Hitachi introduces R290 and R32 heat pumps
15th June 2025
SPAIN: Hitachi has launched new residential air-to-water heat pumps – an R290 monobloc and R32 split system.
Marketed under the AirH2O banner, the new ranges feature a modern and sleek looking outdoor unit with a full-black grille that hides the fan.
The AirH2O 800 R290 range is available in sizes from 4kW to 14kW as an 800M heating-only monobloc, or 800H or 800H Combi with 200l stainless steel domestic hot water tank and/or with back-up heater, hydraulic separator tank and integrated secondary pump.
The secondary pump and hydraulic separator guarantee an effective decoupling of primary and secondary water flows. Secondary water flow can be easily adjusted to fit most new or existing heating technologies – radiators, fan coils or underfloor heating – while the primary flow remains constant.
Heat output is said to be a constant 75°C at temperatures down to -5°C.
Hitachi has included a number of safety measures which they claim makes it the safest ATW heat pump on the market. In addition to the limited R290 refrigerant charge, the units include leakage sensors and alarms, spark-free components and an airtight eBox.
AirH2O 800 units are factory fitted with external pluggable connections for both power supply and connection. All functionalities have been transferred to the indoor unit’s controller
The AirH2O 600 comes in S and S Combi versions with 200l stainless steel tank included or optional external tank. Cooling is also available with the S Combi.
In sizes from 3kW to 14kW, the AirH2O 600 provides hot water up to 65ºC with constant heating down to -7ºC.
A number of features contribute to low noise levels with all these units. These include double thickness acoustic cabinet insulation and sound insulated compressor. Sound pressure is recorded at 27dB(A) at 5m, while, as an example, the 8.5kW AirH2O sound power level is 53dB(A).
Both series are wifi and NFC ready with a remote wall mountable controller. Configuration is said to be quick and easy thanks to NEC technology and Hitachi’s CSNET Home app on a smartphone.
