A:Answer Hi Linda,
We appreciate your question about the BTU of this Samsung range model. The BTUs are Right Front (RF) 18,000 BTU (*NX58H9950W* 19,000 BTU), Right Rear (RR) 5,000 BTU, Center (C) 9,500 BTU, Left Front (LF) 15,000 BTU and, Left Rear (LR) 9,500 BTU.
Thank you for choosing Samsung. Have a great day.
-Trisha-