If you frequently use a humidifier or dehumidifier at home or work, there will come a time when you need to replace a part. Here's where you start. Get a new filter, replacement pad, humidistat, fan blade, motor and much more when you need to get your humidifier or dehumidifier running at full steam. Dry or moist, for everyday or emergency use, these environmental powerhouses are a great way to control your air quality. In the market for an entirely new unit? Browse our selection of humidifiers and dehumidifiers.