- Advanced design long life cast aluminum heat exchanger - All boilers ready for Floor standing or wall mount - Natural or L.P. gas - PVC/CPVC vent pip up to 100 ft, equivalent length - All connections on top - Easy access terminal strip for wiring - Quiet operation - Low NOx - friendly to the environment - Ideal for radiant, baseboard, DHW or mixed applications - 15 Year Limited Warranty with 5 year parts and labor warranty