NTI FTVN199C-S2 Series II combi boiler, 199 MBH input (CH & DHW), NG, 95% AFUE, 10:1 turndown, 10.5 GPM DHW @ 35°F rise, built-in ECM pump, NTI Net WiFi, 2"/3" PVC/CPVC/PP vent, 5-yr parts / limited lifetime HX warranty | Water Heaters Only