Why You Need a Dehumidifier for Your Boat

Humidity is a fact of life on a boat, especially one with enclosed spaces. That humidity can damage your boat and make those areas less comfortable. 

During the winter, a dehumidifier is a must when your boat is sitting inactive for months, but you’ll also want one while you’re using your boat.

Benefits of a Dehumidifier on a Boat

Less humidity in the cabin of a boat offers more comfort, improves air quality and prevents mold and mildew. It also prevents dust mites, condensation on windows and damage to wood and metal.

Star Brite boat dehumidifier

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Types of Dehumidifiers for Boats

Desiccant dehumidifiers use a chemical to dry the air. They typically have a basket inside a bucket. The basket holds the chemical and the bucket holds accumulated water.

Starbrite no damp dehumidifier

Compressor-drive dehumidifiers work like an air conditioner. As the air is cooled, the humidity is condensed and then drains into a pan underneath. Some models can be fitted with a hose so that the pan drains continuously, which may be a good option if you don’t want to keep emptying the pan.

Thermo-electric or Peltier dehumidifiers are the most sophisticated of the bunch. This design employs a small fan that pushes air across two metals with electricity running through them. One side heats up and the other cools down, condensing the moisture and draining it into a collection pan. They’re extremely quiet, but might not be as effective for larger spaces.

If you’re using a humidifier while the boat is moving, make sure you have a way to secure and drain it. You don’t want the humidifier moving around and the condensed moisture spilling everywhere.