I conducted a thorough evaluation of the air conditioning system during a maintenance visit. I assessed the condition of the furnace filter and evaporator coil, recorded the blower amp draw, inspected the cleanliness of the condenser coil, examined the electrical components of the condenser, and confirmed that the refrigerant pressures were within the correct range. I found that the ac was low on refrigerant, with high superheat and low suction pressure. The customer decided to wait and discuss the issue with his wife before making a decision.