Firstly I live in Ireland and personally my wife and I will not drink tap water, which means lots of bottled water and the expense of doing so really adds up, We know just how bad the water quality is because we had it tested, OMG really bad. We decided to go for the reverse osmosis system, Now I'm not a plumber but you get all the information required including video help and it's really not complicated as I would not have attempted installing this myself, I even bought the PPM meter to check the water quality before and after.....WOW what a difference even to bottled water and I really mean massive, Yes like any water filter system you will need to change filters but my god is it worth it. Is it really worth it? would I buy it again? and from this company? YES, YES, YES.