Bathroom Dehumidifier vs. Exhaust Fan

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By Steven Hal

Bathrooms are often susceptible to excess moisture, leading to unpleasant conditions such as mold, mildew, and musty odors. To combat this issue, many people use either a bathroom dehumidifier or an exhaust fan. Both devices serve the purpose of removing moisture from the air, but they operate on different principles and offer distinct advantages. In this article, we will compare bathroom dehumidifiers and exhaust fans, analyzing their benefits and drawbacks to help you decide which one is the better fit for your needs.

Bathroom Dehumidifiers:


A bathroom dehumidifier is an electrical appliance that efficiently removes moisture from the air. The device draws in moist air, cools it down, and then extracts water droplets from it. The now-dried air is released back into the room. Bathroom dehumidifiers are highly effective at reducing humidity levels, preventing mold and mildew growth, and improving the overall air quality in the bathroom. They come in various sizes, some of which are whisper-quiet, and can be equipped with features like humidistats for automatic humidity control. While they require an electrical outlet and a tank for collecting water, they prove to be a valuable investment for persistent humidity issues in the bathroom.

Pros of Bathroom Dehumidifiers:

  • Effectively reduce humidity levels and prevent mold growth.
  • Improve bathroom air quality, benefiting overall health.
  • Help prevent accidents due to moisture condensation on floors.
  • Offer a range of sizes and some models are whisper-quiet.
  • Can be equipped with humidistats for automatic humidity control.

Cons of Bathroom Dehumidifiers:

  • Require electrical outlets, presenting potential electrocution risks.
  • The presence of cords can be a tripping hazard.
  • The need to empty the water tank regularly.

Bathroom Exhaust Fans:


Bathroom exhaust fans, on the other hand, work by forcibly expelling moist air from the bathroom to the outside. They quickly remove humidity, odors, and heat, making them ideal for bathrooms with short-term humidity issues, like those arising from showering. The fans do not collect water, but rather redirect the moisture-filled air outdoors, which can be beneficial in preventing mold and mildew. Exhaust fans are available in various types, including window and ceiling fans. While window fans may allow insects to enter and ceiling fan installation can be complicated and expensive, these drawbacks are often outweighed by the benefits of quick humidity removal and space-saving design.

Pros of Bathroom Exhaust Fans:

  • Rapidly remove moisture, odors, and heat from the bathroom.
  • Do not take up space in the bathroom.
  • Window fans are cost-effective and easy to install.

Cons of Bathroom Exhaust Fans:

  • Bring unconditioned outside air into the home.
  • Ceiling fan installation can be complicated and expensive.
  • Window fans may not provide efficient humidity control.

Choosing the Right Option:


To determine which option is best for you, consider the specific humidity conditions in your bathroom. If you have persistent humidity issues, a bathroom dehumidifier with its precise humidity control and mold prevention may be the better choice. On the other hand, if your bathroom experiences only short-term humidity during and after showers, an exhaust fan can quickly remove excess moisture.

Ultimately, both bathroom dehumidifiers and exhaust fans have their advantages and are useful in different scenarios. It’s essential to assess your bathroom’s unique needs, budget, and available space before making a decision. Whichever option you choose, ensuring proper humidity management will contribute to a fresh, dry, and comfortable bathroom environment.

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