replaced a 15 year old basic 4 stage watts under the counter unit no pump. if you use quite a bit of water like an under counter ice maker or a large family get the rcc100p unit with the pressure pump…it filled my existing tank which holds approx 3.5 gals in under an hour….and the pump makes the water more pure. my TDS is 2….yes that’s right. but my tap water is only 40 PPM…appears well made. you can’t hear it run the pump is very quiet. even if you have decent water pressure the pump will still come on when you use water. here’s to hoping it lasts many years. i have been an RO user since 93….i had a custom unit in las vegas…i can’t imagine living with out one. buy it…enjoy it…oh and your coffee maker will last forever…without cleaning. i don’t work for i spring and i paid full price…..just so ya know.Read full review
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