Daikin Altherma

Daikin Altherma domestic hot water heat pump ECH₂O

Use renewable energy to efficiently provide your home with hot water.

Daikin Altherma domestic hot water heat pump installation

Easy installation

Compact and designed with accessible controls, our hot water heat pump is easy to install and maintain.

Daikin Altherma Domestic hot water heat pump energy efficieny

Energy efficiency

Our domestic hot water heat pump extracts renewable energy from the outside air. Continue to increase your energy savings by connecting your unit to solar panels and achieving an energy efficiency of A+++.

Fresh hot water

Fresh hot water

With the unique design of the ECH2O thermal store, there is no risk of bacteria or need to disinfect the tank.

Increase energy efficiency and savings

Our ECH2O domestic hot water heat pump is the ideal combination of Daikin’s signature heat pump technology and a high performance water storage tank to achieve 3 times less electricity than traditional water heaters. Users can also connect their solar energy to achieve the highest levels of energy efficiency and substantial savings.

Maximum efficiency

The hot water storage tank is designed to maximise the efficiency of hot water production:

  • Multiple layers of polyurethane foam fully insulate the water heater
  • Stainless steel heat exchanger, with a capacity of 29 litres, runs the entire length of the tank.
  • Provides hot water at all levels.

Energy savings

By combining a heat pump and a hot water storage tank, you achieve optimal savings:

  • Reduce the electricity required to produce domestic hot water by up to 70%, (compared to a traditional hot water heater).
  • Nearly instantaneous production of hot water, without additional electric power for the water disinfection cycle.

Hot water savings with solar energy

Reduce your energy costs by taking advantage of the sun's renewable energy. Our solar panels are easy to install and produce up to 70% of the energy your hot water heat pump needs. Equally available for all building types, our solar hot water systems accommodate small and large homes. Choose between a pressureless or pressurised hot water system.


Pressureless ECH2O thermal store

  • Ideal for new homes
  • Higher energy performance than pressurised systems
  • Requires a direct vertical connection from the tank to the solar collectors
  • If there is no sun, the system automatically drains to prevent frozen pipes

Pressurized ECH2O thermal store

  • Ideal for renovations and existing homes
  • Possibility to use curved piping to connect the tank to the solar collectors
  • Filled with water and antifreeze to prevent frozen pipes
  • The system is pressurised and sealed for your safety