Head to head
Intergas Xclusive 36 vs Worcester Bosch Greenstar 4000 25kW combi
The Intergas Xclusive 36 runs 8.4 litres a minute more hot water.
Last reviewed 6 October 2026
Key differences
- Hot water flow rate: the Intergas Xclusive 36 runs 8.4 litres a minute more hot water.
Specifications side by side
| Intergas Xclusive 36 | Worcester Bosch Greenstar 4000 25kW combi | |
|---|---|---|
| Central heating output | 4.00 - 26.60 kW | 25 kW |
| Hot water flow rate | 18.90 (dT 25 C) (l/min); 13.50 (dT 35 C) (l/min) | 10.5 litres per minute |
| Power | 36 kW | - |
| Height | 826 mm | - |
| Hot water output | - | 25 kW |
| ErP class | - | A |
| Seasonal efficiency | - | 94% |
| Dimensions | - | 710 x 400 x 310 mm |
| Weight | - | 32.0 kg |
| Warranty | - | 10 years |
Sources: Intergas Xclusive 36, Worcester Bosch Greenstar 4000 25kW combi. Figures vary by model year and options, so check with the supplier before you commit.
Buy or hire the Xclusive 36 if...
- you want one that runs 8.4 litres a minute more hot water
A wall-hung condensing combi boiler for installers fitting domestic heating and hot water without a cylinder. The Xclusive has a touchscreen panel, built-in expansion vessel and filling loop, and the larger output suits homes with higher hot water demand.
Full Xclusive 36 specifications →Buy or hire the Greenstar 4000 25kW combi if...
A gas combi boiler with 25 kW of hot water output, sized for a flat or small house with one bathroom. It delivers about 10.5 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 25kW combi specifications →Common questions
What is the difference between the Intergas Xclusive 36 and the Worcester Bosch Greenstar 4000 25kW combi?
The Intergas Xclusive 36 runs 8.4 litres a minute more hot water. The Intergas Xclusive 36 is a 36 kW combi boiler for homes, with a 10 year parts and labour warranty; the Worcester Bosch Greenstar 4000 25kW combi is a gas combi boiler, 25 kW hot water output.
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