It is almost impossible to empty a 25L of storage tank heated water as the outlet piping is like 3/4 of the way up on tank.
One will be able to slowly feel the premix temperature is slowly dropping after a continuous 8-10mins shower.
The bigger the tank say 35L or 45L, the continuous premix temperature is maintained longer.

My place the setting is 80°C
That's why if using heated tank, no need to bother much on water will be cold or not(keep electric bill behind on this)

All heated water system (instant, storage, solar and heat pump) has its pros and cons.
No one shoe fits all.

Instant- Easiest to install and usually for single point use, lowest cost 45C max
Storage- Easy to install and can be multipoint use, needs hot cold plumbing, best choice for condo, mid cost 70-85C max
Solar- landed properties only, needs hot cold plumbing, high initial cost but low energy bill, multipoint use 80-98C max
Heat-pump- commercial use, very low energy bill but high investment cost, multipoint use 60C max

With 20/80 of the ratio I said, it can last for 1-2 hours.
Remember, once heating element running, it will keep the water hot then warm.

Yours is a vertical mounted model?

Yes, it depends on the user as well as some like to take luke warm (33-35C) water while some like (36-39C).
The inlet water temperature also plays an important role.

Ok, Joven is 70c, maybe different brand have its own standard.

http://www.joven-electric.com/product_deta...d=1&series_id=2

Yup, in Qatar, now is winter. So the heated water will set higher at 80°C and it do cut in very fast due to water temperature are about 15°C.
The electric bill in the place I stay is about rm900 a month(1 riyal = rm1). Already tested for 2 hours and it is still warm like I replied earlier. But this type of wastage are bill killer

But already be normal, cause went back home turn on and taking bath time also within a hour.

In sg water storage tank the water really cold like ice water.

Here is mine 25L

Yours 2500watt, take longer to heat up vs mine 3000watt

Your is 35L where got different.

Not lah actually just taken without 15-20mins already feel that hot.
Already be normal, like our Aircon also turn on sleep b4 1hr.

Also my sink mixer faucet alreay adjusted the valve for water saving, according to Supersound bro said my water use like no tomorrow

Looking for a 25l wh storage tank and 2 instant heaters...
house running on centralized water pump (grundfos pm1.....though having problem lately, but developer will rectify it soon as still under warranty)

So wat model of storage tank and instant is suitable....more concern on instant heater with high pressurr running through it, will it heat fast enough? ?

Hi,

I am thinking of getting the same Rinnai Instant Water Heater with DC pump and rain shower as yours (REI-A360DP-R-WS) - http://www.rinnai.com.my/product/category/9/64

Mind to share your experience with this instant water... good? Btw, where you bought it at RM620?

Thanks.

This is my first experience getting rainshower water heater... I like it very much... You can adjust the pump power...

Glad to know you like it! Where did you bought it at RM620? The cheapest i found is RM699 and i need to buy two units (and try to save $). Thanks.

This post has been edited by clickNsnap: Mar 16 2015, 10:55 AM

You can try check with iamsobloodysick for latest price...

I70P and SL30iP, which one better? or they are the same?

how hot/warm do u want ? im using instant water heater for about 15yrs+ and i have no problems in any weather condition

u can consider SL30iP with DC inverter pump + rainshower ... RM585 @ Houses Lighting Puchong

This post has been edited by steventan85: Mar 26 2015, 11:10 AM