Pro:
Can supply to several bathroom
With high water pressure (high water flow rate), the water is still warm enough.
Faulty heater element hard to replace (on ceiling). Water wet ceiling during replacement because not all water in storage can be dried up (my own experience )

Con:
More electricity if it is kept on, otherwise, the heat loss is just waste of energy during off state.
You tend to fully blast the water at high flow compares to instant water heater, thus water waste.
Normally use copper piping for hot water. How to channel to several bathrooms without major hacking?

I have both storage and instant. Storage in master bedroom because the house came with copper piping in the wall already. The heater element will corrode over time and cause power trip in the heater line. Many shops or service people told me that usually people will replace will new tank. Well, I'll stick to replacing the heater. Bought it for RM90 (if not mistaken). Was unable to replace it because location too tight to put my spanner. Just called a person that familiar and he devised his own tool to make his work easy

I only switch on when I want to use just like instant water heater. It does not take much time, probably less than 30s to start feeling the warm water. Keeping the heater on assuming like hot water pot increases electricity bill probably RM20~30. The heat retention is just not good I think.

Isit more costly to install storage type water heater coz need to reroute all de pipes right? Coz my house still empty now so if wana do it wud b dis time

Yes and no.

If only for 1 shower will be costlier. But if route to multiple outlet then may be more cost effective than multiple heaters.

Anyone using Panasonic water heater with built in pump? Is the pump noisy? I stayed at an Airbnb and they using some unknown brand water heater with built in pump, sounds quite loud.

in a dilemmas as im looking to install rain shower head and enjoy strong water flow during bath (house with 1hp pump installed)

whether to go for
1.instant water heater with rain shower head
2. concealing hot water piping and centralize storage water tank

i unsure is whether instant water heater rain shower effect will it be strong enough?

Go for storage.

Instant not mean for strong pressure.

How strong do you need it to be?
A typical pump supplies up to 3 bar of pressure

The instant water heater can handle that pressure.
If heating power is a concern, an efficient 3.6kw heater running at 80-90 percent capacity will have water that is warm enough to shower.

If he mean the instant water heater with pump have a rain shower, he will be disappoint with the pressure.

If he mean without pump instant heater with rain shower head, 3.6kw might not be enough. And that is max you can set.

Why risk to gambler on instant ?

Just straight go for storage. You get 100% satisfy result from the installation. All his requirement can be meet with got extra controllable heat.

For me, the meaning "rain shower" is not high pressure bath. But I don't think people will understand what mean of "Rain Shower".

thank you brother for the input, yes kinda fussy with kencing style bathing, even conventional shower head (which come with instant water heater) kinda disappointing though is with pump built in itself...

the current considering is due i was either go for instant water heater with pump and rain shower head OR costlier option conceal all hot water pipe and do a rain shower itself (as my house wil be install centralized pump too)

Hi i'm looking at storage heater too

The price of Joven and hydro1 actually not much difference, hydro1 claimed to be more energy saving (1.5kw) but I'm not sure. i've read the earlier discussion but i think there is no conclusion yet.

Has anyone used Hydro1 storage heater before? Is storage heater really worth investment? Installing 2 storage heater costs about 5k (include hacking, copper piping...etc). I prefer storage because less risk of electrocution (heater can be turned off during shower once water is heated)

Also, is it better to install only 1 storage heater and shared by several bathroom? or install 2 is better? The contractor told me copper piping is expensive too so suggest install 2 separate heaters

Any sifu can help?

Thanks

WTA:

Would you paying RM100 service charges for technician visit to inspect you faulty ceramic instant water heater and additional cost for change of part (if any).

Brought 2 units of SEERS instant water heater back in Aug 2014, 1 under utilise and suddenly the pump stop working and no more hot water recently.

1 which daily usage had its pump replaced in 2016, cost me RM250 for it (without RM100 service charge)

if similar replacement incurred, total RM350 expected. this make me think twice before making appointment with technician.

Not noisy compared to Joven. Bought the Panasonic water heater with pump last year.

Likely magnetic flow switch spoil. Cheap and easy fix. The part only cost rm 6-8.

Anyone know what is the reasonable labour charge to dismantle existing water heater & install a new one?

Every easy to diy if you own an impact drill or a rotary hammer

I have the impact drill but i don't have confident to drill the wall tile

Drill only. Just need to make sure there is no plumbing or electric wire behind where you drill.

If lucky, the holes will line out properly and no need drill or maybe drill 2 holes out of four.

Drill bit masonry type. Size usually is 6mm for the pvc wall plug.

Thanks for your advice, i will inspect the water heater once it arrive and compared with the existing ones.

If I just need hot water for shower in 1 bathroom, does it still make sense to go for storage water heater? Currently I'm using Joven instant water heater. I'm quite satisfied with the temperature as I don't really need very hot water for shower but I want to change to big rain shower for personal enjoyment. So far when I read in this thread seems like instant water heater is not recommended to be use big rain shower? or do you guys know any instant water heater that I can use with big shower head maybe like below type?

Big rain shower with instant hot water, you will face 2 possible problems:
1.Water pressure not strong enough, so the flow of the rain shower will be slow.
2.Water pressure strong (maybe you have household water pump), but the instant hot water can't heat up the large volume of water.