If your central heating system has been fitted for quite some time there will probably be a large buildup of gunk living inthe system. This is made up mostly of corroded metal. The great thing about this is that the metal is actually magnetic, and since it tends to bind to pretty much all of the debris in the system, this then means that nearly all the detritus that kills off your central heating can be removed by using a magnet. There are quite a few companies who now make magnetic cleaners for central heating systems but have also added some other bits and bobs to the basic mechanism. Pentonville Plumbers fit magnetic kits.

They are not very difficult to fit:

Firstly you need to drain your central heating system, then, cut into the pipework at a convenient location. This will usually be on the return pipe below the boiler. You then fit the cleaner kit along with its isolation valves. The fitting of the system should be done by following the manufacturers instructions which are really quite basic and easy to understand. Pentonville Plumbersx understand magnetic cleaners.Once you fit the kit it is just a case of refilling the system and re- commissioning. There are however many variations on this theme so make sure you install the one that is correct for you. Once fitted you just need to remove and clean the magnet occasionally, this will probably be once around the three month period initially. However, once a year thereafter should be fine. Most of these cleaners can also be used to add an inhibitor to the system. Just isolate them at their valves open them up. Drain the contents of the container. Add your inhibitor. Close up again, open the isolation valves and hey presto. There often worth buying for this reason alone.
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