Vaillant flexoTHERM exclusive (12.9 kW)

Specifications and technical data

✓ BUS eligibleWater Source (WSHP)ResidentialR410A12.9 kW

Manufacturer	Vaillant
Model	flexoTHERM exclusive
Model code	VWF 117/4 230v VWW 11/4 SI
Heat pump type	Water Source (WSHP) All Water Source heat pumps →
Application	Residential All Residential heat pumps →
Refrigerant	R410A All R410A heat pumps →
Mode	Heating only
Heating capacity	12.9 kW
Max heating output (low temp)	12.9 kW at W10/W35
COP (heating)	5.1 at W10/W35
SCOP (heating)	4.97 at W35
Heating flow temperature	up to 65 °C
Electrical supply	220-240V (Single Phase)
Dimensions (H×W×D)	1183 × 595 × 600 mm
Operational Weight	178 kg
Sound power level	50 dB(A) (Sound Power LW(A))
Price (unit only)	£6,790.43–£7,864.80 (checked 2026-09-30)
Data added	2026-09-14
Data source	Manufacturer technical specification (Vaillant UK)
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 00023/023 HP
MCS certification	✓ MCS listed
MCS certificate no.	KIWA 00023/023 HP

Free data sheet (PDF) →

View manufacturer page →

Vaillant flexoTHERM exclusive 11 kW, 230 V single-phase, with a fluoCOLLECT water module (VWW 11/4 SI) drawing heat from groundwater. R410A refrigerant. Flow temperature up to 65 °C.

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.