At 10:49 this morning, E33, Sq33, and C133 responded to assist Co. 31 with a reported gas leak inside a commercial building on Old Willow Mill Rd. E33 crew assisted with the inside investigation. E237 used its main to get to the roof and check HVAC units. UGI was also on scene. Units cleared within 45 minutes. As we move into the winter heating season, please take the time and have your furnaces or HVAC units serviced to insure they are working according to manufacturers specifications. In this case, no leak was found but the building was evacuated upon arrival as a precaution.