the space accessible in your house and how economical your new boiler will be.
The most popular gas fired boiler types are listed below for your consideration:-
Gas back boilers
Back boilers are still seen in some houses, if you look cautiously in the chimney you might see the back boiler installed out of view, the back boiler being obscured behind the fire. If you do not already have this central heating then its not going to be a first option for you as the water pressure is low, they take up space to install and you will need to find a place to obscure this type of boiler. A replacement back boiler even so could be your best choice if you already have one.
In the past domestic back boilers have not been noted as being very cost-effective, but the more modern versions are more economical, so by replacing an older back boiler, you could cut your heating bills through improved efficiency.
Combination boilers
Combi boilers have become the best selling gas fired boiler type for gas central heating in the UK. They are efficient and small enabling them to be installed into small spaces. Because they heat water direct from the mains, you do not have to wait for water to heat up – and your hot water supply will be endless.
Combi gas boilers have better economy than other forms of boiler. Because combi boilers dont use an external hot water tank, there is no water tank to heat first, and no need to reheat the same water once again if youve let it run cold. One drawback to look for is that you hot shower could run cold if someone turns on the hot water taps in the kitchen concurrently.
Unvented system gas boilers
A hot water tank is used by a central heating system gas boiler to store of water. This means that the space requirements are larger. Building the other system elements into the gas fired boiler this means that installation is less complex and lower-priced.
You can now run several hot water taps simultaneously as they are furnished from the hot water tank. You can get a good internal water pressure from a central heating system gas fired boiler by putting in the hot water tank high in the house.
Open vent central heating system gas boilers
Most probably your home will have an existing open vent gas fired boiler installed. The open vent central heating boiler requires to water storage tanks to be fitted in the attic, and a hot water storage cylinder in the airing cupboard so it uses a lot of space.
The first cylinder in the attic feeds mains supply water to the hot water storage tank.
Water expands when heated and this is facilitated by the 2nd cylinder in the attic. The only restriction on hot water supply now is the capacity of the hot water cylinder which will take a while to heat up completely.