Head to head
Daikin Altherma 3 H HT EPRA14DV3 vs Joule Cyclone Air 150L Direct
The Daikin Altherma 3 H HT EPRA14DV3 is a r32 monobloc high-temperature air source heat pump, class 14. The Joule Cyclone Air 150L Direct is a direct unvented hot water cylinder, 150 litres.
Last reviewed 13 September 2026
Specifications side by side
| Daikin Altherma 3 H HT EPRA14DV3 | Joule Cyclone Air 150L Direct | |
|---|---|---|
| Dimensions | 990 x 1270 x 460 mm (H x W x D) (outdoor unit) | 1196 x 540 x 540 mm (H x W x D) |
| Heat output | 10.17 kW (nominal heating) | - |
| SCOP | 4.51-4.71 (35C flow), 3.57-3.58 (55C flow) | - |
| Refrigerant | R32, 4.2 kg charge | - |
| Sound pressure | 43 dBA (heating) | - |
| Weight | 146 kg (single-phase) (outdoor unit) | - |
| Max flow temperature | 70C | - |
| Capacity | - | 150 litres |
| Heat-up time | - | 57 minutes (full tank, 6kW immersion) |
| Immersion heater | - | 6kW (2 x 3kW) |
| Warranty | - | 1 year manufacturer's warranty |
Sources: Daikin Altherma 3 H HT EPRA14DV3, Joule Cyclone Air 150L Direct. 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 Cyclone Air 150L Direct if...
A 150 litre direct unvented cylinder from Joule's Cyclone range, heated by twin immersion elements rather than a boiler or heat pump coil. It suits a property with electric-only heating or a holiday let, reheating a full tank in around 57 minutes.
Full Cyclone Air 150L Direct specifications →Common questions
What is the difference between the Daikin Altherma 3 H HT EPRA14DV3 and the Joule Cyclone Air 150L Direct?
The Daikin Altherma 3 H HT EPRA14DV3 is a r32 monobloc high-temperature air source heat pump, class 14; the Joule Cyclone Air 150L Direct is a direct unvented hot water cylinder, 150 litres.
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