I wonder can we generate some power from this hot water when we don't need it. To we need it. Electric.

I hear someone bringing out their DIY toolbox

But but solar heater don't content solar cell. It only have pipe and reflective bed or evacuate pipe.

So your brother is using solar panel to generate electric or solar heater?

Look like good price. Can consider.

Price include installation?

does anyone know if someone selling sollar that I can pay via installment?

Even saw his solar heater high up in 1 of the hut in KK mountain. But my friend still come to my hut side to take a hot water bath which is normal electric heater. 

Actually, how far does the hot pipe run to each bathroom and how many bathroom in total.

if your home's hot pipe is 1" thick, Microsolar's manual does warn of accelerated thermal decay vs 0.5". For such situations, change the exposed section to 0.5" and insulate.

No don't mix with cold again.

Actually does newly built houses from developers come with two piping system (cold + hot)?

safer get 300L, many solar claim better heating, temperature upto 90 degree bla bla bla, tested in bathroom it is impossible to get 90. So, they will say, no no cant measure in bathroom, we nd to measure directly in the solar, ok fine, but cant be solar 90 degree but comes down to bathroom only get 60 degree or 70 degree.

So, if a solar company claims they can do 90 degree celcius, hence u use less hot water, so u no need a big tank, ask them pls write black and white on the receipt, if cant achieve 90 degree demand full refund

To share, i used both evaquated tubes and flat panel, both +- max heat, dont feel a big difference. What i can honestly tell u and accurately inform is that my flat panel aquasolar can achieve a max of 68 degree celcius, measure in my top floor bathroom (max hot) 68 degree is already smoking hot, if really a solar can go upto 90 degree in bathroom, u might accidentally get scalding, imagine pouring boiling water on yourself

Comfortable shower temperature ard 38 - 42 degree +- so with 68degree, mix cold water, u get a nice shower
Bigger Better as u STORE more HOT WATER, in case rainy season.