british gas homecare

Wednesday, September 16, 2009

Selecting the best gas boiler

It is not easy Selecting a new or replacement gas fired boiler and oftentimes technical advice is necessary. cost is plainly one element but there are other considerations, the quantity of hot water required at any moment is also crucial, the space accessible in your house and how economic your new central heating boiler will be.

We have listed in the most common forms of boiler below to give you additional data:-

Gas back boilers

Back boilers are still seen in some houses, being fitted in the chimney they were obscured from view, the back boiler being obscured at the back of the fire. 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 internal water pressure, fitting requires 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 option if you currently have one.

Domestic back boilers have not been very efficient in the past, but the more recent versions are more efficient, so by changing an elderly back boiler, you could make savings in your energy usage and cut your heating bills.

Popular Combination gas fired boilers

In the last few years the combi boiler has become the most popular type of gas boiler sold. Combi heating boilers use gas sparingly and are smaller than other gas fired boiler types allowing them to be squeezed into small cupboards. Heating water direct from the cold mains takes away any wait moment for hot water - as a result you have unlimited hot water.

They are more cost-effective than other types too. The heat loss profile is reduced as the hot water storage tank in other heating boiler systems is eliminated. The downside of this is that combi heating boilers sometimes struggle to supply several hot water taps concurrently.

Unvented central heating system gas fired boilers

Your central heating boiler will use a hot water tank to store previously created hot water. This means that you will require an airing closet or supplementary space for the hot water storage tank. The other central heating system constituents to be incorporated into the central heating boiler simplifying the installation.

You can now run several hot water taps concurrently as they are provided from the hot water cylinder. You will also get good internal water pressure.

Open vent central heating system gas boilers

The most familiar home central heating system is an open vent boiler. They come with 2 water tanks to be installed in the loft., a lot of valuable storage space is needed as the hot water storage is also required in the airing cupboard.

One tank takes in water from the mains supply and feeds the hot water storage tank.

The other cylinder in the loft enables expansion of the water in the central heating system when it heats up. The only limit on hot water supply now is the capacity of the hot water tank which will take a while to heat up completely.