$2,898.12
By Raypak
Part # 017990F
Raypak ASME Cupronickel Heat Exchanger Kit for Model 407A Low NOx Heaters - 017990F
Units manufactured from 12/2019 have bronze headers and use this 017990F heat exchanger. Note that the copper ones and the cupronickel ones are not inter4changeable. Units manufactured prior to 12/2019 use cast iron headers and use 010363F for the heat exchanger.