UV LED retrofit

[Well Doner]

I had a 12 gmp whole house Ultraviolet UV water sterilizer installed when we remodeled our house. The thing really heats up the water during the night and the cold water is very hot in the morning. Does anyone know of LED retrofits for an existing system? I've not been successful in finding anything, plus I don't know enough about UV sterilizers to know if I need UVA, UVB or UVC. (I'm handy enough to design my own retrofit if I can find the appropriate LED strips.)