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Selecting a substitute boiler Selecting the correct central heating boiler can be a complex project. You might start with the price but also require to think of other factors, the quantity of hot water wanted at any time is also important, how much gas the heating boiler will burn and how much space you have to install it. We have listed in the most common types of gas fired boiler below to give you extra data:- Gas gas back boilers Some homes still have back boilers, these are are normally sheltered behind a chimney, the back boiler being obscured behind the fire. If you do not already have this system then its not going to be a first option for you as the internal water pressure is low, they need a lot of space and in this type of boiler it needs to be obscured somewhere. A replacement back boiler even so could be your best choice if you currently have one. domestic back boilers have not been noted for their cost-efficiency in the past, but the modern gas back boilers are more economical now, so by replacing an aging back boiler, savings on your heating bills could be available with a more cost-efficient boiler. The latest Combination gas boilers In the last few years the combi central heating boiler has become the most popular type of gas boiler sold. As a combi gas boiler is small and it will fit into a closet and uses gas very economicaly. You will not have to wait for hot water to heat up as they heat cold water immediately - therefore you get a plentiful supply of hot water. Combi gas fired boilers use less energy than the other types. The heat loss profile is reduced as the hot water storage cylinder in other gas fired boiler systems is eliminated. Look out for somebody turning on all the hot water taps in your house whilst you are having a hot shower as it could temporarily turn cold. Unvented central heating system gas boilers central heating gas fired boilers store hot water in a hot water cylinder. This means that you will want an airing cupboard or supplementary space for the hot water storage cylinder. The installation tends to be easier and lower-priced with this form of gas boiler as the other system parts are built in. A Benefit of the hot water tank is that it facilitates the drawing of several streams of hot water simultaneously. You will also get great water pressure. Open vent system gas fired boilers an open vent gas fired boiler is the typical central heating system in most peoples households. They come with two water tanks to be installed in the attic., additional space is also required for the hot water storage tank fitted in the airing closet. The first tank in the loft feeds mains supply water to the hot water storage cylinder. The 2nd tank is the expansion and feed cylinder which maintains the right level of water for your central heating, enabling water expansion when you turn the heat on. Whilst you can now run many hot water taps simultaneously you will be restricted by the hot water cylinders capacity. David is the author of Gas Boilers Information, the web site which contains help and advice on selecting the right gas boiler. http://www.gas-boilers.org . Please have a look at the site and the detailed information on how to cur your energy bills..
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