Summertime Air Conditioning Repair Near Preston. Sent out on a call to repair a non-functional air conditioning system at a residential home. The customer noticed the system was failing to produce cool air in the home. Inspected the system to locate the source of the problem. Found loose wiring on the system causing the error. Reconnected the wires on the unit to resolve the problem and bring cool air back into the home. The customer was happy on departure.