How To Change Filter In Frigidaire Dehumidifier. Disconnect the power cord from its electrical outlet and wait five minutes before plugging the dehumidifier back in. Use this solution to wipe down both sides of the filter, using a soft sponge or a microfiber cloth.

Rinse well and allow to dry complete before replacing. Disconnect the power cord from its electrical outlet and wait five minutes before plugging the dehumidifier back in. Once you remove the main reservoir, you will find the filter placed directly above the main water supply in a vertical position.