Head to head
Grant Aerona3 R32 6kW vs Heatrae Sadia Megaflo Eco 210
The Grant Aerona3 R32 6kW is a r32 inverter driven air source heat pump, 6 kw heat output. The Heatrae Sadia Megaflo Eco 210 is a indirect unvented hot water cylinder, 210 litres.
Last reviewed 13 September 2026
Specifications side by side
| Grant Aerona3 R32 6kW | Heatrae Sadia Megaflo Eco 210 | |
|---|---|---|
| Dimensions | 675 x 898 x 379.4 mm (H x W x D) | 1486 x 579 x 600 mm (H x W x D) |
| Warranty | 7 years when installed by a Grant G1 accredited installer | Lifetime guarantee in domestic installations |
| Heat output | 6 kW | - |
| SCOP | 4.61 (35C flow), 3.29 (55C flow) | - |
| Refrigerant | R32 | - |
| Weight | 51 kg | - |
| 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 |
Sources: Grant Aerona3 R32 6kW, Heatrae Sadia Megaflo Eco 210. Figures vary by model year and options, so check with the supplier before you commit.
Buy or hire the Aerona3 R32 6kW if...
A 6kW R32 inverter driven heat pump from Grant's Aerona3 range, a common choice for off-gas-grid homes that previously ran an oil boiler. It carries a 7 year warranty through Grant's G1 installer scheme, one of the longer standard terms in this category.
Full Aerona3 R32 6kW specifications →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 →Common questions
What is the difference between the Grant Aerona3 R32 6kW and the Heatrae Sadia Megaflo Eco 210?
The Grant Aerona3 R32 6kW is a r32 inverter driven air source heat pump, 6 kW heat output; the Heatrae Sadia Megaflo Eco 210 is a indirect unvented hot water cylinder, 210 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.