We bought the Pure Drop 5 Stage Reverse Osmosis Filter mainly because of the price and the dual O-rings on the three main filter housings. Having read many reviews of other similarly priced reverse osmosis units and many water leaks from individual o-rings, this was not a problem. Installation took a while, but is relatively easy if you follow the instructions. The man drilled a hole in an existing drain and installed the included nozzle, I did the rest. We don't use a capacity of about 50 gallons a day, so we change our filters annually instead of every 6 months. Changing the filter was also easy. After a year or so we can feel the difference in the water and know it's time to change our filters. Considering we just ordered a large replacement filter kit for $90 and have 4 more years of use, it costs us $22.50 each after the initial investment. year for better tasting, environmentally friendly water. You can't buy bottled water at this price, and no more plastic waste. We love this device so much that we are recommending it to our friends and planning to buy it for my parents for Christmas.
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