How Many Power Showers in a New Build is Allowed?

[DPG]

I'd prefer at least a couple that are either from a combi or a pump. Better shower experience and less risk of big cables and overheating isolators etc.

 

[UNG]

Given that Passivhaus is generally about energy efficiency I don't see how 5 10.8Kw showers will fit into that brief unless you have a rather large PV setup with a battery to match

 

[James]

Given that Passivhaus is generally about energy efficiency I don't see how 5 10.8Kw showers will fit into that brief unless you have a rather large PV setup with a battery to match

Give or take a little bit of losses, 5 showers for 5 people uses the same power regardless of wether it is 5 separate showers used simultaneously or one shower used for 5 times as long.

The only way to increase efficiency is to put 2 people in the same shower at the same time.

 

[UNG]

Give or take a little bit of losses, 5 showers for 5 people uses the same power regardless of wether it is 5 separate showers used simultaneously or one shower used for 5 times as long.

The only way to increase efficiency is to put 2 people in the same shower at the same time.

I agree with what you are saying
But you are totally missing the point regarding Passivhaus design and energy efficiency, while the Passivhaus classic has been around for a while there is now also the Passivhaus Plus and Premium which push further energy efficiencies into the design with the top level premium building having to produce far more energy than it consumes as shown on one of the Grand Designs programmes last year

 

[baldelectrician]

If I were building such a house I would be instaling as much PV as I could and then dumping the excess in to water heating / battery storage.