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Worcester Bosch Greenstar 30CDi Erp Classic Gas Heat Only Boiler

Worcester Bosch Greenstar 30CDi Classic Regular boiler is top performing wall mounted A rated boiler with highest levels of heating and hot water comfort. This top of the range boiler hosts a range of energy-saving features which consists of high-powered outputs that are capable enough to supply heating and hot water to large properties with two or more bathrooms, with a raised bar in terms of performance, efficiency and economy. This boiler is ideal for households where mains water pressure is low. Working alongside a hot water cylinder this boiler is powerful enough to replenish the supply quickly. Worcester Bosch as a company itself has raised bar in heating industry's performance standards, efficiency and styling, becoming arguably the most well known brand in the boiler industry. As Greenstar range has already acclaimed Which? Best Buy and CORGI Boiler of the Year awards, makes this boiler an excellent choice. Worcester Bosch Greenstar series can cut energy bills upto 20% annually or up to 30% when replaced to a old G-Rated boiler. These savings mean that after some years the boiler will essentially pay for itself, makes it valid future investment

  • Highest central heating outputs
  • User friendly control panel
  • Compatible with wide range of controls
  • Compatible with existing cylinder and Pipe work
  • Built-in heating temperature control
  • Improves heating and hot water performance
  • Compatible with S and Y plan controls
  • Frost protection included, reduces frost risk
  • Compatible with solar panels for energy and cost savings
  • Ideal for properties where heating includes hot water storage cylinder
  • New WB7 heat exchanger delivers high efficiency and reduces energy bills
  • Quick installation




Heat only boilers are also referred as traditional, open vent, conventional or regular boilers. If the boiler you’re replacing is very old, it is most likely a heat only boiler. One of the other clues is that there is a separate circulating pump next to hot water cylinder. Heat only boilers provide only heat for your central heating so these boilers require a hot water cylinder to be installed within the system in order to provide hot water. These boilers are ideal for homes that already have a traditional heating and hot water system which is linked to a separate hot water cylinder. These can be a great boiler choice as new smart design of  heat only boilers with over 90% efficiency, are capable enough to meet high heating and hot water demands of most sizes of homes with quality and reliability year after year. These boilers are ideal where main water pressure is low.


These boilers operate with separate hot water cylinder and a cold water storage tank in the loft which feeds the hot water cylinder and another tank maintains the water level of central heating system.Then the water is pumped through the system which will either be heated up or stored as hot water and then used as and when is needed. Also the hot water feed will be pumped around your home to keep it warm. Hot water cylinder programmer needs to be programmed in advance to heat hot water to be used later on. Heat only boiler supplies hot water to multiple taps without loss of pressure and flow rate. Two boilers can also be combined together to supply high hot water demand for larger properties. They enhance heating and hot water demands in all sizes of homes where main water pressure is low.


  • Perfect for houses with lot of hot water demand
  • Ideal where there are two or more bathrooms
  • A good option in areas where water pressure is low
  • Compatible with solar water heating sytems
  • Heat exchanger delivers high efficiency and reliability
  • Compatible with CondenseSure accessory - eliminates risk of condensate pipe freezing