Worcester Greenstar CDi Classic: the regular boiler option

The CDi Classic regular boiler — the facts that change the job

• Retains the existing cylinder, no re-plumbing of hot water pipework
• Suits houses with multiple bathrooms used at the same time
• Keeps immersion heater backup available during boiler downtime
• A straight like-for-like swap in most older regular-boiler homes
• Cylinder condition should be checked before committing to keep it

How we read the CDi Classic regular boiler on site

Because it feeds an existing cylinder rather than heating water on demand, the CDi Classic suits large houses with genuinely high simultaneous hot water use — several bathrooms running at once outpaces most combis regardless of flow rate. It also keeps a system that already works well for a household used to a hot water cylinder and immersion backup.

Where we deal with this

• Lansdown (BA1) · 9 mi
• Glastonbury (BA6) · 13 mi
• Bath (BA1) · 8 mi
• Wells (BA5) · 10 mi

Questions we get asked

Should I convert to a combi while I'm at it?

Only if hot water demand and mains flow rate genuinely support it. Large older houses with a good cylinder often do better staying as they are.

Is the CDi Classic still being supported with parts?

As a current Worcester range, yes — parts and technical support are through the standard Worcester network.