Alex Nah showed up as scheduled, right on time. He explained the program thouroughly and proceeded to check all our equipment. He was very professional and knowledgeable. He changed the filter on our unit and charged the refrigerant. Before he left he went over all instructions of operation. He even vacuumed up any mess and left the work area in pristine condition. His work was very commendable and left my wife and myself extremely satisfied! Good luck and thank you Alex, we feel you will have a great future with your company! Thank you.