Castle is the oldest stove manufacturer in the USA, beginning in 1846. Castle offers more top configurations than any other range manufacturer. On open top burners we use an energy efficient 24,000 BTU rated star burner that spreads heat evenly to small or large pots. This energy efficient pattern allows a lower BTU burner to produce the same cooking results as a higher BTU rated ring or octagon pattern burner reducing energy consumption without sacrificing performance.