LG THERMA V Hydrosplit (HM091HF.UB40)

Specifications and technical data

Air Source (ASHP)ResidentialR2909 kW

Manufacturer	LG
Model	THERMA V Hydrosplit
Model code	HM091HF.UB40
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	9 kW
Max heating output (low temp)	5.5 kW at A7/W55
COP (heating)	4.7 at A7/W35
SCOP (heating)	5.2 at W35
Operating range (air)	from -25 °C
Heating flow temperature	15–75 °C
Electrical supply	220-240V (Single Phase)
Cooling capacity	5.5 kW
Max cooling output (high temp)	5.5 kW at A35/W7
Cooling flow temperature	5–27 °C
EER (cooling)	2.6 at A35/W7
SEER (cooling)	5.2 at W35
Dimensions (H×W×D)	1019 × 1320 × 520 mm
Operational Weight	130 kg
Sound power level	50 dB(A) (Sound Power LW(A))
Price (unit only)	~£4,219.92 (checked 2026-09-30)
Data added	2026-09-14
Data source	Manufacturer specification page (LG HVAC Partner Community)
Verification	Verified by a human
MCS certification	✓ MCS listed
MCS certificate no.	011-1W0831

Free data sheet (PDF) →

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

View manufacturer page →

LG THERMA V Hydrosplit outdoor unit, 9 kW class, R290 refrigerant with a 0.9 kg factory charge. The refrigerant circuit is sealed inside the outdoor unit and only water is piped indoors, so no refrigerant handling is needed on site. Reversible - heating and cooling. Seasonal efficiency class A+++ at both W35 and W55. Single-phase supply, maximum current 17.0 A.

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.