Suntrek Solar was the chosen sub-contractor for a big solar electric/pool thermal install at our home. I am very very please with how quickly our 20,000 gal pool heated up. We barely used the pool this summer (San Jose, Ca), due to the cold water temp. Additionally, the electrician "Ryan" did an outstanding job keeping in communication with me during the final stages of "start up" and teaching me how to program the timer/controller. They truly understand water flow rates and the necessary square foot of solar panels needed to operate very efficiently !!