LG THERMA V (4 kW)

Specifications and technical data

Air Source (ASHP)ResidentialR324 kW

Manufacturer	LG
Model	THERMA V
Model code	HU041MR.U20
Heat pump type	Air Source (ASHP) All Air Source heat pumps →
Application	Residential All Residential heat pumps →
Refrigerant	R32 All R32 heat pumps →
Mode	Heating & cooling
Heating capacity	4 kW
Max heating output (low temp)	4 kW at A-7/W35
COP (heating)	5.1 at A7/W35
SCOP (heating)	4.65 at W35
Operating range (air)	-20 to 35 °C
Heating flow temperature	15–55 °C
Electrical supply	220-240V (Single Phase)
Cooling capacity	4 kW
Max cooling output (high temp)	4 kW at A35/W7
Cooling flow temperature	5–27 °C
EER (cooling)	3.4 at A35/W7
Dimensions (H×W×D)	650 × 870 × 330 mm
Operational Weight	44.7 kg
Sound power level	57 dB(A) (Sound Power LW(A))
Data added	2026-09-14
Data source	Manufacturer specification page (LG HVAC Partner Community)
Verification	Verified by a human

Free data sheet (PDF) →

Check noise at a neighbour’s window (MCS 020 a) →

View manufacturer page →

LG THERMA V HU041MR.U20: 4 kW, R32, single-phase supply. LG THERMA V split-system outdoor unit. Pairs with a separate indoor hydrobox or cylinder unit, which is where the rated output and efficiency are declared.

Where to buy (UK)

UK Supplier	The Heat Pump Warehouse
UK Supplier	CoolEasy

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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.