Spiral heat exchanger from A. O. Smith
A. O. Smith’s GDHE-75 Vertex Power Direct Vent gas water heater is 96% efficient. Featuring a 75-gal., tank and a 100,000 Btu/hr. gas burner, it delivers a recovery rate of 129 gal. per hr. The spiral heat exchanger keeps hot combustion gases in the tank longer to lengthen the heat transfer cycle. It’s positioned in the center of the tank for more even heat distribution. It carries a 6-year limited warranty and meets Ultra-Low NOx emission requirements. The Vertex family is available in various sizes.
A. O. Smith. www.hotwater.com