Completely agree with bernard^^^.
A combi gives a very good shower until someone else turns on a hot tap, as I can attest.
An unvented cylinder, or a vented cylinder with a shower pump does not exhibit this behaviour, and gives the advantage of immersion backup when the boiler breaks down.
Another option is to have a combi supplying hot water to a shower only, and run the rest of the hot taps off a vented cylinder.
Any of these options would give a far better shower than 7kW electric.
We've just moved into a house...
A combi gives a very good shower until someone else turns on a hot tap, as I can attest.
An unvented cylinder, or a vented cylinder with a shower pump does not exhibit this behaviour, and gives the advantage of immersion backup when the boiler breaks down.
Another option is to have a combi supplying hot water to a shower only, and run the rest of the hot taps off a vented cylinder.
Any of these options would give a far better shower than 7kW electric.