Brine-to-Water Heat PumpflexoTHERM exclusive VWF 400V

Our premium heat pump.

Can be flexibly combined with our hot water cylinders
Durable quality and reliable operation for years to come
Convenient control via smartphone and myVaillant app
A+++ energy efficiency rating ensures reduced heating costs
Passive cooling for a comfortable room temperature on hot summer days

The flexoTHERM exclusive is an indoor brine-water heat pump, that is particularly sustainable thanks to its high quality and efficient operation. Convenient control via app is included thanks to the integrated Internet module. With output ratings from 5 to 19 kW, it is suitable for both single-family and multi-family homes. A wide range of efficient storage tanks is available for hot water preparation. This means that there is a suitable system for every requirement.

Ideal for:

Heating
Hot water
Cooling

Can be flexibly combined with our hot water cylindersThe right solution for every need.
Can be flexibly combined with our hot water cylinders
The flexoTHERM excluisve can be flexibly combined with various hot water cylinders from 100 - 500 litres. The system is designed to suit your needs. This means you can enjoy a full bath even if someone has already taken a shower or is washing up in the kitchen at the same time.
More than 150 years of experience in heatingQuality that keeps its promises.
More than 150 years of experience in heating
Vaillant products stand for carefully selected features and materials, rigorous testing beyond standard conditions, over 150 years of experience in heating technology, and outstanding service that lasts. Our heat pumps have undergone extensive testing in extreme environments – from freezing temperatures of -25°C to scorching heat of +48°C, and humidity levels reaching 100%. We offer a 10-year material warranty on our high-quality compressor. The result is a product that impresses today and will continue to do so tomorrow. And because true quality means long-term support, for example, we guarantee spare part availability for 15 years after end of production — ensuring peace of mind for years to come.
Tailored settings to goAlways in control with myVaillant App.
Tailored settings to go
With the included Internet gateway myVAILLANT connect, you can conveniently track the system’s energy consumption and precisely set desired temperatures and fixed operating hours with no effort via our app.
Energy efficientA+++ energy efficiency rating ensures reduced heating costs.
Energy efficient
Tap into nature’s steady warmth with our flexoTHERM exclusive ground-source heat pump. The ground stays at a constant temperature of around 10 °C all year round. With our advanced technology, the flexoTHERM exclusive transforms this natural resource into efficient heating, even during the chilliest winters. Its A+++ energy efficiency rating (A+++ to D) at 35 °C flow temperature means reduced heating costs and sustainable energy generation. You’re not just protecting the planet; you’re safeguarding your wallet while enjoying premium comfort every day.
Cool in summerPassive cooling to reduce the room temperature.
Cool in summer
To activate the cooling function, an additional module for passive cooling is required. After installation, the heat is extracted from the living spaces via the underfloor heating and released into the ground via the ground probe. This is an especially cost-efficient cooling method because the heat pump is switched off and only the pumps are running.

Technical data table overline

Technical data table headline

flexoTHERM exclusive
VWF 57/4 400 V	VWF 87/4 400 V	VWF 117/4 400 V	VWF 157/4 400 V	VWF 197/4 400 V

ErP

ErP Seasonal Space Heating Efficiency Low Temp Class	ErP Seasonal Space Heating Efficiency Low Temp Class
ErP Seasonal Space Heating Efficiency High Temp Class	ErP Seasonal Space Heating Efficiency High Temp Class
ErP Seasonal Space Heating Energy Efficiency Low Temp (average)	ErP Seasonal Space Heating Energy Efficiency Low Temp (average)	184 %	202 %	201 %	196 %	187 %
ErP Seasonal Space Heating Energy Efficiency Medium Temp (average)	ErP Seasonal Space Heating Energy Efficiency Medium Temp (average)	131 %	147 %	142 %	143 %	142 %

flexoTHERM exclusive
VWF 57/4 400 V	VWF 87/4 400 V	VWF 117/4 400 V	VWF 157/4 400 V	VWF 197/4 400 V

Electrical Connection

Electrical Power Consumption incl. Electrical Backup Heater (max)	Electrical Power Consumption incl. Electrical Backup Heater (max)	11,5 kW	12,8 kW	14,1 kW	15,6 kW	17,8 kW
Electrical Power Consumption for Back-Up Heater (max)	Electrical Power Consumption for Back-Up Heater (max)	9,0 kW	9,0 kW	9,0 kW	9,0 kW	9,0 kW
Electrical Voltage Supply, Control	Electrical Voltage Supply, Control	230 V (50 Hz)	230 V (50 Hz)	230 V (50 Hz)	230 V (50 Hz)	230 V (50 Hz)
Electrical Voltage Supply, Back-Up Heater	Electrical Voltage Supply, Back-Up Heater	400 V (50 Hz)	400 V (50 Hz)	400 V (50 Hz)	400 V (50 Hz)	400 V (50 Hz)
Fuse Type	Fuse Type	3x25 A	3x25 A	3x25 A	3x25 A	3x25 A

Operation Fluids

Content Heating Water	Content Heating Water	3,2 l	3,9 l	4,4 l	5,8 l	6,5 l
Content Heat Transfer Fluid	Content Heat Transfer Fluid	2,5 l	3,1 l	3,6 l	4,5 l	5,3 l

Hydraulics

Pump Volume Flow (min)	Pump Volume Flow (min)	660 l/h	1.020 l/h	1.350 l/h	1.720 l/h	2.300 l/h
Pump Volume Flow / Remaining pressure head at ΔT=8 K (max)	Pump Volume Flow / Remaining pressure head at ΔT=8 K (max)	1.070 l/h / 690 mbar	1.510 l/h / 560 mbar	1.990 l/h / 530 mbar	2.650 l/h / 840 mbar	3.440 l/h / 750 mbar

Connections

Connection Dimension Heating (Flow, Return)	Connection Dimension Heating (Flow, Return)	G 1 ½″	G 1 ½″	G 1 ½″	G 1 ½″	G 1 ½″
Connection Dimension Heat Source (Flow, Return)	Connection Dimension Heat Source (Flow, Return)	G 1 ½″	G 1 ½″	G 1 ½″	G 1 ½″	G 1 ½″

Dimensions

Height / Width / Depth	Height / Width / Depth	1.183 mm / 595 mm / 600 mm	1.183 mm / 595 mm / 600 mm	1.183 mm / 595 mm / 600 mm	1.183 mm / 595 mm / 600 mm	1.183 mm / 595 mm / 600 mm
Weight (Unpackaged, Net)	Weight (Unpackaged, Net)	145 kg	160 kg	168 kg	176 kg	187 kg
Weight Ready for Operation	Weight Ready for Operation	151 kg	167 kg	175 kg	187 kg	200 kg

Limitations

Flow Temperature (Heating Mode) (min - max)	Flow Temperature (Heating Mode) (min - max)	25 - 65 °C	25 - 65 °C	25 - 65 °C	25 - 65 °C	25 - 65 °C
Flow Temperature (With Back-Up Heater) (Heating Mode) (min - max)	Flow Temperature (With Back-Up Heater) (Heating Mode) (min - max)	25 - 75 °C	25 - 75 °C	25 - 75 °C	25 - 75 °C	25 - 75 °C
Operating Pressure Heat Source (max)	Operating Pressure Heat Source (max)	3 bar	3 bar	3 bar	3 bar	3 bar
Operating Pressure Heating Circuit (max)	Operating Pressure Heating Circuit (max)	3 bar	3 bar	3 bar	3 bar	3 bar
In-Rush Current Heat Pump (With Limiter)	In-Rush Current Heat Pump (With Limiter)	15,0 A	19,0 A	22,0 A	26,0 A	30,0 A
Current Consumption Heat Pump	Current Consumption Heat Pump	20,2 A	21,2 A	24,4 A	26,1 A	31,2 A
Current Consumption Compressor, Control, Back-Up Heater	Current Consumption Compressor, Control, Back-Up Heater	20,2 A	21,2 A	24,4 A	26,1 A	31,2 A
Current Consumption Compressor, Control	Current Consumption Compressor, Control	9 A	10 A	13,2 A	14,9 A	20 A
Current Consumption Control, Back-Up Heater	Current Consumption Control, Back-Up Heater	15,2 A	15,2 A	15,2 A	15,2 A	15,2 A
Volume Installation Room (acc. to EN 378) (min)	Volume Installation Room (acc. to EN 378) (min)	3,41 m³	5,45 m³	5,68 m³	6,93 m³	8,98 m³
Pipe Distance Heat Transfer Fluid (DN 40) (max)	Pipe Distance Heat Transfer Fluid (DN 40) (max)	10 m	10 m	10 m	10 m	10 m
Pipe Distance Heat Transfer Fluid (DN 50) (max)	Pipe Distance Heat Transfer Fluid (DN 50) (max)	30 m	30 m	30 m	30 m	30 m

flexoTHERM exclusive
VWF 57/4 400 V	VWF 87/4 400 V	VWF 117/4 400 V	VWF 157/4 400 V	VWF 197/4 400 V

Power Output and Efficiency

Heat Output / Power Consumption / COP for B0/W35	Heat Output / Power Consumption / COP for B0/W35	5,28 kW / 1,20 kW / 4,41	8,82 kW / 1,82 kW / 4,84	11,18 kW / 2,34 kW / 4,77	14,39 kW / 3,07 kW / 4,69	19,62 kW / 4,32 kW / 4,54
Heat Output / Power Consumption / COP for B0/W55	Heat Output / Power Consumption / COP for B0/W55	5,34 kW / 1,85 kW / 2,89	8,94 kW / 2,78 kW / 3,22	11,33 kW / 3,00 kW / 3,10	14,65 kW / 4,67 kW / 3,14	19,94 kW / 6,26 kW / 3,18

Electrical Connection

Electrical Connection Type	Electrical Connection Type	Cable Connection	Cable Connection	Cable Connection	Cable Connection	Cable Connection
Electrical Power Consumption for Heating Pump for B0/W35, 3 K Spread	Electrical Power Consumption for Heating Pump for B0/W35, 3 K Spread	25 W	30 W	45 W	60 W	74 W
Electrical Power Consumption for Brine Pump for B0/W35	Electrical Power Consumption for Brine Pump for B0/W35	44 W	62 W	64 W	83 W	121 W
Electrical Voltage Supply, Heat Pump Compressor Unit	Electrical Voltage Supply, Heat Pump Compressor Unit	400 V (50 Hz)	400 V (50 Hz)	400 V (50 Hz)	400 V (50 Hz)	400 V (50 Hz)

Refrigerant

Refrigerant	Refrigerant	R410a	R410a	R410a	R410a	R410a
GWP	GWP	2.088	2.088	2.088	2.088	2.088
CO₂ Equivalent	CO₂ Equivalent	3,1 t	5,01 t	5,22 t	6,37 t	8,25 t
Refrigerant Quantity	Refrigerant Quantity	1,50 kg	2,4 kg	2,5 kg	3,05 kg	3,98 kg

Hydraulics

Pump Mass Flow Rate, Heating, 5 K Spread	Pump Mass Flow Rate, Heating, 5 K Spread	920 l/h	1.530 l/h	1.920 l/h	2.450 l/h	3.320 l/h
Pump Mass Flow Rate, Heat Source for B0/W35, 3 K Spread	Pump Mass Flow Rate, Heat Source for B0/W35, 3 K Spread	1.290 l/h	2.320 l/h	3.000 l/h	3.590 l/h	4.780 l/h

Noise Emission

Sound Power Level at B0/W35	Sound Power Level at B0/W35	39,8 dB(A)	42,4 dB(A)	45,2 dB(A)	49,9 dB(A)	48,4 dB(A)
Sound Power Level at B0/W55	Sound Power Level at B0/W55	40,6 dB(A)	49,9 dB(A)	47,2 dB(A)	48,0 dB(A)	48,0 dB(A)

Downloads overline

Downloads headline

ErP

flexoTHERM exclusive VWF 400V ErP Label DocumentVWF 57/4 400 VPDF (0.05 MB)

flexoTHERM exclusive VWF 400V ErP Label DocumentVWF 87/4 400 VPDF (0.06 MB)

flexoTHERM exclusive VWF 400V ErP Label DocumentVWF 117/4 400 VPDF (0.06 MB)

flexoTHERM exclusive VWF 400V ErP Label DocumentVWF 157/4 400 VPDF (0.06 MB)

flexoTHERM exclusive VWF 400V ErP Label DocumentVWF 197/4 400 VPDF (0.06 MB)

flexoTHERM exclusive VWF 400V ErP Datasheet DocumentVWF 57/4 400 V, VWF 87/4 400 V, VWF 117/4 400 V, VWF 157/4 400 V, VWF 197/4 400 VPDF (0.3 MB)

Brine-to-Water Heat PumpflexoTHERM exclusive VWF 400V

Can be flexibly combined with our hot water cylindersThe right solution for every need.

Can be flexibly combined with our hot water cylinders

More than 150 years of experience in heatingQuality that keeps its promises.

More than 150 years of experience in heating

Tailored settings to goAlways in control with myVaillant App.

Tailored settings to go

Energy efficientA+++ energy efficiency rating ensures reduced heating costs.

Energy efficient

Cool in summerPassive cooling to reduce the room temperature.

Cool in summer

Technical data table overline

Technical data table headline

ErP

Electrical Connection

Operation Fluids

Hydraulics

Connections

Dimensions

Limitations

Power Output and Efficiency

Electrical Connection

Refrigerant

Hydraulics

Noise Emission

Downloads overline

Downloads headline

ErP