Negative Positive
Title: Easy installation
Review: Easy to install, replacement cartridges are $33 every six months, so I also installed drains and isolation valves to maintain annually, "MAINTAIN YOUR WATER HEATERMinerals occuring from hard water will adhere to the sides of copper pipe, gradually choking the water path and eventually interfering with the normal operation of your water heating and cooling appliances-leading to a subsequent increase in energy costs."
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