kenmore RO.. anyone use? good bad?

I have the chance to get a kenmore RO unit an ultra filter 550 for $100.00 . if anyone has used kenmore RO units or know anyhing about them I would greaty appreciate any info. I dont want to get one that is just going to be more trouble than it is worth. here is a link to the manual:

http://disruptit.com/manualgateway.cfm?pdfwanting=14545&username=anon&AV=123345&I=97.86.17.10

please let me know what u think. I really would like to know since i would have to get this thing tomorrow. thanks again!

BD

anyone. i know there are some ro users out there. have you even heard anything about them? do all filters generally last the same ampunt of time or is some better than others?

the amount of life depends on how funky the water going in is.
the lifespan on a ro membrane with a series of pre/micron filters should be several years of low tds water IF the prefilters are changed regularly. if not who knows. i was getting 18 tds after 2 years of no filter changes and a tap reading of 75 tds. like i said your mileage will vary.

that unit will be fine ad 100 is a helluva deal. i payed over 300 for the one i use for my reef aquariums -7 stages ro/di

Rysam said:

the amount of life depends on how funky the water going in is.
the lifespan on a ro membrane with a series of pre/micron filters should be several years of low tds water IF the prefilters are changed regularly. if not who knows. i was getting 18 tds after 2 years of no filter changes and a tap reading of 75 tds. like i said your mileage will vary.

that unit will be fine ad 100 is a helluva deal. i payed over 300 for the one i use for my reef aquariums -7 stages ro/di

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sweet. thanks for breaking the ice on the baords with that good tid bit of info.. welcome

Be prepared to waste a shitload of water when using the filter. typically the rejection rate on the membrane is 4:1 so basically for every gallon of water forced through the membrane 4 more dont make it and go down the drain. It really doesnt affect your bill much though, maybe 5 or 6 bucks a month tops, even if you make as much water as i do(easily 300-400 gal month). it just is hell if you have a septic system. run it to your veggie garden if you can.
the amount of water you can make also depends on the GPD rating of the membrane. I have a 75GPD filter so i can make 75 gallons of 0 TDS water per 24hr period. they vary but for this need i would imagine any GPD rating would be ok.