Heat PumpDatabase

Hitachi airH2O 400 8kW

Specifications and technical data

Air Source (ASHP)ResidentialR322.1–8 kW
ManufacturerHitachi
ModelairH2O 400 8kW
Model codeHZKF08KSE-Q
Heat pump typeAir Source (ASHP)
ApplicationResidential
RefrigerantR32
ModeHeating & cooling
Heating capacity2.1–8 kW
COP4.9 at A7/W35
EER (cooling)3.6
Operating range (air)-25 to 35 °C
Flow temperature15–60 °C
Weight48.5 kg
Sound power level64 dB(A) (Sound power, normal mode)
Data added2026-06-11
Data sourceHitachi brochure / product data

Notes

airH2O 400 air-to-water heat pump using R32 refrigerant for heating, cooling and domestic hot water applications.

Flow 15-60°C, ambient -25 to 35°C heating; R32 charge not fully clear in OCR. Cooling EER at A35/W7. Sound power shown as normal mode heating/cooling paired values in source; heating value used.

Where to buy (UK)

UK SupplierThe Heat Pump Warehouse
UK SupplierSecon Renewables

○ Awaiting verification

✎ Suggest a correction to this data

Data is compiled from manufacturer sources and may contain errors or gaps. Always confirm specifications with the manufacturer before making decisions.

More from Hitachi

Other Air Source (ASHP) heat pumps

Compare with other products

Open the interactive database →