LG ELECTRONICS LG INVERTER HEAT PUMP WATER HEATER (IHPWH) Designed for eco-conscious homeowners, the LG Inverter Heat Pump Water Heater delivers hot water with an ENERGY STAR® certified efficiency of 3.75 UEF, a more efficient rating than conventional gas and electric resistance water heaters, and features LG's inverter compressor for quiet operation at 42 dB(A) and LG ThinQ® within LG's smart home ecosystem. BATH technology and Wi-Fi integration for remote control and management, including