LG Therma V R290 Monobloc 12kW (HM121HF.UB60)

Specifications and technical data

✓ BUS eligibleAir Source (ASHP)ResidentialR29012 kW

Manufacturer	LG
Model	Therma V R290 Monobloc 12kW
Model code	HM121HF.UB60
Heat pump type	Air Source (ASHP) All Air Source heat pumps →
Application	Residential All Residential heat pumps →
Refrigerant	R290 All R290 heat pumps →
Mode	Heating & cooling
Heating capacity	12 kW
Max heating output (low temp)	11 kW at A2/W35
COP (heating)	4.7 at A7/W35
SCOP (heating)	5.45 at W35
Operating range (air)	-28 to 35 °C
Heating flow temperature	15–75 °C
Power input	2.55 kW
Electrical supply	220-240V (Single Phase)
Cooling capacity	11.5 kW
Max cooling output (high temp)	11.5 kW at A35/W7
EER (cooling)	3.12 at A35/W7
Dimensions (H×W×D)	1019 × 1560 × 520 mm
Operational Weight	181 kg
Sound power level	49 dB(A) (Sound Power LW(A))
Price (unit only)	£3,620–£3,808 (checked 2026-07-10)
Data added	2026-06-27
Data source	Manufacturer Data Sheet
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.	011-1W0689_36
MCS certification	✓ MCS listed
MCS certificate no.	011-1W0689_36
MCS listing	View on MCS ↗

Free data sheet (PDF) →

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

View manufacturer page →

LG Therma V R290 Monobloc 12kW is a 12 kW air source heat pump, providing heating and cooling, using R290 refrigerant (model HM121HF.UB60).

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.