HI all,

I just bought Alpha 18i and Joven I88P water heater, both with rain shower. What is the recommended height for the rain shower to work best? Thanks

I just install Alpha smart 18i and Joven I88P on last Saturday. Both are DC Inverter pump silent series with rain showers and water supply from water tank, i.e. low pressure.
1) Joven I88P - the pump only 1 fix speed, that's why always operate maximum and noisier. Installation also take more time than Alpha. The connector at the rain shower difficult to tighten and slight water leak. Only advantage is safety wise, the built in RCD is 10mA which is more sensitive than Alpha 18i only 15mA.
2) Alpha 18i - adjustable pump speed, hence, sounds like more silent. Quality and finishing better, easier to install. Good for low pressure water supply as the outcome is better.

not strong, just like water flow down or small rain without much pressure instead of heavy rain or handshower...imagine a bit...
ya, not so suitable from water tank supply but kids love and enjoy it so much lor...so do me and my wife as no need to hold the handshower head. Alpha give better output.