Thanks for reply. I am comparing the solar water heater vs normal water heater. As they said, water heater tends to use more electricity. Some people don't recommend to setup one solar because of the cost and not worth it.

I don't know washing machine can be connect together into solar system? In that case, then can setup a green energy efficient electricity system to save some $$ for long term. But I am worry the cost to setup is more than the saving 

Saving electricity in Malaysia does nothing to make the Earth greener. We have more electricity than we can use, and the unused ones just discharge off like that.

It does, however, save us from the higher TNB bills.

(This in no way supports/denies the savings that you get in term of electricity bills versus the high setup cost of the solar water heater)

Micro Solar having promotion end this month. I am making my booking next week.

M60VTHE RM 4k+

Microsolar given promotion for at RM4490 without Pump or Rain Shower.
I dun need pump for my house as the incoming are at 50psi. (3.5 bar)

Yes

Not mandatory, is for time when you get minimal sun light or rainy season. Get micro solar will be very efficient.

Lastest promotion

Just got my solar water heater tank replaced yesterday. (Under warranty)
In the morning the water was lukewarm. 
Suspect it was because of insulation in the tank.

As for heater efficiency.
From a lukewarm water in the morning , the water become very hot in at 1.30pm.

Water still usable although not as hot as when there was sunny days. No heater was switched on.

If using 3kw heating element should be one hour.

Pricing? Must visit your shop to get the quotation? It is a bit far to me as I'm staying in kajang. will you recommend any contractor to do the copper piping? I've been quoted for more than 1.5 k for each bath room. The price shocks me..

The all in cost for each point (for each toilet/bathroom). Should be the all in cost such as copper pipe, wall/floor hacking and tiling works.

SO You think this is very expensive? I  thought each point is like 500 yo 800..

sorento so bad??

Haha, and blow away

And best part, one of the mixer is only use in the weekend...

I am just sharing some experience: I have been using the SolarPower solar tube that I have bought from Builders Hardware. Used it for about 2 to 3 months now and so far so good no complains yet. It has been raining a fair amount these days and yet still getting very good amount of hot water. But this reminds me I have not tested the electric heater yet as every day I get hot water even thou its cloudy. My house have 4 people staying in and most of the time all of us come back at night for showers. My whole house have 1 porch pipe, 3 shower, 3 sinks, 1 kitchen sink and 1 backyard pipe all connected with hot water from the solar tube system using copper pipes. So far been using it in my kitchen and backyard most extensively to wash plates and mops. So far using JohnsonSuise and Sorento mixer for shower and sinks.

As for copper pipes its actually not that expensive only the workers salary is very high to put everything together. I happen to have extensive normal pipe service/replacement so I added all copper pipes with no extra salary charge just buying the copper pipes from the hardware shop.

ozak : It does takes a little bit of time to come out as the pipes are longer from the roof till your ground floor. Less then 2 seconds more or less depending on the amount of water coming out.

2 sec is fast for ground floor. My first floor shower  got water need about 5 sec.

For shower, yeah quiet wasteful 5 sec is lots of water. Ususally I have another small tong fill up the cold water and use it for other things. Lucky i don't use much hot water only morning. Mine pressure not sure, standard grundfos pump without adjustment.

Also make me wonder why house owner need hot water water pipe for sink and backyard. Our country so cold meh?