I am new to the forum and looking for advice. I have a proposal to install a Heliocol solar heater, and the contractor is recommending an automatic heater controller. I live in Clearwater, Florida so I would think that it would be a simple task to get to the desired warmth and then off the solar heater in early Summer, then back on when cooler evenings return. The salesman said that our summer rains can actually cause the solar panels to cool the pool more than the added rain. What is the general opinion on this?