Head to head
Daikin Altherma 3 H HT EPRA14DV3 vs Viessmann Vitocal 150-A10
The Daikin Altherma 3 H HT EPRA14DV3 is a r32 monobloc high-temperature air source heat pump, class 14. The Viessmann Vitocal 150-A10 is a r290 air source heat pump, 7.3 kw heat output.
Last reviewed 13 September 2026
Specifications side by side
| Daikin Altherma 3 H HT EPRA14DV3 | Viessmann Vitocal 150-A10 | |
|---|---|---|
| Heat output | 10.17 kW (nominal heating) | 7.3 kW at A7/W35 |
| Refrigerant | R32, 4.2 kg charge | R290 (propane), GWP 0.02 |
| Dimensions | 990 x 1270 x 460 mm (H x W x D) (outdoor unit) | 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 | 146 kg (single-phase) (outdoor unit) | 162 kg (single fan) (outdoor unit) |
| Max flow temperature | 70C | 70C down to -10C outdoor |
| SCOP | 4.51-4.71 (35C flow), 3.57-3.58 (55C flow) | - |
| Sound pressure | 43 dBA (heating) | - |
| COP | - | 4.7-5.0 at A7/W35 |
| Sound power | - | 51 dB(A) assessed total at A7/W55 |
Sources: Daikin Altherma 3 H HT EPRA14DV3, Viessmann Vitocal 150-A10. Figures vary by model year and options, so check with the supplier before you commit.
Buy or hire the Altherma 3 H HT EPRA14DV3 if...
A high-temperature monobloc heat pump reaching a 70C flow, aimed squarely at replacing a boiler on an existing radiator system without upgrading radiators. Its class 14 size gives around 10.2kW of heat output, suiting a three or four-bed house.
Full Altherma 3 H HT EPRA14DV3 specifications →Buy or hire the Vitocal 150-A10 if...
A Vitocal 150-A monobloc-style split heat pump using the natural refrigerant R290, rated at 7.3kW and reaching a 70C flow for boiler-replacement work. Viessmann-trained installers can extend the standard warranty on registration.
Full Vitocal 150-A10 specifications →Common questions
What is the difference between the Daikin Altherma 3 H HT EPRA14DV3 and the Viessmann Vitocal 150-A10?
The Daikin Altherma 3 H HT EPRA14DV3 is a r32 monobloc high-temperature air source heat pump, class 14; the Viessmann Vitocal 150-A10 is a r290 air source heat pump, 7.3 kW heat output.
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