Boilers come in many shapes and sizes, with them all doing the same job, just in a slightly different way. There are things for you to think about if you are looking to change your current boiler either by choice or necessity, as you need to make sure that the boiler you are considering is correct for your requirements like:1). Look how much space you have to accommodate a new boiler.2). Remember that the boiler will come with pipework and cylinders etc.3). Look in detail at the energy efficiency information for each type of boiler.4). Take the cost of servicing into consideration. 5). Be aware boilers operate on various fuels like: LPG, oil, gas, solid fuel and of course electricity. Note:Professional plumbing services such as Croydon Plumbers are qualified to carry out boiler installations are a good option.Boiler Types:A). Condensing Type:The design means that the water returning from the heating system cools the flue gases. This has the name High Efficiency type of system and is best with lower water temperature in the system. This is a very efficient boiler. They are available to operate with fuels like, gas, LPG or oil. B). Back Boiler:This design is very old now and is not fitted in new build houses. They sat behind open fireplaces. They also provided hot water from a heat exchanger. A Croydon Plumber is trained on all types of boilers.C). Conventional Type:This type of boiler comprises of two separate vessels, with the first a large cold-water storage cylinder and the second is something called a feed and expansion tank. The cylinder is mains fed, heated by the boiler, and provides the domestic hot water supply, and feed to the central heating circulating pump.D). Combination or Combi:This type is also a multi-point style of boiler as well as a central heating boiler. Providing hot water from a cold water mains supply as required to the taps all through the house.