We installed a solar water system by this company in July 2010. It cost $6000+, roof mounted system. Was sold as a low maintenance system that we shouldn't have to do anything to but check the ph once every 8 years. Well less than 3 years later î it seemed like the system was draining water out the overflow all the time, we finally called them in 2014, and they came out to determine that the thermostat was bad. This was covered under warranty, however the labor was $500+. Now it is winter 2015 and we are getting very little hot water even tho the pipe is hot. Called a plumber who would not touch it. So back to calling them out, $150 just to come out for 30 min! Now the mixer valve is stuck and he is installing a one way valve to prevent the cold water from entering the hot water line. So why was this not done in the beginning??? My advise is steer clear of this company. I could have bought a new hot water heater every year for what I have spent!!!