Originally Posted by jamal-188
Ehat do you look for in a RO
unit? I know they have several different stage units, what are the differences?
The first thing to look for in a RO
unit is the GPD rating. These units will produce an approx amount of water and its measured in Gallons Per Day. So a 50GPD unit will output approx 50 gal
water per day. A 100GPD unit will have roughtly 2X the output of a 50GPD unit. Depending on how you set it up you might be able to get by with a 25GPD unit or you migt need the increased output of a 75GPD unit.
The second thing to look for is the number of stages. In theory the more stages you have the higher the water quality will be on the filtered end of the unit. The number of stages is nt the only factor when it comes to water quality though. The other factor is what is within these stages. For example a 3 stage filter could produce as good of water as a 5 stage filter if the 5 stage filter has lower quality filter cartrages or has cartrages with higher micron filter size.
Other things to look for would be if the RO
unit has a TDS
meeter or a pressure guage or how the RO
unit attaches to your home water system.