Pray don't breakdown.

Just asking them to come over can cost you an arm and a leg.

Ok, lets calculate the cost at 20yrs usage between electric storage heater and solar heater. Base on the max solar heater lifetime. (some claim at 15yrs)

Solar heater
Price range at RM5.5k.
Maintenance 4x in 20yrs - 4x900=RM3.6k
Total usage cost - RM5500 + RM3600 = RM9100

Storage heater
Price range at RM850. (68L Joven)
Usage perday boil once perday at for 60min at 3kw. 3kw x 365/12 = 91.25kwh/mth. If your bill is RM100/mth, that is 0.28 x 91.25 = RM25.55/mth
For 20yrs electric usage - RM25.55 x 12 x 20 =RM6132
Maintenance - For safety reason and lifespan, give it 10yrs to change once. So in 20yrs require 2unit. And the 2nd unit price might be up. Put it at RM850 +RM200 = RM1050
Total usage cost - RM850 + RM6132 + RM1050 = RM8032.

I will use solar heater for safety reason. Storage heater for the cost usage.

Microsolar lor.

Sometime I wonder, should earth it or not. If you earth it, the chance of strike is higher. But there is still 1/million.

68L is overkill for 1 bathroom. That is for 3 bathroom. So got to centralize the heater.

Storage heater is 24/7 hot water available. It similar to solar heater. Just the heating element is different. But are more reliable than solar heater.

Where is your "hot water for 'free'" coming from ?

You have big house?

Laying the pipe is not easy job.

I think there is something wrong with your unit.

1.5yrs is crazy short life. Doesn't makesense every 1.5yrs got to change the heater.

weikee how long the heater last ?

I don't buy their word. It still doesn't make sense.

How much is the heater cost change ?

Why you still use it when the repairing cost is expensive. Those cost yrs add up can buy a instant heater which have no problem with the heater.

This is totally a design product failure. Nobody will buy a storage heater is the heater only last that short period.

Probably this is just your case.

Not all. weikee unit been using for 7yrs now.

Why don't change the whole unit? 2nd time spoiled already have to consider hard not to continue use that crap heater anymore.

Storage heater not that expensive either.

Your neighbour heater is also same model and from developer ?

Check the model and Google see any complain on this particular model.

Developer will not choose the best model for you guy. They look for the cheapest and most basic model. You can't complain right? That is how easy to earn money.

Go and change the new storage heater la.

Add in an additional RCD beside the ON/OFF heater switch.

Why you still want to use a heater that every 1.5yrs got to repair ?

Can you let me know,

1) Is you home hot water consumption is high? You guys bath at the same time in all the bathroom ? What is the pattern of usage everyday?
2) your storage heater supply to how many bathroom ? Kitchen ? WM?
3) What is the storage heater capacity and power?
4) heater ON for 24hr ? Or when off and when on ?

You can use back the storage heater. But need a bigger capacity.

Minimum is 50l according to Joven recommended.

What I suspect your heater dryburn is because the capacity is not enough. Here is the probably scenario,

1) when the heater is new, there is not much problem with it as the water boiled fast enough. So your usage of hot water is lesser cause mix with cold water more. The draining of the hot water is slow down.

2) once the heater getting old or insulated with the mineral deposit, the water getting slow to heat up. So you have to use more hot water to mix. Consumption is high till the incoming is not fast enough to replace the out going. That is when the heater not submerge inside the water that cause it dry burn.

Normally storage heater have such a safety device built in.

1) pressure release valve to not over pressure the tank.
2) temperature cut off when reach the target temperature. Heater will off.
3) Thermal relay to avoid dry burn the heater. If the heater not submerge, heater temperature rise very fast and take alot of current. This thermal relay will cut off the heater supply when certain current range reach. Thermal relay will get hot and open the contact. No power to heater. Once the thermal relay cold down, the contact will close again.

So there is a possibility that the protect Thermal relay is not working. If the existing model don't have such function, than better change the heater.

If you want to change the storage heater,
1) change to bigger size. Minimum 50l.
2) Change the way you ON the heater. ON the heater earlier. OFF it when you take bath. Before when to sleep, ON the heater back. Just OFF it everytime you take bath. In this way, water have the time to fill back. Hot water can be keep very long in the heater. And for safety too.
3) For additional safety, install a RCD after the ON/OFF switch. Change the out going piping to non metal contact type. Poly pipe for example. (Just a short piping before the existing pipe disappear into the concrete.)

This post has been edited by ozak: May 8 2018, 01:58 PM