In article ,
Triffid wrote:
Maybe if you don't have a bath.

Our WB 30CDi has a flow-rate of 13.1 litres per minute at 35 deg.
temperature rise. It only takes a little longer to fill the bath than
our old conventional system did (and you can keep 'topping up' with hot
water all night long if you wish - no need to wait for the tank to heat
up again.

It depends on many variables. There are header tank systems around with
not enough head - but round here the mains flow rate is poorer than some.

I can't see why you'd want to top up a bath anyway if it's filled with the
temperature you want to start with. But even if you did, any decent
storage system should be able to. With a fast recovery cylinder your
boiler can heat the water nearly as fast as a combi does.

Basically, no instant water heating system can cope with the possible
*peak* load/flow in the average house. A storage system can.

--
*Virtual reality is its own reward*

Dave Plowman London SW
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