Head to head
Heatrae Sadia Multipoint 100 vs Worcester Bosch Greenstar 5800i AW 5kW
The Heatrae Sadia Multipoint 100 is a electric unvented water heater, 100 litres. 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
| Heatrae Sadia Multipoint 100 | Worcester Bosch Greenstar 5800i AW 5kW | |
|---|---|---|
| Dimensions | 1234 x 1207 x 454 (V) / 454 x 454 x 454 (H) mm | 800 x 1100 x 540 mm (H x W x D) |
| Capacity | 100 litres | - |
| Power | 3 kW, 230V | - |
| Heat-up time | approx. 112 minutes | - |
| Recovery time | approx. 79 minutes | - |
| Max operating pressure | 10 bar | - |
| Warranty | 2 years full warranty, 10 years on the inner cylinder | - |
| Heat output | - | 6.80 kW at 7/35C |
| SCOP | - | 4.53 (MCS, 35C flow) |
| Refrigerant | - | R290 (propane) |
| Sound pressure | - | 42 dB(A) |
| Weight | - | 143 kg |
| Max flow temperature | - | 75C |
Sources: Heatrae Sadia Multipoint 100, 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 Multipoint 100 if...
A 100 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 100 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 Heatrae Sadia Multipoint 100 and the Worcester Bosch Greenstar 5800i AW 5kW?
The Heatrae Sadia Multipoint 100 is a electric unvented water heater, 100 litres; the Worcester Bosch Greenstar 5800i AW 5kW is a r290 monobloc air source heat pump, 6.80 kW heat output.
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