Sean was very knowledgeable and professional . He was able to quickly diagnose and rectify our situation . Sean determined that there was a leak in the coil and all of the refrigerant leaked out. After we assessed the situation and looked at the costs for running the existing air-conditioning system; we decided to go forward with replacing the system with one that is more efficient. Sean waived the cost of the service for today which would happen over $419 for the Freon and for the leak test. Our old AC system was very expensive to run. The new system should help to pay for itself in about two years .