Product Description Buy the Worcester Greenstar 25i ErP combi boiler for highly efficient heating that's easy to install and maintain. With its standard wall frame, allowing for space for pipes behind the boiler, and a low lift weight, this combi boiler is simple to site even on the most difficult projects. It also features a larger condensate syphon to effectively eliminate the risk of frozen condensate, allowing for installation in garages and lofts. This large condensate syphon has been shown to prevent condensate from freezing at temperatures as low as -15°C for up to 48h. This level of protection requires 32mm pipework that should not exceed 3m. The Worcester Bosch Greenstar range has an ErP rating of ‘A’ and features the WB5 heat exchanger that delivers efficiency and reliability. This means that the boiler has the potential to create great savings on energy bills by reducing fuel use. Product Features ‘A’ ErP rating for heating and hot water Internal space increased for ease of access Digital display includes quick info button to provide boiler status and diagnostic info Simple weather compensation option for system efficiency Clear controls for optimised heating and hot water temperatures Improved output and flow rates for increased hot water comfort Large siphon inside the boiler to prevent condensate pipe freezing | 
