The type of filter you need to buy for your refrigerator depends on the amount of water your refrigerator uses and the contaminants that are in it. There are three types of filters: activated carbon, reverse osmosis, and ultraviolet light.

The first thing you need to do is evaluate your needs. Do you live in an area with well water or do you have a water filtration system installed? If you have well water, you will need to factor in the cost of a water filter and whether or not it is worth upgrading to a more expensive model. If you live in an area with municipal water, then a water filter may not be necessary. You can also take advice from professionals via

The next thing to consider is the size of your refrigerator. Most water filters fit on standard kitchen cabinets. However, if your refrigerator is too large or too deep for a water filter to fit, you may need to look at models that are designed for refrigerators.

The type of water filter you choose also depends on the type of water your refrigerator uses.UREFs (Under-Sink Water Filters) are made for use with municipal water and are generally more affordable than reverse osmosis systems. RO (Reverse Osmosis) filters are the most expensive but can be used with well or tap water as well as municipal water.