The air conditioner sold at Costco, Home Depot and more stores are being recalled due to possible mold exposure. Here's what to do if you own one.

The air conditioners resonated with consumers because of their unique design that allowed consumers to close their window — but which also allowed mold to accumulate.

Basic air-conditioner maintenance, such as regularly cleaning filters, can help prevent mold growth. Many window units have a light that indicates when cleaning is needed, but once or twice a month is a good rule of thumb.