Worcester System & Combi Boilers
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Quick Feature Guide for System & Combi Worcester Boilers


combi boilerWith quite a few different gas combi boiler makers in the market, it would be nice to have a short list so that you can quickly review the main features.

The manufacturer feels these points are important to their product, so here is some info about a dozen or so System & Combi Worcester Boilers.

Can fill up a typical kitchen sink in 45 seconds or less (flow rate)

  • Greenstar I – 45 seconds | COMBI BOILER
  • Greenstar Si Compact – 45 seconds | COMBI BOILER
  • Greenstar CDi Classic – 32 seconds | COMBI BOILER
  • Greenstar CDi Compact – 37 seconds | COMBI BOILER
  • Greenstar CDi Highflow – 19 seconds | COMBI BOILER

Can be used in conjunction with Solar Thermal Panels & Storage Cylinders

  • Greenstar i System (9kW to 24kW) | SYSTEM BOILER
  • Greenstar i System (27kW and 30kW) | SYSTEM BOILER
  • Greenstar CDi Classic System | SYSTEM BOILER
  • Greenstar Ri (12kW to 24kW) Regular Boiler
  • Greenstar Ri (27kW and 30kW) Regular Boiler
  • Greenstar CDi Classic Regular Boiler
  • Greenstar CDi FS Regular Boiler

Suitable for Small to Medium size homes

  • Greenstar I | COMBI BOILER
  • Greenstar Si Compact | COMBI BOILER
  • Greenstar Ri (12kW to 24kW) Regular Boiler

Suitable for Medium to Large homes

  • Greenstar CDi Classic | COMBI BOILER
  • Greenstar CDi Compact | COMBI BOILER
  • Greenstar CDi Highflow | COMBI BOILER
  • Greenstar i System (9kW to 24kW) | SYSTEM BOILER
  • Greenstar CDi Classic System | SYSTEM BOILER
  • GB162 | SYSTEM BOILER

As you can see, there are three different types of boilers in the list: Combi, System & Regular. As a general rule, combi boilers are the ones that provide instant hot water, but are not that well suited to large homes with high levels of hot water demand.

If you have a larger home with more than one bathroom, then it’s more likely that you will need a system or regular type boiler.

Information courtesy of Feature Guide for System & Combi Worcester Boilers: https://www.worcester-bosch.co.uk/