I bought an EZ-4 with a premium filter. Installation was pretty easy and straightforward. The only issue we had was that the thread on the cold water shutoff valve was not long enough for the nut on the supply valve that came with the kit. This resulted in a leak as the rubber washer was not properly seated due to the gap. A few more rubber washers from Home Depot fixed the problem nicely, no leaks. The water tastes great and I am very satisfied with this system. Installation only took a few hours, including a trip to Home Depot. I highly recommend this product to anyone looking for a great, affordable water filtration system. BTW, in case anyone else sees the coin-sized battery in the kit that comes with the side of the faucet, this is to remind them to change the filter. I couldn't find what it was for in the instructions or on the box. I found a product review video that briefly said it was a reminder to change the filter. I suspect that after 6 months the light on the front of the faucet will come on or flash. So we'll probably wait and see.
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