Need a new central heating boiler?
Need a new central heating boiler?
When you choose your next gas boiler there are a number of matters you need to take into account. expense is plainly one factor but there are other considerations, you will want to appraise when and how much hot water you will use at any moment, how much space you have in your house and loft together with how much gas gas boiler will use up over its life-time.
The primary gas fired boiler types are:-
domestic back boilers
If you live in an aging dwelling house you might have a back boiler installed, these back boilers were often installed in the chimney space out of sight, the coal fire often hid the back boiler which was behind 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, fitting requires a lot of space and there needs to be somewhere to obscure the boiler. Having said this your best choice could be a substitute if you currently have this type of boiler.
gas back boilers have not been noted for their economy in the past, but big advances have been made over the past 5-10 years, so by replacing an aging back boiler, you could make savings in your energy usage and cut your heating bills.
The latest Combination heating boilers
Combi heating boilers have become the best selling gas boiler type for gas central heating in the UK. They are small; fitting into cupboards, and really economical to operate. Heating water direct from the cold mains takes away any wait moment for hot water - thus you get an endless stream of hot water.
A combi is also more cost-efficient than other types of gas boiler. The heat loss pattern is reduced as the hot water storage cylinder in other heating boiler systems is ruled out. However, for this same reason - the lack of a hot water storage cylinder - your hot bath will be interrupted if anybody else starts running the hot water in your home simultaneously.
Unvented central heating gas fired boilers
Your system central heating boiler will use a hot water cylinder to store previously created hot water. You will require to find some room in the airing closet hold this. One advantage of this type of system is as many of the central heating system components are built into the gas fired boiler enabling a speedier and cost installation.
You can now run several hot water taps concurrently as they are furnished from the hot water tank. If the hot water cylinder is fitted high in the house you will also get great internal water pressure.
Open vent central heating system central heating boilers
The most familiar household central heating is an open vent heating boiler. If you have one of these you will want to water cylinders to be installed in the attic, the airing closet is still required for the hot water storage cylinder and overall this takes a deal of space.
The first tank in the attic feeds mains supply water to the hot water storage tank.
The 2nd cylinder is the expansion and feed tank which maintains the right level of water for your central heating system, enabling water expansion when you turn the heat on. Showers, taps and running baths can be run in any room simultaneously, but be aware that if the tank should become cold it will take a while to reheat.