Features of new and substitute gas boilers
Features of new and substitute gas boilers
Selecting the correct heating boiler can be a intricate project. expense is plainly one element but there are different factors, the quantity of hot water wanted at any moment is also important, how much gas the gas fired boiler will consume and how much space you have to install it.
The main forms of heating boiler are:-
Chimney domestic back boilers
It is not uncommon to see back boilers in older housing stock, if you look cautiously in the chimney you might see the back boiler installed out of sight, the fire obscuring the back boiler at the back of it. If you are going to change or boiler you will not be installing one of this type as they had certain disadvantages and in particular low water pressure, they want a lot of space and there needs to be somewhere to obscure the boiler. Having said this your best choice could be a replacement if you currently have this type of boiler.
Previously gas back boilers had not been efficient, but lately large advances in efficiency have been made, so by swapping out an aging inefficient back boiler, you could make savings in your energy usage and cut your heating bills.
Modern Combination central heating boilers
The combi gas boiler is now the most popular type of heating boiler. They are small; fitting into cupboards, and really economical to operate. Because they heat water instantly from the water mains, you do not have to wait for water to heat up – therefore you get an endless stream of hot water.
Combi heating boilers are more cost-effective than the other gas boiler types. As they don’t store hot water there are reduced heat losses. One disadvantage to look for is that you hot shower could run cold if somebody turns on the hot water taps in the kitchen simultaneously.
Unvented central heating central heating boilers
central heating system heating boilers use a water cylinder to store hot water. You will need to find some room in the airing closet hold this. One benefit of this type of central heating system is as many of the system elements are built into the central heating boiler enabling a speedier and cost installation.
You can now run several hot water taps simultaneously as they are supplied from the hot water cylinder. system gas fired boilers tend to give high water pressure.
Open vent central heating boilers
Most probably your dwelling house will have an existing open vent boiler fitted. They come with 2 water tanks to be fitted in the loft., and a hot water storage tank in the airing cupboard so it uses a lot of space.
The hot water storage cylinder is supplied by one of the cylinders in the loft.
Water expands when heated and this is facilitated by the second tank in the loft. The only limit on hot water supply now is the capacity of the hot water tank which will take a while to heat up fully.