Abstract: A method of adjusting pool or spa equipment parameters in a multi-vendor pool or spa equipment system is provided. The method includes providing a pool or spa equipment system including a plurality of different pool or spa equipment provided by a plurality of different pool or spa equipment suppliers with each of the plurality of different pool or spa equipment having its own adjustable parameters. The method includes connecting the plurality of different pool or spa equipment to a software application via a local network and receiving and displaying current parameter data of the connected plurality of different pool or spa equipment on the software application. The method further includes adjusting, via the software application, the parameters of any one of the connected plurality of different pool or spa equipment.