Gainsborough 10.5 CSE Electric Shower

Thecover is slightly different but the fixings and connections are the same

Unless you have someone to check your wiring and fuse then you really need to stick with something the same rating as you have at the moment.

There should be a plastic sticker on the underside of the cover and/or inside the unit, also it is stamped into the top of the heating can although this may be difficult to see.

Unfortunately there is nothing that will be a direct swap.

However....... Triton has recently brought out the T80Z this shower has been designed round being a retrofit unit  (Tritons word not mine!)

The pipe work can be brought in from almost any position and there is a reasonable amount of space for cable entry from most positions.

Here is the link.

http://www.showerdoc.com/new-showers/triton/electric-showers/ZTRITO-SP8008ZUFIT-Triton-T80Z---8-5kW-(White-Chrome)

See Video at the foot of the page

There is also the Mira jump which is available iv various outputs.#

http://shower-warehouse.com/showers/mira/electric-showers/ZMIRA-1-1693-001-Mira-Jump-Electric-Shower-8-5KW