Toshiba ESTIA BiBloc Hydrobox (2.1–4.1 kW)

Specifications and technical data

Air Source (ASHP)ResidentialR2902.1–4.1 kW

Manufacturer	Toshiba
Model	ESTIA BiBloc Hydrobox
Model code	HWP-401HW-E Hydrobox
Heat pump type	Air Source (ASHP)
Application	Residential
Refrigerant	R290
Mode	Heating & cooling
Heating capacity	2.1–4.1 kW
Max heating output (low temp)	2.5 kW at A2/W35
COP (heating)	5 at A7/W35
SCOP (heating)	4.5 at W35
Operating range (air)	-20 to 45 °C
Heating flow temperature	up to 70 °C
Electrical supply	220-240V (Single Phase)
Cooling capacity	2.6 kW
Max cooling output (high temp)	2.6 kW at A35/W7
EER (cooling)	2.9 at A35/W7
Dimensions (H×W×D)	850 × 998 × 500 mm
Operational Weight	162 kg
Sound power level	56 dB(A) (Sound Power LW(A))
Data added	2026-07-02
Data source	Manufacturer Data Sheet

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Toshiba ESTIA BiBloc Hydrobox is a 4.1 kW air source heat pump, providing heating and cooling, using R290 refrigerant.

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

Reviews & further reading

Review Toshiba Estia Review - Japanese Heat Pump for UK Homes — HeatPumpCompared
Covers the Toshiba Estia range generally, not this specific variant only.