There may be some clues around your home to suggest problems with damp air. Here are some of the signs that your home may benefit from a dehumidifier:
Your windows often have condensation.
There are signs of mold on your ceilings and walls.
There is a musty odor in your home.
You have wooden window sills that are soft and/or rotting.
There are water stains on the walls.
Clothes smell damp even if they’re freshly washed.
You, or members of your family, have persistent respiratory illnesses.
Someone in your home has a dust mite allergy.
There are unwanted pests in your home, such as cockroaches, moths, or silverfish.