On 03/03/2021 14:47, The Natural Philosopher wrote:
On 03/03/2021 14:39, NY wrote:
Our previous house had a cylinder (so the same time-to-reheat problem)
but at least it was mains-fed.

I have no ideas how long it takes to get my 150l tank back up to
temperature. I occasionally see the boiler fire up to do it in summer -
for maybe half an hour tops.

I do know that there is always enough hot water at 60C and 2 bar
pressure for any shower or bath




A cheapo 24kW combi is perfectly adequate for one person and
more suited to smaller houses, provided the mains water can
supply sufficient pressure and flow.