Head to head
Mitsubishi Electric Ecodan PUZ-WM85VAA 8.5kW vs Telford Tempest 170 Direct
The Mitsubishi Electric Ecodan PUZ-WM85VAA 8.5kW is a r32 monobloc air source heat pump, 8.5 kw heat output. The Telford Tempest 170 Direct is a direct unvented hot water cylinder, 170 litres.
Last reviewed 13 September 2026
Specifications side by side
| Mitsubishi Electric Ecodan PUZ-WM85VAA 8.5kW | Telford Tempest 170 Direct | |
|---|---|---|
| Dimensions | 1020 x 1050 x 480 mm (H x W x D) | 1200 mm high x 510 mm diameter (approx.) |
| Weight | 98 kg | 40 kg empty, 208 kg full |
| 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 | - |
| Max flow temperature | 55C (space heating) | - |
| Capacity | - | 170 litres |
| Immersion heater | - | 2 x 3kW, 240V single phase |
| Max inlet pressure | - | 3 bar (inlet control group) |
| Warranty | - | Lifetime guarantee on the cylinder (25 years internal), 2 years on components |
Sources: Mitsubishi Electric Ecodan PUZ-WM85VAA 8.5kW, Telford Tempest 170 Direct. Figures vary by model year and options, so check with the supplier before you commit.
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 →Buy or hire the Tempest 170 Direct if...
A 170 litre direct unvented cylinder from Telford's Tempest range, built in duplex stainless steel with twin 3kW immersions rather than a boiler coil. It suits an all-electric property, and the cylinder body carries a lifetime guarantee when serviced annually.
Full Tempest 170 Direct specifications →Common questions
What is the difference between the Mitsubishi Electric Ecodan PUZ-WM85VAA 8.5kW and the Telford Tempest 170 Direct?
The Mitsubishi Electric Ecodan PUZ-WM85VAA 8.5kW is a r32 monobloc air source heat pump, 8.5 kW heat output; the Telford Tempest 170 Direct is a direct unvented hot water cylinder, 170 litres.
GetBrent is an independent directory and is not a dealer for, nor affiliated with, either manufacturer. Model and brand names are the trademarks of their owners.