Vaillant aroTHERM (VWL /2) (9.8 kW)

Specifications and technical data

Also known as: aroTHERM VWL 115/2 A 230V

✓ BUS eligibleAir Source (ASHP)ResidentialR410A9.8 kW

Manufacturer	Vaillant
Model	aroTHERM (VWL /2)
Model code	VWL 115/2 A 230V
Heat pump type	Air Source (ASHP) All Air Source heat pumps →
Application	Residential All Residential heat pumps →
Refrigerant	R410A All R410A heat pumps →
Mode	Heating only
Heating capacity	9.8 kW
Max heating output (low temp)	7.63 kW at A-7/W35
COP (heating)	3.85 at A7/W35
Operating range (air)	-20 to 28 °C
Heating flow temperature	up to 63 °C
Electrical supply	220-240V (Single Phase)
Dimensions (H×W×D)	975 × 1103 × 463 mm
Operational Weight	126 kg
Sound power level	65 dB(A) (Sound Power LW(A))
Data added	2026-09-26
Data source	Manufacturer documentation (Vaillant)
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.	KIWA 00016/011 HP
MCS certification	✓ MCS listed
MCS certificate no.	KIWA 00016/011 HP

Free data sheet (PDF) →

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

Vaillant aroTHERM VWL 115/2 A 230V, first-generation air-to-water monobloc heat pump, R410A. 9.8 kW at A7/W35 with a COP of 3.85 (full output). Flow to 63 C, operates down to -20 C. Sound power 65 dB(A). Single-phase.

Where to buy (UK)

UK Supplier	The Heat Pump Warehouse
UK Supplier	Secon Renewables
UK Supplier	City Plumbing
UK Supplier	Pirate Heating Supplies
UK Supplier	Eco Wizard

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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.