...that is the question. It's a replacement system in a smallish black&white that is being upgraded to the latest insulation specs etc. Floor area approx. 120sq m in total (ie 60 sqm per floor). One family bathroom and two en-suites proposed.

If I went for a larger oil-fired boiler should it cope with the demands ? Just exactly what does happen if say, someone was running the bath at the same time as someone else taking a shower and someone else was filling the kitchen sink?

Well...there's only me and the missus and we both prefer showers so it would probably do for us but I'm not sure what the 'man on the Clapham omnibus thinks' especially when it comes to reselling the property.

thescruff wrote on Jul 2^nd, 2007, 8:55pm:


I like the idea having had the idea of a ground source heat pump whacked on the head when I realised how large an area of the garden needed to be dug up....

But aren't the air source units noisy?  

Scruff hi

I'm having a new CH system put in my new extension and want a unvented cylinder for a 4 bed two shower 1 bath house would a 180 cylinder be adequate ?
Also do you have any comments on Vallient ecotec 630 , Viesmann vitodens 200 or would you recommend a Buderus 600??

Every plumber offers a different make saying something derogatary about the last make.

Also I'm struggling where to put my flue terminal , my original spot on the gable end which is about 500mm above and 250mm away from my neighbours hip roof has been questioned. Would  building control give a suitable spot or  could I fit a verticle flue with a spinning disperser?

Any assitance would be very much appreciated.

Ta