Head to head
Heatrae Sadia Multipoint 50 vs Worcester Bosch Greenstar 5800i AW 7kW
The Heatrae Sadia Multipoint 50 is a electric unvented water heater, 50 litres. The Worcester Bosch Greenstar 5800i AW 7kW is a r290 monobloc air source heat pump, 7.97 kw heat output.
Last reviewed 13 September 2026
Specifications side by side
| Heatrae Sadia Multipoint 50 | Worcester Bosch Greenstar 5800i AW 7kW | |
|---|---|---|
| Dimensions | 1007 x 997 x 350 (V) / 371 x 371 x 350 (H) mm | 800 x 1100 x 540 mm (H x W x D) |
| Capacity | 50 litres | - |
| Power | 3 kW, 230V | - |
| Heat-up time | approx. 58 minutes | - |
| Recovery time | approx. 41 minutes | - |
| Max operating pressure | 10 bar | - |
| Warranty | 2 years full warranty, 10 years on the inner cylinder | - |
| Heat output | - | 7.97 kW at 7/35C |
| SCOP | - | 4.54 (MCS, 35C flow) |
| Refrigerant | - | R290 (propane) |
| Sound pressure | - | 42 dB(A) |
| Weight | - | 143 kg |
| Max flow temperature | - | 75C |
Sources: Heatrae Sadia Multipoint 50, Worcester Bosch Greenstar 5800i AW 7kW. Figures vary by model year and options, so check with the supplier before you commit.
Buy or hire the Multipoint 50 if...
A 50 litre electric unvented water heater from Heatrae Sadia's Multipoint range, for a property with no boiler-fed hot water such as an outbuilding or small flat. It runs from a 3kW element and carries a 10 year warranty on the inner cylinder.
Full Multipoint 50 specifications →Buy or hire the Greenstar 5800i AW 7kW if...
The larger 5800i AW unit, for a slightly bigger house than the 5kW model while sharing the same cabinet size and 42 dB(A) sound rating. Its R290 refrigerant and 75C flow temperature suit a radiator-based retrofit.
Full Greenstar 5800i AW 7kW specifications →Common questions
What is the difference between the Heatrae Sadia Multipoint 50 and the Worcester Bosch Greenstar 5800i AW 7kW?
The Heatrae Sadia Multipoint 50 is a electric unvented water heater, 50 litres; the Worcester Bosch Greenstar 5800i AW 7kW is a r290 monobloc air source heat pump, 7.97 kW heat output.
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