The central heating system is made up of different components. They all contribute and do their part to make sure that the sytem is running efficiently. Here are those components: The Pipework for most central heating systems is 15mm for the radiator circuits. There is a chance that your pipes are much bigger than this. If this is the case, then, you will probably be using an old style ‘one pipe’ system. This is where the water is moved through the loop and then to each radiator using convection. The Combination Boiler means the system has no need for tanks or pipework to be located in the loft. A very economical bit of kit, because you only heat the water that is used. The not so good feature is that, although the water coming for the hot tub is really hot, it is a slow flow rate. A great idea for a small apartment or flat. The Circulation of water in a system’s pipework and radiators is normally done using a pump and electrically controlled valves that force the water through a cylinder. An NW4 Plumber is a qualified tradesman. Maintenance for these systems is not too difficult. The heating systems obviously contain lots of water, that, can of course cause the pipes to rust (particularly for radiators). This rust produces a dark muddy mess that sits in the bottom of the radiators reducing their efficiency. You can purchase chemical additives and solutions to clean through and protect the systems. NW4 Plumbers can carry out maintenance and servicing schedules. A Sealed Central Heating System allows the water to expand when heated using an expansion cylinder. Should this be fitted to your home there should be a small pressure gauge fitted on your central heating boiler that gives a reading of the pressure. “