High pressure water systems

If you have a hot water tank (cylinder), usually found in your airing cupboard, but you don’t have a cold water tank (cistern) in your loft or garage, this is an unvented high pressure system. This can look similar to a low pressure system so check carefully to avoid confusion. Also take caution in refurbished houses with disused water tanks.

If you have a Combination (Combi) boiler which heats water on demand so there is no hot water storage cylinder or cold water tank, you have a high pressure system. If you have either of these two set-ups, simply choose from our extensive range of High Pressure showers indicated by the relevant symbol illustrated above (H or A).

Low pressure water systems

If you have a cold water tank (cistern) in your loft and a hot water tank (cylinder) in your airing cupboard, this is a gravity-fed system. It’s the most common household plumbing system and means you have a low pressure water system. Having low pressure need not limit your choice of shower type. If your hot water cylinder is large enough, simply choose from our extensive range of Low Pressure suitable showers indicated by the relevant symbol illustrated above (L or A).

If your hot water cylinder is large enough and you want a more powerful shower, it is possible to boost your system with a pump (see page 75 for details).

Cold mains

All our Electric showers can simply be connected to a cold water mains supply, simply choose from our extensive range of Electric showers indicated by the relevant symbol illustrated above (C).

If your cold mains does not have the required regulated minimum pressure, select the T90xr pumped electric shower or the T450i separate booster pump to feed from a cold water tank (cistern) in your loft (see pages 31 and 75 for product details).