Yours is just an assumption.

Instant water heater won't give you real hot water bath when you need it the most (rainy day), not unless you reduce the flow rate and switch to max.

Central water heater don't need to wait 30mins if use every day even alternate days, because after the first use the tank already have balance hot water, and it have some insulation to keep the water for sometime. I have two storage in my house, one I use frequently, another only weekend, or sometime when we are in hurry not wanting to wait for the mater bathroom.  Also if the tank have no more hot water, don't need to wait 30mins before can use, depend on storage size just switch it on for 10 - 15mins and you can take bath.

Want to ask if the central one forget to turn off switch then the storage tank will boil whole day?

once it drops below a certain temp it will heat it up again just like those thermo pots

Thanks, so not to buy thermo pots already ha ha

just turn it off after use or turn it off before use if you are kiasi kena electrocuted

Yours is just an assumption.

Instant water heater won't give you real hot water bath when you need it the most (rainy day), not unless you reduce the flow rate and switch to max.

Central water heater don't need to wait 30mins if use every day even alternate days, because after the first use the tank already have balance hot water, and it have some insulation to keep the water for sometime. I have two storage in my house, one I use frequently, another only weekend, or sometime when we are in hurry not wanting to wait for the mater bathroom.  Also if the tank have no more hot water, don't need to wait 30mins before can use, depend on storage size just switch it on for 10 - 15mins and you can take bath.

It is like telling ppl that drive Honda City is bullshit . U won't enjoy wat is driving experience ....go buy BMW ... That's only considered as a car and the driving experience is wonderful ...  

So have you use both instant and storage before? Can instance get the warm water you need during morning? or raining day with the good water pressure? I use instant water heater, and storage, and still using both now. I know which type give better warm water. Nothing about Driving BMW or City is about what "Kimsim" comment earlier.

Installation for storage is much more troublesome and not cheap ...

I have some sharing experience an over instant heater vs central system.

Instant can be more quick n fast for heat up, when you going to be fast bath, but also used more electric power and noisy motor with AC pump, or either used DC pump more quietly.

When used Central system heater one, you may switch on power 30mins before heat up, but also used 2 ways piping for more costly, the advantage can be used for whole unit, even your sink or basic still got hot water.
Electric wise may slightly cut down.

The answer : want fast then go for instant type.
No rush for morning, then used  central system also more safety.

anyone use this solargold? http://www.solargold.com.my/news.aspx

Need some recommend on water heater . . 
No need build in pump. . .
Planning to install an external pump for whole house water supply . .
If possible not too expensive . .

hi folks, with regards to instant water heater installation, I don't want to have pvc or rather piping showing all the way to the water heater inlet.

Any advice how a good looking installation should be done ? Sample pictures would be awesome