Gas combination boilers or ‘combi’ boilers, heat water directly from the mains when you turn on a tap, so you won’t need a hot water storage cylinder or a cold water storage tank.

Suitable for apartments and small-medium houses, the Worcester Bosch Greenstar 2000 GR2300iW 25 C NG is ideally suited to serving single bathroom properties. Fully compatible with third party external 230V controls as well as a wide range of Worcester mechanical and connected controls, this 25kW combi offers ErP A-rated levels of efficiency alongside excellent reliability.

Product features

• Condenses in hot water mode

• Easy specification, maximum flue length 9M horizontal, 12M vertical (60/100)

• Quick installation

• Option to pipe vertically to boiler

• Easy service access via removable side panels

• Modulates down to 4.8kW

• 35°C hot water temperature rise (10 and 12LPM)

• Quick tap water-saving function in ECO mode with 2.5LPM min flow

• 5 year warranty

Delivery in approximately 5-7 working days