LG Therma V R32 Monobloc S 12kW (HM123MR.U34)

Specifications and technical data

Air Source (ASHP)ResidentialR3212 kW

Manufacturer	LG
Model	Therma V R32 Monobloc S 12kW
Model code	HM123MR.U34
Heat pump type	Air Source (ASHP)
Application	Residential
Refrigerant	R32
Mode	Heating & cooling
Heating capacity	12 kW
Max heating output (low temp)	11 kW at A2/W35
COP (heating)	4.9 at A7/W35
SCOP (heating)	4.67 at W35
Operating range (air)	-25 to 35 °C
Heating flow temperature	15–65 °C
Power input	2.4 kW
Electrical supply	380-415V (Three Phase)
Cooling capacity	12 kW
Max cooling output (high temp)	12 kW at A35/W7
EER (cooling)	3.2 at A35/W7
Dimensions (H×W×D)	1380 × 1239 × 330 mm
Operational Weight	119.1 kg
Sound power level	60 dB(A) (Sound Power LW(A))
Price (unit only)	£3341.52–£3889 (checked 2026-07-15)
Data added	2026-06-27
Data source	Manufacturer Data Sheet
MCS certification	✓ MCS listed — eligible for Boiler Upgrade Scheme (MCS-certified install required)
MCS certificate no.	KIWA 00033/062 HP
MCS listing	View on MCS ↗

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LG Therma V R32 Monobloc S 12kW is a 12 kW air source heat pump, providing heating and cooling, using R32 refrigerant (model HM123MR.U34).

Where to buy (UK)

UK Supplier	The Heat Pump Warehouse
UK Supplier	CoolEasy

✓ Manually verified by Heat Pump Database

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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.