Head to head
Heatrae Sadia Megaflo Eco 250 vs LG Therma V Monobloc S 5.50kW
The Heatrae Sadia Megaflo Eco 250 is a indirect unvented hot water cylinder, 250 litres. The LG Therma V Monobloc S 5.50kW is a r32 monobloc air source heat pump, 5.50 kw heat output.
Last reviewed 13 September 2026
Specifications side by side
| Heatrae Sadia Megaflo Eco 250 | LG Therma V Monobloc S 5.50kW | |
|---|---|---|
| Dimensions | 1738 x 579 x 600 mm (H x W x D) | 1239 x 834 x 330 mm (H x W x D) |
| Capacity | 250 litres | - |
| Heat-up time | 34 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 | - | 5.50 kW at 7C/35C flow |
| SCOP | - | 4.46 (average climate, 35C flow) |
| Refrigerant | - | R32, GWP 675 |
| Sound power | - | 57 dB(A) rated, 54 dB(A) low noise mode |
| Weight | - | 89.5 kg |
| Max flow temperature | - | 65C |
Sources: Heatrae Sadia Megaflo Eco 250, LG Therma V Monobloc S 5.50kW. Figures vary by model year and options, so check with the supplier before you commit.
Buy or hire the Megaflo Eco 250 if...
A 250 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 34 minutes at a 15 litre/min flow rate and carries a lifetime guarantee in a domestic installation.
Full Megaflo Eco 250 specifications →Buy or hire the Therma V Monobloc S 5.50kW if...
An LG Therma V Monobloc S rated at 5.50kW, using R32 refrigerant and reaching a 65C flow. A low noise mode drops the sound power to 54 dB(A), useful where the outdoor unit sits close to a boundary or window.
Full Therma V Monobloc S 5.50kW specifications →Common questions
What is the difference between the Heatrae Sadia Megaflo Eco 250 and the LG Therma V Monobloc S 5.50kW?
The Heatrae Sadia Megaflo Eco 250 is a indirect unvented hot water cylinder, 250 litres; the LG Therma V Monobloc S 5.50kW is a r32 monobloc air source heat pump, 5.50 kW heat output.
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