Head to head
Mitsubishi Electric Ecodan PUZ-WM60VAA 6.0kW vs Worcester Bosch Greenstar 5800i AW 5kW
The Mitsubishi Electric Ecodan PUZ-WM60VAA 6.0kW is a r32 monobloc air source heat pump, 6.0 kw heat output. The Worcester Bosch Greenstar 5800i AW 5kW is a r290 monobloc air source heat pump, 6.80 kw heat output.
Last reviewed 13 September 2026
Specifications side by side
| Mitsubishi Electric Ecodan PUZ-WM60VAA 6.0kW | Worcester Bosch Greenstar 5800i AW 5kW | |
|---|---|---|
| Heat output | 6.0 kW at -7C outdoor / 35C flow | 6.80 kW at 7/35C |
| SCOP | 3.20 (35C flow), 3.30 (55C flow) | 4.53 (MCS, 35C flow) |
| Refrigerant | R32 | R290 (propane) |
| Dimensions | 1020 x 1050 x 480 mm (H x W x D) | 800 x 1100 x 540 mm (H x W x D) |
| Weight | 98 kg | 143 kg |
| Max flow temperature | 55C (space heating) | 75C |
| Sound power | 60 dBA | - |
| Sound pressure at 1m | 45 dBA | - |
| Sound pressure | - | 42 dB(A) |
Sources: Mitsubishi Electric Ecodan PUZ-WM60VAA 6.0kW, Worcester Bosch Greenstar 5800i AW 5kW. Figures vary by model year and options, so check with the supplier before you commit.
Buy or hire the Ecodan PUZ-WM60VAA 6.0kW if...
A 6.0kW R32 monobloc heat pump sized for a well-insulated flat or small house. It is quoted at SCOP 3.20 at a 35C flow temperature, and Mitsubishi Electric's accredited installer scheme extends cover on the unit. It weighs 98 kg and stands 1020mm tall.
Full Ecodan PUZ-WM60VAA 6.0kW specifications →Buy or hire the Greenstar 5800i AW 5kW if...
Worcester Bosch's entry-size 5800i AW, using the natural refrigerant R290 and reaching a 75C flow temperature for existing radiator systems. It is marketed as one of the quieter units in this size at 42 dB(A) sound pressure.
Full Greenstar 5800i AW 5kW specifications →Common questions
What is the difference between the Mitsubishi Electric Ecodan PUZ-WM60VAA 6.0kW and the Worcester Bosch Greenstar 5800i AW 5kW?
The Mitsubishi Electric Ecodan PUZ-WM60VAA 6.0kW is a r32 monobloc air source heat pump, 6.0 kW heat output; the Worcester Bosch Greenstar 5800i AW 5kW is a r290 monobloc air source heat pump, 6.80 kW heat output.
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