RFC was dispatched to assist the Berwyn Fire Company on a commercial building fire on Devon Park Drive at 9:49 AM.
Radnor units were clearing a call for an elevator rescue when the assist call was dispatched.
Chief 15, Deputy 15, Engine 15, Squad 15 and Tac 15 all responded.
Once on location, crews assisted in establishing the water supply for the hose line in the building.
Radnor was one of several other fire companies called to the scene, which included Paoli, Valley Forge and Upper Merion Fire Departments.
Crews cleared the scene within an hour.