Head to head
Daikin Altherma 3 H HT EPRA14DV3 vs Vaillant aroTHERM plus 5kW
The Daikin Altherma 3 H HT EPRA14DV3 is a r32 monobloc high-temperature air source heat pump, class 14. The Vaillant aroTHERM plus 5kW is a r290 monobloc air source heat pump, 5 kw heat output.
Last reviewed 13 September 2026
Specifications side by side
| Daikin Altherma 3 H HT EPRA14DV3 | Vaillant aroTHERM plus 5kW | |
|---|---|---|
| Heat output | 10.17 kW (nominal heating) | 5 kW |
| SCOP | 4.51-4.71 (35C flow), 3.57-3.58 (55C flow) | up to 5.03 |
| Refrigerant | R32, 4.2 kg charge | R290 (propane), low GWP |
| Dimensions | 990 x 1270 x 460 mm (H x W x D) (outdoor unit) | 965 x 1100 x 450 mm (H x W x D) |
| Weight | 146 kg (single-phase) (outdoor unit) | 128 kg (operating) |
| Max flow temperature | 70C | 75C |
| Sound pressure | 43 dBA (heating) | - |
| Sound power | - | 53 dB(A) at A7/W35, 58 dB(A) at A7/W55 |
Sources: Daikin Altherma 3 H HT EPRA14DV3, Vaillant aroTHERM plus 5kW. 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 aroTHERM plus 5kW if...
The smallest aroTHERM plus, sized for a well-insulated flat or small house. It uses the natural refrigerant R290 rather than an F-gas, and reaches a 75C flow temperature, which helps it work with existing radiators on a retrofit job.
Full aroTHERM plus 5kW specifications →Common questions
What is the difference between the Daikin Altherma 3 H HT EPRA14DV3 and the Vaillant aroTHERM plus 5kW?
The Daikin Altherma 3 H HT EPRA14DV3 is a r32 monobloc high-temperature air source heat pump, class 14; the Vaillant aroTHERM plus 5kW is a r290 monobloc air source heat pump, 5 kW heat output.
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