combi choice WB 27cdi or 25si

[johnkk]

These 2 boilers seem very similar, except cdi is a lot heavier.
What are the advantages of each?
Thanks for any help,
John

 

[gremlin16]

Si British built

CDI German built, better boiler than i and Si

 

[Corgigrouch]

The CDi condenses in DHW mode, also the expansion vesel is on the side rather than on the back for a Si or an i which makes repairs easier also there is a provision for more comprehensive fault code output... Both are a good boiler but the CDi is better

 

[johnkk]

Thanks for the comments, John

 

[simond]

CDi every time, Junkers heat exchanger.

Virtually different product to the i series, which is UK market only.