Head to head
LG Therma V Monobloc S 5.50kW vs Vaillant aroTHERM plus 10kW
The LG Therma V Monobloc S 5.50kW is a r32 monobloc air source heat pump, 5.50 kw heat output. The Vaillant aroTHERM plus 10kW is a r290 monobloc air source heat pump, 10 kw heat output.
Last reviewed 13 September 2026
Specifications side by side
| LG Therma V Monobloc S 5.50kW | Vaillant aroTHERM plus 10kW | |
|---|---|---|
| Heat output | 5.50 kW at 7C/35C flow | 10 kW |
| SCOP | 4.46 (average climate, 35C flow) | up to 5.03 |
| Refrigerant | R32, GWP 675 | R290 (propane), low GWP |
| Max flow temperature | 65C | 75C |
| Sound power | 57 dB(A) rated, 54 dB(A) low noise mode | - |
| Dimensions | 1239 x 834 x 330 mm (H x W x D) | - |
| Weight | 89.5 kg | - |
Sources: LG Therma V Monobloc S 5.50kW, Vaillant aroTHERM plus 10kW. Figures vary by model year and options, so check with the supplier before you commit.
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 →Buy or hire the aroTHERM plus 10kW if...
The larger aroTHERM plus, sized for a bigger house with a higher heat loss. It keeps the same R290 refrigerant and 75C maximum flow temperature as the smaller units in the range, so it can usually work with existing radiators.
Full aroTHERM plus 10kW specifications →Common questions
What is the difference between the LG Therma V Monobloc S 5.50kW and the Vaillant aroTHERM plus 10kW?
The LG Therma V Monobloc S 5.50kW is a r32 monobloc air source heat pump, 5.50 kW heat output; the Vaillant aroTHERM plus 10kW is a r290 monobloc air source heat pump, 10 kW heat output.
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