6-year limited tank warranty, 6-year parts warranty for residential applications
Energy star qualified
Helical Internal Heat Exchanger - Spiral heat exchanger keeps hot combustion gases in the tank longer lengthening the heat transfer cycle
Power vent design uses inexpensive PVC, CPVC, ABS or polypropylene pipe for intake and exhaust and can be vented vertically thru-the-roof or horizontally thru-the-wall