Riello Domus M 004

Specifications and technical data

Air Source (ASHP)ResidentialR322.34–4.25 kW

Manufacturer	Riello
Model	Domus M 004
Model code	Domus M 004
Heat pump type	Air Source (ASHP)
Application	Residential
Refrigerant	R32
Mode	Heating & cooling
Heating capacity	2.34–4.25 kW
COP (heating)	5.2 at A7/W35
SCOP (heating)	4.85 at W35
Heating flow temperature	up to 60 °C
Power input	2.2 kW
Electrical supply	230V/1P/50Hz
Cooling capacity	4.7 kW
Cooling flow temperature	7–18 °C
EER (cooling)	3.45 at A35/W7
SEER (cooling)	4.99 at A35/W7
Operational Weight	58 kg
Sound power level	56 dB(A) (Sound Power LW(A) outdoor unit)
Data added	2026-07-06
Data source	Manufacturer Data Sheet
MCS certification	✓ MCS listed — eligible for Boiler Upgrade Scheme (MCS-certified install required)

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Notes

Riello Domus M 004 is a 4.25 kW split air source heat pump, providing heating, cooling and domestic hot water, using R32 refrigerant.

Riello Domus M split floor-standing heat pump system, R32, includes indoor unit with integral stainless steel DHW cylinder, Twin Rotary DC inverter compressor. DHW cylinder 190L (stainless steel). Outdoor unit net weight 58 kg; indoor unit weight separate. Indoor sound power 38 dB(A). Cooling nominal capacity 4.5 kW / EER 5.55 at A35/W18. Minimum partialisation 55% of nominal; cap_min estimated from this.

✓ Verified via Heat Pump KEYMARK data

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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.