We have been doing business with George Cunningham Company Inc. (GCCI) for about 25 years and have bought two high efficiency systems from them over that time. Additionally, we hired GCCI to replace the ductwork in our home with increased wall thickness ducting. We have also signed up for their preventative maintenance program which has extended the lives and efficiency of our systems significantly. Their work is done as promised and on time. They have done all work properly, have been efficient and are neat. They are not low cost competitors, but we still have no hesitation in recommending to most of our friends. This company has integrity. Give them a try.