The technicians were very knowledgeable. They are expertise in their field. They did not show any sign of back and forth actions , as if the work is very simple to them. The supervisor came before the start of the installation and made measurements that were very precise and accurate which made the installation more simple and easy. The supervisor came again at the end of the job to further do finishing touches and getting rid of things that are hazardous. He beautified the whole system by adding some aluminum seal on visible joints. The whole work amazed me. What a relieve Edison Heat and cooling gave me. Thank you.