In the 214/15 report and for the fourth year running the entire range of Worcester Greenstar gas boilers have been awarded Which? Best Buy, the only boiler manufacturer to have been awarded Best Buy status*. Greenstar CDi Compact gas combi boilers are the newest addition to our top of the range boilers and have the ability to condense in both heating and hot water modes. The boiler’s ease of installation and cupboard-size dimensions are thanks to the new ultra-compact WB7 heat exchanger, easy access hydraulics and colour coded wiring connectors. The boiler comes supplied with an innovative wall-mounting jig that allows installers to easily pre-plumb the condensate, CH flow, DHW outlet, gas, DCW inlet, PRV installer connection and CH return.