Thanks. Do you believe when I buy water heater + installation from shops like Sen Heng, Onking etc, the technicians should be trustworthy to handle this?

This post has been edited by lowlowc: May 24 2018, 10:15 PM

i don't know.

i basically trust no one. i either do it myself or i'll supervise closely whoever that's doing it personally.

your life and someone else's life depends on it.

if you want crappy installation, the crappiest installation i can think of will be take power from light switch in which light uses 1.5mm square wire or smaller, no earth wire, some how some idiot connect the light wire to a 32 amp mcb and the mcb connected to an old school elcb with 300mili amp leakage trip that no longer works even if press test button. and connect the water heater with a conductive shower hose. yup.........sure way to get electricuted and burn down the house in the process.

This post has been edited by slimey: May 24 2018, 10:29 PM

Hydro1 have 30L, 50L and 80L. Check at the Specification.

Base on the Eco30 L, 36min - 44°. If reach to 70° will take - 70/44x36= 57min.

Base on Eco50L, 45min - 44°. If reach to 70° will take - 70/44x45= 71min.

Base on the Joven JH35L, 60min - 70°.

Base on the Joven JH50L, 90min - 70°.

Too bad I don't have electrical knowledge to supervise the job.
That's what worries me - using the light switch to connect. I think the next nearest switch will be opposite the bathroom door, which is the switch I use for my washing machine.

Distribution board is meters away and have to go past 2 doors which means a lot of wall hacking.

This post has been edited by lowlowc: May 25 2018, 11:39 AM

So, I think Hydro1 is “better” since it’s a 1.5kW heating element?

Try la. no worry.

Later let us know here.

I don't see any good point of 1.5kw element. It is just lower power element. While Joven have 3kw and 1.5kw element.

In term of save, 50L have more advantage. Another is, it can adjust the temperature you want.

But for me, it is useless as the storage heater will be hide inside ceiling. If many people using, you have to set it max to reduce the hot water usage ratio.

The only point worry is, how long the heating element can last. And what is the cost to replace. This might turn you off.

Recently used a water heater in a hotel and it was very noisy during operation. I guess it must have come with a pump. Do pump-based water heaters sound noisy during operation?

I just installed 2 Panasonic water heaters (non-pump). Very quiet during operation. Though the water that comes out from the Panasonic is not very hot, just warm. Unlike the water heater in the hotel, when the temperature knob is only halfway, the water is already very hot and I have to turn it down a little. Personally I prefer the Panasonic water heater whereby the water is not too hot as you won't risk burning your skin during shower. Though for those who like to take a hot shower (hotter than warm), I'm not sure if the Panasonic water heater will deliver.

I was told by the electrician who installed the water heaters that most the water that comes out from modern water heater these days is just warm and not very hot.

This post has been edited by ryder_78: May 25 2018, 10:47 PM

The "crappy" installation that you cited, good imagination. Though in real life we rarely hear about buildings particularly apartments or condominiums being burnt down because of a wrongly-installed water heater. Most units in apartments would have water heaters installed, and I don't think I have read about any building being burnt down because of poor installation of water heaters. For burnt-down buildings, I believe a fire arson or flying jets crashing into buildings (just like the World Trade Centre) would stand a higher chance of getting the whole building on fire.

In summary, the message I am conveying here is it's not that difficult to find a competent electrician. Of course, one can choose not to trust the electrician since you wont' know his background (unless you scrutinize his credentials for certification) but in reality, most experienced or competent electricians would do fine. Otherwise, we would hear buildings being burnt down in the news every day of the week due to poorly installed water heaters.

This post has been edited by ryder_78: May 25 2018, 10:42 PM

Yes, good imagination.

But in real life, I’ve seen a lot of stuff that makes me wary of things.

I suggest you google the leading causes of residential fires in Malaysia.

I would guess either from cooking or an electrical fault and the victims are usually the very old or the very young.

These are the people we need to protect and it's a pity if ignorance is the excuse if we fail.

These things don't need to google. Electrical or gas cookers fault related to cooking is mainly with worn-out wires and fittings or misuse. It's not related to improper installation of new water heaters.

Going to get a instant water heater, any suggestion which is safer

Wouldn't it be better to have the storage water heater visible and easily accessible to adjust the thermostat, view the temp/pressure gauges and periodically test the pressure relieve valve?

In the same bathroom but high level..

Imagine have a tong gas size at the corner of the bathroom. That is the 40-50L size of a storage heater. With the piping and wiring, it is an eye sore in your bathroom. If with a small bathroom, it look crush in there.

Storage heater have to install height above. Who want to climb ladder adjust the knob everytime ? It is not same as instant heater height level. You going to knock your head with that tong gas size heater in the bathroom.

You can mix the water at the tap to get the right temperature you want. It is not same function as instant heater. There is no logic to adjust the temp...before use ?

It is not necessary to install a pressure gauge for the incoming water. I believe the tank can stand well above the normal house water pressure.

The pressure relieve valve don't have the gauge reading. It is just a spring load valve mechanism. You can test it once a yrs by pulling the shaft ring. So not necessary to be eye visible the storage heater. There is nothing to see at all.

The issue is more towards ease of maintenance rather than aesthetics. The thermostat is only to adjust an acceptable hot water temperature at the outlet once installed so as not to be scalding hot.

A high level located in a corner maybe near the WC and there's the drain pipe should the need to flush out the tank.The tank can no doubt withstand reasonable pressure still to visibly see a temperature/pressure indicator at normal is more peace of mind.

A water storage heater should not be treated like a water tank where an out of sight out of mind mentality prevails over safety/maintenance.

Still I would think a tankless water heater is preferable even if the water temperature/volume is less.

just went to SEC and Wah Lee yesterday to look for Joven water heater. Was told Joven is no longer reliable now so hardly find in most electrical shop. Is that true? The salesman ask me takes Panasonic or Alpha, but i resistant as i know Joven is the most reliable...

Salesman ofc will recommend their own stock...If they have Joven, they will sell you ofc.
So, try go a few more shop and search for it. I installed Joven and Midea atm...So far so good

do u guys recommend wall mounter instant water heater or storage type water heater? what are the pros & cons?

The only benefit of storage water heater is that you can route the output to multiple tap and shower from 1 storage heater.

If only just for shower, might as well use instant water heater. Because it is instant.

There are other benefit, strong water pressure, and real warm (till hot) water during rainy season.