I recently replaced a 20 year old reverse osmosis system with a new Watts system that I purchased from Costco a few years ago. I like the convenience of being able to swap out the filter cartridges without disassembling the entire system like the old system did. My only complaint about this system, and the reason I didn't give it five stars, is that it's noisy: if you pour in some reverse osmosis water, the system gurgles for about an hour as it fills the pressure tank. I called the company about this and they told me to change the filters. I did it and it's still gurgling from the bypass water going into the drain line.
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