you could get a pole for around £90 from wcw i think they called x-tel or x-cel , depending on how much water you need a 200 gpd ro unit should be fine around £180 for this , on the ro unit you have 3 filters and 2 membrains you allso have 3 diffrent coloured tubes red ,green and blue . red is for ingoing water you get a connection that self pierces on any water pipe , green is for the waste and the blue is your pure prodution , you minght allso need a booster pump depending on your pressure . a di vesel will make sure your water tds is 000ppm , i think the reason others have been sacked is that they wasnt rinsed off enough , when you do get started practice on your own & familys windows so you can see the out come then if you are getting any problems you will beable to explain on here and get advice for that , good luck for when you start mate was the best move i ever made .