Eccotemp 40HI-NG Whole House Tankless Gas Water Heater Indoor (Natural Gas) 135,000 BTU. 110V. 6.3 GPM. & BREO Skin Watch This is a bundle of (1) Eccotemp 40HI-NG Indoor Gas Tankless Water Heater, 135,000 British Thermal Unit and (1) Breo Skin Watch (Random Color) 6.3 GPM, 110 volt power supply Flow rate of 6.0 GPM at 35 degree rise, 4.57 GPM at 45 degree rise, 2.6 GPM at a 7 degree rise Built-in antifreeze circuit 135,000 BTU's. Digital display with simple controls and diagnostics