The Singer Building took water from the New York City water supply system, where it was filtered through ammonia coils and then through two filters into two suction tanks. Inside the Singer Building, there were seven water tanks to serve a projected demand of each hour. Three tanks on the Singer Tower's 29th, 39th, and 42nd floors had a combined capacity of , and served various portions of the tower. To provide water to the base, there was one tank of in the Bourne Building and three tanks of a combined in the original Singer Building. This allowed all the offices in the tower portion to be provided with cold, hot, and ice water. Two heaters in the basement provided heated water to the entire building. There was also a refrigeration plant with two pumps and a small freezing system capable of producing of ice daily.