Yes, installing it is fairly simple. It helps if you have a little experience with plumbing, but anyone can do it if they read the directions carefully. You'll want to flush the
RO membrane for several hours before you hook up the
DI cartridge. The
RO is packed in chemicals that will deplete the
DI resin very quickly if they aren't flushed out. How often you change the filters depends on the quality of the water that's coming in to the unit. As a general guide though, plan on replacing the sediment and carbon filters every 6 months. The
RO membrane should last you a year or longer. The
DI resin will change color as it is depleted so you can tell when to change it by looking at it. The best thing to do is invest in a TDS meter. They aren't very expensive and will tell you when the
RO/
DI units performance is falling off. I would go ahead and order replacement sediment, carbon, and
DI cartridges when I ordered the unit. You can wait about the
RO membrane until you need one. I would call them and see about getting one with clear canisters though...I don't think it costs much more to upgrade.