Looking at the boiler.

A way of checking which type of heating system you have is to make a note of the model number on the boiler and contact the maker. Be very specific, list the model, year, and any code numbers. Bear in mind that it is possible that the boiler has been part replaced, so for example while the casing may be original, just about everything else could be a replacement.

Water circulation.

In some houses, the water in the radiator pipes is circulated through the hot water cylinder by gravity (convection), while in others a pump and electric valves are used to force water through the cylinder. Greenford Plumbers know all about systems.

Pipework.

Most central heating systems use 15mm pipe to the radiators. If your pipes are much larger than this, you may have an outdated ‘one pipe’system, where the water is pumped around the loop and diverted to each radiator by convection.

Sealed and central heating systems.

Sealed central heating systems have an expansion cylinder that allows for the water to expand as it heats. If you have this type of system, there will be a small pressure gauge somewhere on your central heating boiler.

Maintenance.

Central heating systems are filled with water, which can cause rusting in the radiators. A black sludge gathers at the bottom of the radiators, reducing their efficiency. There are chemical additives available for cleaning out of the system and for protecting it once it has been refilled. A Greenford Plumber can carry out all types of maintenance.

Advantage of a combination boiler.

A combination boiler system does not require tanks and pipes in the loft. It is economical because you only heat the water you use. The downside is that, while the water coming from the hot tub is really hot, the flow is somewhat slow. This is a good setup for a small flat.

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