Charcoal filters, also known as activated charcoal, are created when the pores of charcoal are activated with oxygen, thereby opening and creating an absorbent material. Charcoal filters are used in a variety of appliances, such as refrigerators and air filters, as well for as water purification purposes. While a charcoal filter should already be activated when purchased, reactivating the filter is possible to clean and extend the life of the filter.

Charcoal is a common element in creating filters for home appliances

Step 1

Remove the filter from the appliance and wash the filter either in the dishwasher or with warm water and a few drops of dish washing liquid. Rinse the filter well.

Step 2

Turn on the oven to approximately 200 degrees Fahrenheit and allow the oven to preheat.

Step 3

Place the filter in the oven on an oven pan. Close the oven door and leave the filter in the oven for about 10 minutes.

Step 4

Remove the charcoal filter from the oven using protective oven pads and allow to cool before touching. When the filter is cool, replace the filter in the appliance.

Step 5

Repeat approximately every two months or when the filter seems excessively dirty or is not functioning properly.