Answer Question
Yes, even if you have a second shut off valve on water pipe near the fridge water filter, it's probably a good idea to always shut off the main water supply when changing a fridge water filter.
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While trying to remove the water filter in refrigerator, the cap that you twist, came off & won't go back on. Ideas on how to get it
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Do you have to turn water off to change water filter in a fridge?
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Do you have to turn off the water to change a direct line water filter?