Vaillant aroTHERM plus (12 kW)

Specifications and technical data

Air Source (ASHP)ResidentialR29012 kW

Manufacturer	Vaillant
Model	aroTHERM plus
Model code	VWL 125/6 A S2
Heat pump type	Air Source (ASHP)
Application	Residential
Refrigerant	R290
Mode	Heating & cooling
Heating capacity	12 kW
COP (heating)	4.7 at A7/W35
Heating flow temperature	10–75 °C
Electrical supply	380-415V (Three Phase)
Cooling capacity	10.8 kW
EER (cooling)	3.5 at A35/W7
Dimensions (H×W×D)	1565 × 1100 × 490 mm
Sound power level	60 dB(A) (Sound Power LW(A))
Price (unit only)	£4899–£6877 (checked 2026-07-07)
Data added	22/06/2026
Data source	Manufacturer Data Sheet
MCS certification	✓ MCS listed — eligible for Boiler Upgrade Scheme (MCS-certified install required)
MCS certificate no.	KIWA 00044/002 HP
MCS listing	View on MCS ↗
Real-world performance data	View on HeatpumpMonitor.org ↗

Vaillant aroTHERM plus is a 12 kW air source heat pump, providing heating and cooling, using R290 refrigerant.

Where to buy (UK)

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

✓ Manually verified by Heat Pump Database

✎ Suggest a correction to this data

Data is compiled from manufacturer sources and may contain errors or gaps. Always confirm specifications with the manufacturer before making decisions.