Head to head
Heatrae Sadia Megaflo Eco 210 vs Worcester Bosch Greenstar 5800i AW 5kW
The Heatrae Sadia Megaflo Eco 210 is a indirect unvented hot water cylinder, 210 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 Megaflo Eco 210 | Worcester Bosch Greenstar 5800i AW 5kW | |
|---|---|---|
| Dimensions | 1486 x 579 x 600 mm (H x W x D) | 800 x 1100 x 540 mm (H x W x D) |
| Capacity | 210 litres | - |
| Heat-up time | 28 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 | - | 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 Megaflo Eco 210, 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 Megaflo Eco 210 if...
A 210 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 28 minutes at a 15 litre/min flow rate and carries a lifetime guarantee in a domestic installation.
Full Megaflo Eco 210 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 Megaflo Eco 210 and the Worcester Bosch Greenstar 5800i AW 5kW?
The Heatrae Sadia Megaflo Eco 210 is a indirect unvented hot water cylinder, 210 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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