We are very pleased with the solar heating system installed by Eco Solar. Doug provided a complete estimate of the work involved and costs and the job was done in time to enjoy swimming all summer well into September (I can't remember the last time we used the pool after Labor Day!). Doug and his associates were courteous and helpful. Doug even gave us some information about ways we can make further updates to our pool system in the future to save both money and energy. We are looking forward to many more warmer and longer swimming seasons.