The Department was dispatched to assist CO36 (Kulptown) in the 1300 block of Chestnut St., Union Twp. for a reported chimney fire.  7-11 (S. Kulp) went on location with nothing showing.  Engine 7 and Tower 7 arrived moments later and investigated the building.  Crews found a moderately clogged chimney flu, which was quickly dismantled and removed from the residence.  Tower 7 set-up and investigated the top half of the chimney, which was discovered to be free of debris.  Crews ventilated the structure with fans and were back in service within the hour.  CO36 (Kulptown) and CO24 (Geigertown) assisted with the incident.