The Vaillant aroTHERM plus v2, in the larger 10kW and 12kW single-phase (230V) outputs, is supplied here without an interface (heat pump only). These are the highest-output single-phase models in the aroTHERM plus v2 range, suited to larger UK properties with higher heating and hot water demand. Built around the natural refrigerant R290, both models deliver flow temperatures of up to 75°C with a 10-year Global Warming Potential of just 0.02, backed by Vaillant's new Flexible Space Function for reduced installation clearances.
Up to 75°C
Max Flow Temperature
50 dB(A)
Sound Power, A7/W55
GWP 0.02
10-Year Global Warming Potential
196kg
Weight, Ready for Operation
Same Footprint, Higher Output
Both the 10kW and 12kW single-phase models share identical dimensions (1480mm x 1100mm x 450mm) and weight (196kg), simplifying specification and installation planning across this output pairing.
Supplied Without Interface
This listing covers the heat pump unit only. A VWZ AI control module, hydraulic module, or uniTOWER pre-plumbed indoor unit must be selected separately depending on the system design.
RCD and Fuse Requirements
All Vaillant heat pumps must be installed with a Type B RCD rated to 20kHz or greater with a minimum trigger point of 150mA above 1kHz. These 230V models require a Type C, slow-blow, single-pole switching fuse rated to 25A.
Flexible Space Function
Vaillant's new safety concept significantly reduces the protection zone required around the heat pump once activated in the installer settings, providing greater freedom when positioning larger units on site.
High-Output Performance
At 10kW and 12kW, these are the largest single-phase outputs in the aroTHERM plus v2 range, suited to larger homes or properties with higher simultaneous heating and hot water demand.
High Flow Temperatures, Low GWP
Delivers flow temperatures of up to 75°C, while R290's 10-year GWP of just 0.02 makes it significantly more climate-friendly than the traditionally assumed value of 3 often quoted for R290 systems.
Up to 7-Year Extended Guarantee
The aroTHERM plus v2 comes with an extended guarantee of up to 7 years when registered with a Vaillant cylinder on myREWARDS.
Twin-Fan Design
Fitted with two fans (versus one on the 3.5/5kW models) to move the higher air volume of 5100m³/h maximum required at this output, while maintaining a sound power level of 50 dB(A) at A7/W55 conditions.
Discreet Anthracite Casing
The new anthracite casing retains the distinctive look of its award-winning predecessor, blending in perfectly with UK housing stock and suiting retrofit installations.
Model Variants in This Range
| Output |
Vaillant Article Number |
Rated Current |
Weight |
| 10kW |
8000049517 |
25A |
196kg |
| 12kW |
8000049518 |
25A |
196kg |
Technical Specification
| General |
| Dimensions (H x W x D) |
1480mm x 1100mm x 450mm |
| Weight, ready for operation |
196kg |
| Heating Circuit Connection |
G 1¼" |
| IP Rating |
IPX4 |
| Fan Quantity |
2 |
| Fan Air Flow, Maximum |
5100 m³/h |
| Electrical |
| Rated Voltage |
230V (+10%/-15%), 50Hz, 1~/N/PE |
| Rated Current, Maximum |
25A |
| Fuse Size |
25A |
| Fuse Type |
Characteristic C, slow-blow, single-pole switching |
| RCD Type |
Type B, rated to 20kHz or greater, min. trigger 150mA above 1kHz |
| Heating Circuit |
| Heating Water Temperature Range |
20°C to 75°C |
| Minimum / Maximum Volume Flow |
1075 L/h / 2065 L/h |
| Maximum Static Height Difference (outdoor to highest point) |
13m |
| Minimum / Maximum Operating Pressure |
0.5 bar / 2.5 bar |
| Water Volume in the Outdoor Unit |
4.5L |
| Refrigerant Circuit |
| Fluid Type |
R290 |
| Fluid Fill Quantity |
1.3kg |
| Global Warming Potential (GWP), 10-year |
0.02 |
| Compressor Type |
Scroll compressor |
| Compressor Oil Type |
Specific polyalkylene glycol (PAG) |
| Noise & Efficiency |
| Sound Power Level, A7/W55 (ErP/outdoor) |
50 dB(A) |
| Energy Efficiency Class, 35°C |
A+++ |
| Energy Efficiency Class, 55°C |
A+++ |
Frequently Asked Questions
What does 'without Interface' mean for this heat pump?
It means the listing is for the outdoor heat pump unit only. The VWZ AI control module, hydraulic module, or uniTOWER indoor unit must be selected and ordered separately based on the intended system design.
What is the difference between the 10kW and 12kW models?
Both share identical dimensions, weight, and electrical specification. The key difference is heating output – the 12kW model delivers a higher maximum heating capacity for larger properties or higher-demand installations.
What is the SCOP or efficiency class of these models?
Both models are rated A+++ at 35°C flow and 55°C flow, the highest energy efficiency class available for heat pumps of this type.
What size property is the 10kW/12kW range suited to?
These are the largest single-phase outputs in the aroTHERM plus v2 range, generally suited to larger UK homes or properties with higher simultaneous heating and hot water demand. An accurate heat loss calculation for the specific property should confirm the correct output.
Is a three-phase version of these outputs available?
Yes. Vaillant also offer 400V three-phase versions of the 10kW and 12kW aroTHERM plus v2 models for properties with a three-phase electrical supply or where the local DNO requires it.
