A. O. Smith introduces the world's smallest heat pump water heater with the HPW Series. This Hybrid Wall Hung Electric Water Heater is the most advanced water heater of its class, featuring a patented heat pump module that delivers hot water at a much-reduced energy cost.

Its compact wall-hung design fits perfectly in high-end condominiums where space is premium and energy efficiency is prized. Its beautiful exterior and user-friendly LED HD touch display match the elegance and luxury of your bathroom.


How It Works

The A. O. Smith Air2Heat water heater moves some of the heat from outside to provide hot water inside. To move the heat, the A. O. Smith Air2Heat water heater works like a refrigerator in reverse.

While a refrigerator pulls heat from inside the refrigerator and transfers it into the surrounding room, the A. O. Smith Air2Heat water heater pulls heat from the surrounding air and transfers it into a tank to heat water.




Why Choose Our Product



  • Efficient Renewable Energy Technology

    This water heater is a highly efficient, energy-saving and environment-friendly device. While running in energy-saving mode, users can save up to 60% on electricity costs when compared to a conventional electric water heater.

  • AES (Adaptive Energy Saving system) function

    This water heater has a unique AES feature which adopts the heating cycles to the water utilization habit of the user. This enables the water heater to switch on automatically at the required time, saving energy by minimizing thermal losses.

  • Blue Diamond Glass Lined Tank

    This water heater comes with a special glass-lined tank. This lining offers the protection against tank corrosion and increases the life of the water heater and it is achieved through a specialized fusion process.

    The tanks are designed to pass 100,000 cycle fatigue test. This makes it one of the best tanks resistant to rust and scaling.

  • Glass Lined Heat Exchanger

    The glass lining of the heat exchanger offers protection against corrosion and increases the life of the water heater. The lining is stronger and more corrosion-resistant than any other in the industry.

  • Glass-lined Electric Heating Element

    This water heater is incorporated with a 3kW heating element which helps in quick heating. If the temperature is set above 50°C then the heating element is activated. Users also have an option of heating the water completely in 3kW mode.

  • Digital Display

    This water heater has a built-in digital display for readings and key parameters for ease of operations. The user-definable functions and parameters are setting of Mode, Timers, Override, AES [Adaptive Energy Saving System], Temperature Setting, Hot Water Display Quantity and Power-off Memory Function.

    The diagnostics of the units malfunctions can be shown by the LED display.

  • Instant

    Users can select electric heating by pressing the override key and the water heater starts electrical heating immediately to reach the pre-set temperature.

  • Wireless Remote Control

    Comes with a remote control for easy access user experience

  • Display of Hot Water Amount

    This water heater has a function of displaying amount of hot water available.

  • User Settings

    This water heater can be set by the user to operate in different energy modes: The high-efficiency mode uses only environmental heat to heat the water up to 50°C. The hybrid mode uses the heating element only if the set temperature is > 50°C.

  • Programmable Timer

    This water heater timer enables the unit to switch on automatically at pre-set times of the day, in energy saving mode.

  • Power-off Memory Function

    This water heater can retain the set information for 48 hours, even in power off condition.

  • High Temperature Limit Protection Switch

    This water heater employs a high-temperature limit protection switch. In case any fault occurs and the water temperature exceeds the highest preset temperature, the switch rapidly cuts off the phase and neutral line simultaneously to guarantee safety.

  • Safety Valve

    A safety valve for the water heater is provided and set while leaving the factory and it is not adjustable by the user. The safety valve must be installed at the inlet pipe of the water heater.

    This valve will relieve pressure automatically while the piping system exceeds the rated pressure. The discharge port of the safety valve and the condensate pipe should be connected to the floor drain through the three-pass discharge pipe.

  • Pro-Safety Electric Leakage Protection

    Built-in Tri-polar ELCB detects any fault in ground wire circuit and cuts off all connections between the water heater and the electric supply instantaneously 




Rated volume (L) / (Gal)80 / 20
Rated voltage (V)/Rated frequency (Hz)220V 60Hz
Rated input power (W)/Rated current (A) 
Energy-saving mode250/1.25
Electrical mode heating3000/13.7
Efficiency Power Input0.21kW
Efficiency Heating Capacity0.54kW
Backup Electric Power Input3kW
Inner tank rated pressure (MPa)0.8
Range of water temperature (°C)35-75
Environment application range of energy-saving mode (°C)10-43
Refrigerant charge volume (g)123
Noise level (dB(A))40
Net Weight (kg)45
User Manual and Leaflets
Attachment Size
HPW-80 User Manual.pdf 527.69 KB