Alpha Innotec LWDV

Specifications and technical data

Also known as: LWDV 91-1/3-HDV 9-1/3, LWDV 91-1/3-HDV 12-3, LWDV 91-1/3-HSDV 9M1/3, LWDV 91-1/3-HSDV 12M3, LWDV-91-1/3-HSDV 12M, LWDV-91-1/3-HSDV9 M1/3, LWDV 91-1/3-HDV9-1/3, LWDV 91-1/3-HDV 12-3

✓ BUS eligibleAir Source (ASHP)ResidentialR2902.74–8.2 kW

Manufacturer	Alpha Innotec
Model	LWDV
Model code	LWDV 91-1/3
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 only
Heating capacity	2.74–8.2 kW
Max heating output (low temp)	8.11 kW at A-7/W35
COP (heating)	5.41 at A7/W35
Operating range (air)	-22 to 35 °C
Heating flow temperature	20–70 °C
Electrical supply	220-240V (Single Phase)
Dimensions (H×W×D)	1320 × 930 × 510 mm
Operational Weight	141 kg
Sound power level	59 dB(A) (Sound Power LW(A))
Data added	2026-09-21
Data source	Manufacturer documentation (Alpha Innotec)
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.	041-K001-24 a

Free data sheet (PDF) →

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

Alpha Innotec LWDV 91-1/3 air-to-water monobloc for outdoor installation, fully modulating, natural R290 refrigerant, paired with an HDV hydraulic module or HSDV hydraulic station indoors. Declared 2.77 kW at A7/W35 at part load with a COP of 5.41 to EN 14511, modulating from 2.74 to 8.20 kW at that point, and 8.11 kW at A-7/W35 at full load. Heating flow up to 70 °C, air from -22 to 35 °C. Available single- or three-phase.

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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.