I don't have a spa or lights or any valves that need to be controlled. I have been burned by technology and want to keep things simple. When I built my pool I installed an ozinator and an Ionizer. Both lasted about 2 seasons and then there was no support when they started having problems. Also, as I said in the beginning I am replacing my heater. The old heater's "mechanics" are fine, it is the circuit board that is flaking out. In that vain, should I even pass on the SWG. I'm worried it will work for about 2-seasons and then I will be stuck with some unknown computer chip problem.