Head to head
Glow-worm Energy Combi 25C 25kW vs LG Therma V Monobloc S 9.00kW
The Glow-worm Energy Combi 25C 25kW is a gas combi boiler, 25.7 kw hot water output. The LG Therma V Monobloc S 9.00kW is a r32 monobloc air source heat pump, 9.00 kw heat output.
Last reviewed 13 September 2026
Specifications side by side
| Glow-worm Energy Combi 25C 25kW | LG Therma V Monobloc S 9.00kW | |
|---|---|---|
| Dimensions | 700 x 390 x 280 mm | 1239 x 1380 x 330 mm (H x W x D) |
| Weight | 32 kg | 90.0 kg |
| Hot water output | 25.7 kW | - |
| Central heating output | 18 kW | - |
| ErP class | A | - |
| Seasonal efficiency | 94% | - |
| Warranty | 7 years | - |
| Hot water flow rate | 10.4 litres per minute | - |
| Heat output | - | 9.00 kW at 7C/35C flow |
| SCOP | - | 4.55 (average climate, 35C flow) |
| Refrigerant | - | R32, GWP 675 |
| Sound power | - | 61 dB(A) rated, 56 dB(A) low noise mode |
| Max flow temperature | - | 65C |
Sources: Glow-worm Energy Combi 25C 25kW, LG Therma V Monobloc S 9.00kW. Figures vary by model year and options, so check with the supplier before you commit.
Buy or hire the Energy Combi 25C 25kW if...
A gas combi boiler with 25.7 kW of hot water output, sized for a flat or small house with one bathroom. It delivers about 10.4 litres per minute of hot water, which decides how well a shower runs while a tap is on. Warranty: 7 years. Seasonal efficiency is 94%.
Full Energy Combi 25C 25kW specifications →Buy or hire the Therma V Monobloc S 9.00kW if...
An LG Therma V Monobloc S rated at 9.00kW, using R32 refrigerant and reaching a 65C flow. A low noise mode drops the sound power to 56 dB(A), useful where the outdoor unit sits close to a boundary or window.
Full Therma V Monobloc S 9.00kW specifications →Common questions
What is the difference between the Glow-worm Energy Combi 25C 25kW and the LG Therma V Monobloc S 9.00kW?
The Glow-worm Energy Combi 25C 25kW is a gas combi boiler, 25.7 kW hot water output; the LG Therma V Monobloc S 9.00kW is a r32 monobloc air source heat pump, 9.00 kW heat output.
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