I am not sure where to begin with the satisfaction we have received from efficient energy solutions! We first contacted them to replace a furnace and duct work on a house we were renovating in Fall of 2016. They were extremely thorough, provided fair pricing, and were a breeze to work with. After the work was completed, we encountered a problem with a piece of piping , not part of the scope of work for efficient energy solutions, but when we called, they came that very same day and replaced it free of charge! We were so impressed that we have since used them for 3 additional furnaces, each time more satisfied than the last!