zean,i bought the pump from u for my double storey house and the sound is quite noticeable.i can heard the noise even i was standing beside the staircase at groundfloor...

shall i look for grundfos or u can help me on this?

i'll get up to the ceiling and have a look.thanks for ur prompt reply bro.

btw,my in law is looking for a pump for her 2 storey house,it has 4 bathroom without rain shower.any recommendation?price?

thank you so much zean,pls pm me the pump for my in law.