On 23/10/2020 16:14, Dave Plowman (News) wrote:
In article direct.com,
mafj wrote:
Recent research that in UK households with combis kitchen water use is 2.5 higher than other systems. (18L vs 7.2L per person per day).
And the most likely reason pointed out is time for HW to arrive).

So secondary loop of any sort would seem to help alleviate this waste.

Not sure circulating water within a potable supply is either allowed or a
good idea. And just when were we short of water in the UK?


More expensive combis have a setting that keeps firing the
burners occasionally to keep the primary circuit hot. This allows
faster hot water performance but uses more gas.