If your refrigerator dispenses water, chances are it uses a water filter. And if it’s been a long time since you’ve replaced it, the inside of it may be clogged with some of the gunk. Changing your refrigerator water filter is the kind of routine maintenance that can be easily be ignored, but just like the oil in your car, it’s important to keep a regular schedule. Most manufacturer guidelines recommend that you replace your water filters every six months. Of course, these guidelines are just for broad situations – rather than your specific situation. If your family uses a heavier than average amount of water, your filter could expire…