The Worcester Bosch Greenstar 2000 GR2301iW 30 C NG combi is suitable for apartments and small-medium homes with the requirement to simultaneously deliver hot water for one bath and one shower. Fully compatible with Worcester wireless RF controls, and third party external 230V controls, this combi boiler offers ErP A-rated levels of efficiency alongside excellent reliability. Modulating down to 3kW, the Greenstar 2000 is a great option for homeowners looking to reduce gas consumption. Quiet Mark accredited and boasting the Which Best Buy Award, complete peace of mind is provided with a 7-year guarantee when installed with any system filter.