In the early morning hours engine and truck 25 responded to Mt. Penn (company 1) borough for a house fire. PD arrived on scene first and gave the report of heavy fire showing from the rear of the house. Engine 25 arrived as the 3rd due engine company while the tower operated as the 2nd due truck on the working fire dispatch. Crews from both pieces went to the 2nd and 3rd floor of the duplex and assisted with suppression and opening up the fire room with the first in company’s. Crews from Exeter fire were on scene for a little over 3 hours before returning to service.