The GL-235 can be used to control any solar pool heating system. The GL-235 can be purchased online through PayPal. This is for only those who need to purchase a solar controller independent of the SolarAttic pool heater either as a replacement control or a control for use on another solar system. Do not purchase the GL-235 below if you want to purchase a SolarAttic PCS2 or PCS3 solar pool heater. The pool heater may only be available through a SolarAttic dealer who may use his own solar control technology. If you want information on the SolarAttic PCS2/PCS3 solar pool heater, fill out this form.