What kind of lightning risk for solar heaters? You mean risk of lightning hitting the solar panel?

Nowadays new houses don't use copper piping anymore for cold water supply. I think in Klang Valley now the standard pipe is ABS type.

I also agree that in the case of link houses it's unlikely that the developer will supply hot water piping (unless they include a solar hot water system). The usual is just to provide a water heater point and the normal cold water pipe to the shower.

This post has been edited by jchong: Oct 23 2013, 11:16 PM

a standard showerhead uses about 15 to 25 litres of water per minute - a three star rated water efficient showerhead uses as little as 6 or 7 litres per minute.

a standard showerhead uses at least 120 litres of water per eight-minute shower whereas a water efficient model uses less than 72 litres or 40 per cent less water

Source: http://www.waterrating.gov.au/consumers/water-efficiency


To be considered water efficient the max output is limited to 9 litres/min. Of course if super efficient can be lower to 6-7 litres/min. However, personally I think the showering feel of these efficient showerheads will be less nice.

This post has been edited by jchong: Oct 24 2013, 12:24 PM

The main solar unit itself is reasonable.

It's the piping (incl hacking of walls, repair after hacking and relaying the tiles) which adds to the expense. Can be a few thousand RM for 3 bathrooms. Not to mention the inconvenience.

So you are using tank type?

For solar heater, the returns will come in the long term through reduction in electricity cost.