LG THERMA V R32 Monobloc S II (14 kW)

Specifications and technical data

Also known as: HM141MRS UB40, HM141MRS

✓ BUS eligibleAir Source (ASHP)ResidentialR3214 kW

Manufacturer	LG
Model	THERMA V R32 Monobloc S II
Model code	HM141MRS.UB40
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	14 kW
Max heating output (low temp)	12 kW at A2/W35
COP (heating)	4.8 at A7/W35
SCOP (heating)	4.62 at W35
Operating range (air)	-25 to 35 °C
Heating flow temperature	15–65 °C
Electrical supply	220-240V (Single Phase)
Cooling capacity	14 kW
Max cooling output (high temp)	14 kW at A35/W7
Cooling flow temperature	5–27 °C
EER (cooling)	3.1 at A35/W7
Dimensions (H×W×D)	1019 × 1320 × 520 mm
Operational Weight	117 kg
Sound power level	61 dB(A) (Sound Power LW(A))
Data added	2026-09-24
Data source	Manufacturer specification page (LG UK)
Verification	Verified by a human
Boiler Upgrade Scheme	✓ BUS eligible — Listed on the Ofgem BUS Product Eligibility List (24 Sep 2026). Grant also needs an MCS-certified installer and a qualifying system design. Funding guide
PEL certificate no.	011-1W0962_3
MCS certification	✓ MCS listed
MCS certificate no.	011-1W0962_3

Free data sheet (PDF) →

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

View manufacturer page →

LG THERMA V R32 Monobloc S II HM141MRS.UB40, 14 kW air-to-water monobloc heat pump with all hydronic components in the outdoor unit. 14.0 kW at A7/W35 with a COP of 4.8, SCOP 4.62 at W35 (A+++) and 3.46 at W55 (A++). Reversible, 14.0 kW cooling at A35/W7. Flow to 65 C, operates down to -25 C. Sound power 61 dB(A). Single-phase.

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.