19 million homes in the UK have outdated controls which do not control heat as effectively as modern controls. In most cases, these will be fully wired products.
The heating installer, with the aid of a compatibility chart, can see quickly whether the existing control can be replaced by a modern alternative. By removing the front of the control a new device can be attached to the existing wiring and backplate.
This process does not interfere with the wiring behind the scenes, and as such, can be undertaken by an installer WITHOUT the need to conform to Part P of The Building Regulations.