Substituting your old gas boiler?
Substituting your old gas boiler?
When you pick out your next heating boiler there are a multitude of matters you need to take into the decision. The expense will be one leading influence but there are other factors, the amount of hot water required at any time is also significant, how cost-effective the central heating boiler is and what space you have available for the installation.
The most popular gas fired boiler types are:-
gas back boilers
Back boilers are still found in some households, being fitted in the chimney they were sheltered from view, the fire obscuring the back boiler at the back of it. If you are going to change or boiler you will not be putting in one of this type as they had certain drawbacks and in particular low water pressure, it is space-hungry and there needs to be somewhere to hide the boiler. A replacement back boiler however could be your best choice if you currently have one.
Back boilers have not been very cost-efficient in the past, but the modern back boilers are more economic now, so by swapping out an aging inefficient back boiler, you could cut your heating bills through improved efficiency.
Modern Combination gas fired boilers
The combi gas fired boiler is now the most popular type of gas boiler. As a combi heating boiler is small and it will fit into a closet and uses gas very economicaly. Because they heat water immediately from the mains, you do not have to wait for water to heat up – therefore you get a plentiful supply of hot water.
Combi boilers have better cost-efficiency than other forms of central heating boiler. As they don’t store hot water there are decreased heat losses. One disadvantage to look for is that you hot bath could run cold if somebody turns on the hot water taps in the kitchen concurrently.
Unvented central heating system gas fired boilers
Your system heating boiler will use a hot water tank to store previously created hot water. This means that you will want an airing closet or alternative space for the hot water storage tank. One benefit of this type of system is as many of the central heating system elements are built into the heating boiler enabling a faster and lower-priced installation.
Drawing several streams of hot water from diverse taps at the same time is now manageable. water pressure is elevated if the cylinder is fitted high in the home.
Open vent system boilers
a vented gas fired boiler is the normal central heating system in most peoples homes. They come with 2 water tanks to be installed in the loft., this is in addition to the hot water storage cylinder in the airing cupboard and all this takes a lot of space.
One of the attic storage tanks feeds the hot water storage tank with water from the mains.
Water expansion and contraction is accommodated by the 2nd tank in the attic. Although the hot water tank will take a while to heat up it it can supply several hot water taps concurrently.