Head to head
Ideal Heating Vogue Max Combi C26 26kW vs Worcester Bosch Greenstar 4000 30kW combi
The Worcester Bosch Greenstar 4000 30kW combi puts out 12kW more to the radiators and runs 1.7 litres a minute more hot water.
Last reviewed 13 September 2026
Key differences
- Central heating output: the Worcester Bosch Greenstar 4000 30kW combi puts out 12kW more to the radiators.
- Hot water flow rate: the Worcester Bosch Greenstar 4000 30kW combi runs 1.7 litres a minute more hot water.
- Hot water output: the Worcester Bosch Greenstar 4000 30kW combi has 4kW more hot water output.
- Seasonal efficiency: the Worcester Bosch Greenstar 4000 30kW combi is 1 points more efficient.
Specifications side by side
| Ideal Heating Vogue Max Combi C26 26kW | Worcester Bosch Greenstar 4000 30kW combi | |
|---|---|---|
| Hot water output | 26 kW | 30 kW |
| Central heating output | 18 kW | 30 kW |
| ErP class | A | A |
| Seasonal efficiency | 93% | 94% |
| Dimensions | 740 x 445 x 330 mm | 710 x 400 x 310 mm |
| Weight | 32.4 kg | 32.3 kg |
| Warranty | 10 years | 10 years |
| Hot water flow rate | 10.6 litres per minute | 12.3 litres per minute |
Sources: Ideal Heating Vogue Max Combi C26 26kW, Worcester Bosch Greenstar 4000 30kW combi. Figures vary by model year and options, so check with the supplier before you commit.
Buy or hire the Vogue Max Combi C26 26kW if...
A gas combi boiler with 26 kW of hot water output, sized for a flat or small house with one bathroom. It delivers about 10.6 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 Vogue Max Combi C26 26kW specifications →Buy or hire the Greenstar 4000 30kW combi if...
- you want one that puts out 12kW more to the radiators
- you want one that runs 1.7 litres a minute more hot water
- you want one that has 4kW more hot water output
- you want one that is 1 points more efficient
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 12.3 litres per minute of hot water, which decides how well a shower runs while a tap is on. Warranty: 10 years. Seasonal efficiency is 94%.
Full Greenstar 4000 30kW combi specifications →Common questions
What is the difference between the Ideal Heating Vogue Max Combi C26 26kW and the Worcester Bosch Greenstar 4000 30kW combi?
The Worcester Bosch Greenstar 4000 30kW combi puts out 12kW more to the radiators and runs 1.7 litres a minute more hot water. The Ideal Heating Vogue Max Combi C26 26kW is a gas combi boiler, 26 kW hot water output; the Worcester Bosch Greenstar 4000 30kW combi is a gas combi boiler, 30 kW hot water output.
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