Installs like any other filter. After a few months, the water tastes great and looks great. Every few months our municipal water company adds chlorine (chloranine?) to the water. The water will have a specific smell within a week. I bought these activated carbon filters to help with that. They seem to reduce the strength of the smell but I still notice it. The filter in my fridge now completely removes the smell. So they're not perfect, but they're an improvement. As with any filter, lifespan is highly dependent on usage and the level of contamination of the incoming water. We have city water that is already heavily filtered so I assume this filter will last a while with no problems. If I had good water I wouldn't expect them to last as long.
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