QUOTE(zero721 @ Dec 11 2015, 12:27 AM)
I know the pros is it filter more compared to sand type. But cons, so far only heard that it might cause the water pressure become slower. What else pros and cons? Can tell?
From what i know the cons of membrane filter,
1) Reduce water pressure
2) Gets clogged very fast as it is unnecessary too CLEAN 0.01 micron. An Amway Espring drinking filter is only 0.2 miron, Aquaphor Eco is 0.1 micron, why outdoor filter 0.01 micron?
3) As it is too clean, will collect more dirt and hence u need to backwash very often, usually they will ask u to install an automatic flushing timer to flush everyday.
4) Membrane maintenance cost is higher and from what i was told can only tahan 2 years (RM 700+) while most seller say 3 - 5 years.
5) Membrane can only tahan averagely 3 bar of pressure, most catalogs will write 6 to 8 bar but if u read or ask them in details, the casing can withstand 6 to 8 bar pressure but not the membrane.