Head to head
Heatrae Sadia Megaflo Eco 170 vs Mitsubishi Electric Ecodan PUZ-WM85VAA 8.5kW
The Heatrae Sadia Megaflo Eco 170 is a indirect unvented hot water cylinder, 170 litres. The Mitsubishi Electric Ecodan PUZ-WM85VAA 8.5kW is a r32 monobloc air source heat pump, 8.5 kw heat output.
Last reviewed 13 September 2026
Specifications side by side
| Heatrae Sadia Megaflo Eco 170 | Mitsubishi Electric Ecodan PUZ-WM85VAA 8.5kW | |
|---|---|---|
| Dimensions | 1384 x 579 x 600 mm (H x W x D) | 1020 x 1050 x 480 mm (H x W x D) |
| 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 | - |
| Heat output | - | 8.5 kW at A-7/W35 |
| ErP rating | - | 145% (MCS certified) |
| Refrigerant | - | R32, 2.2 kg charge |
| Sound power | - | 58 dBA |
| Sound pressure at 1m | - | 45 dBA |
| Weight | - | 98 kg |
| Max flow temperature | - | 55C (space heating) |
Sources: Heatrae Sadia Megaflo Eco 170, Mitsubishi Electric Ecodan PUZ-WM85VAA 8.5kW. Figures vary by model year and options, so check with the supplier before you commit.
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 →Buy or hire the Ecodan PUZ-WM85VAA 8.5kW if...
An 8.5kW R32 monobloc heat pump, the middle unit in the Ecodan PUZ-WM line and a common size for a three-bed house. It runs on a single-phase 220-240V supply, weighs 98 kg and reaches a 55C flow temperature for radiator systems.
Full Ecodan PUZ-WM85VAA 8.5kW specifications →Common questions
What is the difference between the Heatrae Sadia Megaflo Eco 170 and the Mitsubishi Electric Ecodan PUZ-WM85VAA 8.5kW?
The Heatrae Sadia Megaflo Eco 170 is a indirect unvented hot water cylinder, 170 litres; the Mitsubishi Electric Ecodan PUZ-WM85VAA 8.5kW is a r32 monobloc air source heat pump, 8.5 kW heat output.
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