Rinnai® Tankless Water Heater, Series: RXP Series, 199000 Btu/hr, 98 W, 11 gpm Flow Rate, 0.96 Energy Factor, 1.3 W Standby Loss, 98 % Efficiency, 3 x 5 in Vent, Direct, Non-Direct Vent, 4 A, 120 V, 60 Hz, NPT Connection, 150 psi, Yes Energy Star Compliant, Wall Mounting, Liquid Propane Gas, Natural Gas Fuel, Direct Electronic Ignition System, 98 to 140 deg F, 30.11 in H x 18.5 in W x 11.41 in D, 10200 ft Altitude, Additional Information: Wi-Fi Capable, Ultra Low-Nox, Convertible Installation, 49 dB Sound Level