Head to head
Vaillant aroTHERM plus 10kW vs Viessmann Vitocal 150-A13
The Vaillant aroTHERM plus 10kW is a r290 monobloc air source heat pump, 10 kw heat output. The Viessmann Vitocal 150-A13 is a r290 air source heat pump, 8.1 kw heat output.
Last reviewed 13 September 2026
Specifications side by side
| Vaillant aroTHERM plus 10kW | Viessmann Vitocal 150-A13 | |
|---|---|---|
| Heat output | 10 kW | 8.1 kW at A7/W35 |
| Refrigerant | R290 (propane), low GWP | R290 (propane), GWP 0.02 |
| Max flow temperature | 75C | 70C down to -10C outdoor |
| SCOP | up to 5.03 | - |
| COP | - | 4.7-5.0 at A7/W35 |
| Sound power | - | 51 dB(A) assessed total at A7/W55 |
| Dimensions | - | 920 x 450 x 360 mm (H x W x D) (indoor unit); 841 x 1144 x 600 mm (H x W x D, single fan) (outdoor unit) |
| Weight | - | 162 kg (single fan) (outdoor unit) |
Sources: Vaillant aroTHERM plus 10kW, Viessmann Vitocal 150-A13. Figures vary by model year and options, so check with the supplier before you commit.
Buy or hire the aroTHERM plus 10kW if...
The larger aroTHERM plus, sized for a bigger house with a higher heat loss. It keeps the same R290 refrigerant and 75C maximum flow temperature as the smaller units in the range, so it can usually work with existing radiators.
Full aroTHERM plus 10kW specifications →Buy or hire the Vitocal 150-A13 if...
A Vitocal 150-A monobloc-style split heat pump using the natural refrigerant R290, rated at 8.1kW and reaching a 70C flow for boiler-replacement work. Viessmann-trained installers can extend the standard warranty on registration.
Full Vitocal 150-A13 specifications →Common questions
What is the difference between the Vaillant aroTHERM plus 10kW and the Viessmann Vitocal 150-A13?
The Vaillant aroTHERM plus 10kW is a r290 monobloc air source heat pump, 10 kW heat output; the Viessmann Vitocal 150-A13 is a r290 air source heat pump, 8.1 kW heat output.
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