isar HE-24 man enough for another rad and a shower?

[adamjth]

Hi,

So I know I could go and research the prod. literature, Bhus etc but I would like some opinions on this:- we currently have a isar HE-24 boiler that supplies 3 rads downstairs, 4 rads upstairs and a shower/bath in a regular semi-detached with the combi in the kitchen downstairs. It was installed before we moved in 7yrs ago and apart from an early incident with a PCB failure seems (6 years ago) to be working fine. Anyway time has come that we are considering a extension in the loft which would add another rad and ensuite shower to the load on the HE-24. So I am wondering if this boiler is man enough for the task or if we should go ahead with the extension with the view that it might need to be replaced with a more powerful model(aka suck it and see). Obviously I know there would be a limitation on the shower(s) not be used at the same time

cheers

Adam

 

[St0rmer66]

Radiator definitely (and many more besides that, 24Kw is a lot for heating) but not so much another shower. Definitely wouldn't be able to run them both at once, but then almost all combi boilers are the same.