"Christian McArdle" wrote in message
. net...

I've checked the SEBDUK database
and got the list of 50 most efficient
boilers - we'll probably select the most
suitable from that list. Can
anyone give any extra insight into particularly
suitable models?

You don't give a budget. Assuming you want
a well regarded midrange model
rather than a cheapie, the Worcester-Bosch
Greenstar Highflow 440, recently
discussed might be appropriate. It will provide
a good shower and still manage to fill a bath
before Christmas, if not at the rate of a heat bank,
unvented cylinder or pumped gravity system.

Please behave. It will deliver 20 litres per minute filing a an average bath
in less than 5 minutes. Most people don't care of a bath fill at 5 or 2
minutes. They really couldn't care.

It uses a small internal heat store to give enough reasonable flow to
mostly
fill your bath (depending on size) before cutting back to 11 litres a
minute, which it can maintain indefinately. 11 lpm at mains pressure is
enough for a decent power shower, but not a wide bore low pressure
drencher
type, or a panel type with body jets.

If you prefer a high flow instantaneous combi
(probably more appropriate for
a drencher shower), then there Bosch-Worcester
have Greenstar versions up to 40kW.

Giving 16 litres.min. With cold added probably about 20 litres min, but for
ever.