Head to head
Daikin Altherma 3 H HT EPRA14DV3 vs Heatrae Sadia Megaflo Eco 170
The Daikin Altherma 3 H HT EPRA14DV3 is a r32 monobloc high-temperature air source heat pump, class 14. The Heatrae Sadia Megaflo Eco 170 is a indirect unvented hot water cylinder, 170 litres.
Last reviewed 13 September 2026
Specifications side by side
| Daikin Altherma 3 H HT EPRA14DV3 | Heatrae Sadia Megaflo Eco 170 | |
|---|---|---|
| Dimensions | 990 x 1270 x 460 mm (H x W x D) (outdoor unit) | 1384 x 579 x 600 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 | - | 170 litres |
| Heat-up time | - | 22 minutes (15 L/min recovery, 15C to 60C) |
| Max inlet pressure | - | 1.6 MPa (16 bar) |
| Immersion heater | - | 3kW incoloy immersion, back-up |
| Warranty | - | Lifetime guarantee in domestic installations |
Sources: Daikin Altherma 3 H HT EPRA14DV3, Heatrae Sadia Megaflo Eco 170. 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 Megaflo Eco 170 if...
A 170 litre indirect unvented cylinder from Heatrae Sadia's Megaflo Eco range, one of the most fitted cylinder brands in the UK. It reheats in about 22 minutes at a 15 litre/min flow rate and carries a lifetime guarantee in a domestic installation.
Full Megaflo Eco 170 specifications →Common questions
What is the difference between the Daikin Altherma 3 H HT EPRA14DV3 and the Heatrae Sadia Megaflo Eco 170?
The Daikin Altherma 3 H HT EPRA14DV3 is a r32 monobloc high-temperature air source heat pump, class 14; the Heatrae Sadia Megaflo Eco 170 is a indirect unvented hot water cylinder, 170 litres.
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