To my surprise I couldn't find options to install a storage water heater that can centrally provide heated water to all bathroom

I went to HomePro, Harvey Norman all selling those instant water heater.

I don't want to use those cos need to hack bathroom, pull wiring, ugly and comes with electrical hazard. I want to use back original shower head

Those tank one I see a lot of benefit however I have lots of questions

1. Can my existing PPR pipe allow the installation? Hot water temperature usually range from 55 Deg C to 60 Deg C only. PPR can withstand temperature up to 90 Deg C, it should not be an issue. https://www.binaplast.com/catalog/modified-...ride-m-pvc-pipe.

2. Do I install one in each bathroom above the ceiling or can install one at the incoming main?
Advisable to install at each bathroom. You wouldn't want to be caught in the scenario when 1 equipment faulty, all 3 bathrooms are without hot water.

3. Where to shop for this?

I think the common used in industry is Elton brand . https://www.waterheater.com.my/elton-storag...FIaAgVnEALw_wcB


In Singapore this seems to be common. Got option to go with slim design to hide it