At 9:15 Station 2 was alerted to a possible structure fire on Kingston Drive. Engine 2 with 3 (FF Valentin) responded. Chief 2 (B Sell) was on scene reporting smoke in the structure. Engine 2 laid in with 350 feet of 5 inch. Truck 1 took the front of the structure. crews found a furnace malfunction with CO being 180 PPM. The owner stated the roof was being replaced and there was plastic over the chimney. The snow had built up on the plastic. Crew removed the plastic and vented the structure. Tanker 2 with 2 (FF K Douillette) and Rescue 2 with 2 (FF B Douillette) also responded. D Air/Light 48, (Hershey), Engine 58(Annville), and Wagon 1 (Palmyra) also responded. Crews returned at 12:00 hours.