Head to head
Baxi 800 Combi 2 30kW vs LG Therma V Monobloc S 9.00kW
The Baxi 800 Combi 2 30kW is a gas combi boiler, 30 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
| Baxi 800 Combi 2 30kW | LG Therma V Monobloc S 9.00kW | |
|---|---|---|
| Dimensions | 700 x 390 x 285 mm | 1239 x 1380 x 330 mm (H x W x D) |
| Hot water output | 30 kW | - |
| Central heating output | 21.2 kW | - |
| ErP class | A | - |
| Seasonal efficiency | 93% | - |
| Warranty | 10 years | - |
| Hot water flow rate | 12.2 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 |
| Weight | - | 90.0 kg |
| Max flow temperature | - | 65C |
Sources: Baxi 800 Combi 2 30kW, 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 800 Combi 2 30kW if...
A gas combi boiler with 30 kW of hot water output, sized for a three-bed house with one or two bathrooms. It delivers about 12.2 litres per minute of hot water, which decides how well a shower runs while a tap is on. Warranty: 10 years. Seasonal efficiency is 93%.
Full 800 Combi 2 30kW 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 Baxi 800 Combi 2 30kW and the LG Therma V Monobloc S 9.00kW?
The Baxi 800 Combi 2 30kW is a gas combi boiler, 30 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.
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.