The mechanism contained in a thermostatic shower mixer does not very much between the different makes and styles, however, there are many options when it comes to the controls, pipework connections and the material specifications. East London Plumbers can fit all types of mixer showers.Option 1.With this unit, the pipework is hidden in the wall. The unit has two rotary dial controls, want to set the temperature, the other to control the flow of water from off all the way through to the maximum flow rate. This is really a very good option when the wall is a hollow partition wall, or where it is made out of plasterboard. If you want to fit a use of this type on solid walls, you will have no choice but to channel the wall and make good plaster. An East London Plumber will make good any mess from an installation.Option 2.With this unit, just about everything is chrome plated including the feed pipes, the showerhead and the body of the mixer unit itself. This type of installation is suitable for solid or partition walls. Please note that the hot feed pipe will get very hot and should not be touched so perhaps this type should be avoided if you have young children or if the homeowner is an elderly person. The controls for this sort of units may also be either in the form of a rotary dial or an all in one joystick, the stick is lifted to turn the water on, and moved left and right to change the temperature. The chrome finish on the mixer unit will emphasise limescale and salt deposits so it will need regular cleaning to maintain the high shine finish.