If a juicer is used, then there is usually no need to add water. This is because a juicer can completely press the pears to extract the juice does not need additional water to dilute it. However, if you find that the juice from the pears is too thick or too sweet, you can add water in moderation to adjust the taste.

If you are using a blender or juicing bag to make pear juice, you may need to add water to help blend or strain the juice. This is because blenders and juicing bags can't fully press the juice out of the pears, so extra water is needed to help the juice flow.