Guide to Boat Dehumidifiers

For almost all boat owners, having to maintain their boat to ensure that there are no water leaks in any of its parts is already a difficult task. However, that is not the only dilemma that they usually face when it comes to boat maintenance, as they would also have to check for the moisture on their boat to prevent parts from being damaged from molds or corrosion.

Boats typically struggle with moisture and humidity during hotter seasons, since the warm temperature often produces more moisture in the air, thus leading to too much humidity in the area. Maintaining the boat at the right moisture level can be pretty challenging because it is always on water. But there are several items that you can place or use on the boat to keep the humidity in check, one of which is the boat dehumidifier.

Boat humidifiers can come in different sizes, and all of them provide different levels of moisture control for your boat. To have a better idea of what dehumidifier to buy for your boat, here are a few of the best dehumidifying products or items.

Where to Buy
Boat Dehumidifier Moisture Absorber and Charcoal Deodorizer Remove Damp Musty Mold Smell | Basement Closet Home RV or Boating
4 Pack Boat Dehumidifier Moisture Absorber Hanging Bags and Charcoal Deodorizer Remove Damp Musty Mold Smell | Basement Closet Home RV or Boating
Star Brite No Damp Dehumidifier & Moisture Absorber
Caframo Limited 9406CAABX Stor-Dry 9406 Dehumidifier, Warm Air Circulator Fan, Small, Metallic
Pro Breeze Electric Mini Dehumidifier, 1200 Cubic Feet (150 sq ft), Compact and Portable for High Humidity in Home, Kitchen, Bedroom, Bathroom, Basement, Caravan, Office, RV, Garage with Auto Shut Off
Eva-dry E-500 High Capacity Renewable Wireless Mini Dehumidifier - 4 Pack - Fight dampness in boats, safes, RVs and BIG close
Ivation 13-Pint Small-Area Desiccant Dehumidifier Compact and Quiet - With Continuous Drain Hose for Smaller Spaces, Bathroom, Attic, Crawlspace and Closets - For Spaces Up To 270 Sq Ft, White


1. Better Boat Dehumidifier

One of the simplest products on the list, the boat dehumidifier by Better Boat is capable of absorbing moisture and removing the musty smell often associated with molds and humidity on the boat. Inside the package are small crystals that can trap excess moisture, and it is also mixed with tiny charcoal pieces that help in reducing the foul smell on your boat if molds are already growing on it.

You wouldn’t need to take out the crystal outside the box, as the packaging already acts as the container for the excess moisture that the crystal can absorb, but you would need to remove the foil cover below the black lid first to let the crystals perform their function. Despite eliminating the smell on your boat, the Better Boat product is unscented, so you are guaranteed that there will be no unwanted smell on your boat.

2. Better Boat Dehumidifier Bags 4-Pack

Another product produced by Better Boat, the dehumidifier bag’s contents are similar to the previous dehumidifier, but the crystals and charcoal pieces are now packed inside four bags. These bags are suitable for those with bigger boats that may need wider coverage for moisture control.

There are two pouches for each dehumidifier bag, with one containing the crystals and the charcoal pieces and the other showing the crystals that are dissolved after absorbing too much moisture. Once all the crystals are dissolved, and there is no more content found inside the top pouch except the charcoal pieces, then you may need to replace it with another dehumidifier bag.

3. Star Brite No Damp Dehumidifier and Moisture Absorber

The Star Brite No Damp Dehumidifier works like the Better Boat Dehumidifier except that it doesn’t have the charcoal pieces to eliminate to musty smell on your boat. However, it lasts longer because it contains 36 Oz of crystal as opposed to the Better Boat that only has13.2 Oz per pack.

For those with smaller boats, they can opt to only open one pack of the crystals inside the container because they would only need 12 Oz of crystal to control the moisture, and the other bags will serve as quick replacements once the crystals on the main bag dissolve. But if you have a larger boat, then you may need to fill the container with all the crystals in the three bags for optimized humidity control.

4. Caframo Limited Stor-Dry Dehumidifier

If you have a small generator on your boat, then you may use an electric dehumidifier that can last significantly longer than dehumidifying crystals. One of the best electric dehumidifiers out there is the Caframo Limited Stor-Dry Dehumidifier, which can control moisture and circulate warm air around the boat.

Because of its small size, the Caframo dehumidifier wouldn’t occupy a lot of space on your boat, but despite its size, it will be able to dehumidify and circulate air for up to 1000 cubic feet.

5. Pro Breeze Electric Mini Dehumidifier

An upgrade to the Caframo, the Pro Breeze Electric Mini Dehumidifier is bigger, allowing it to actually absorb water instead of just controlling the moisture in the boat thanks to its 16-ounce water tank. Once the water tank is filled, you can easily take it out of the dehumidifier and empty its contents.

The Pro Breeze dehumidifier will be able to absorb moisture for up to 1200 cubic feet, and it will automatically shut off once the humidity on the boat is at a stable level. Unlike older dehumidifiers, the Pro Breeze Mini is quiet because it doesn’t use a compressor, which is the one that usually causes unnecessary noise on the machines. In replacement to a compressor, the Pro Breeze has a built-in Thermo Electric Cooling Technology that prevents it from overheating while providing cool air in the area of coverage.

6. Eva-Dry Wireless Mini Dehumidifier 4-Pack

The Eva-Dry Wireless Mini Dehumidifier is another 4-pack like the Better Boat bags, but the crystals are now placed inside special plastic containers for durability and protection. Similar to the Better Boat, these mini dehumidifiers are compatible with larger boats that may need a wider range for moisture control.

Moreover, these dehumidifiers can absorb 6 to 8 ounces of moisture, and after the crystal inside it is all used up, the water inside will not leak or spill, which is often the tendency with bags whenever they get punctured or damaged. At the center of each dehumidifier is an indicator that shows when the item needs to be replaced; the orange indicator signifies that all the crystals are functional while the green indicator shows that the crystals have already absorbed too much moisture in the air.

7. Ivation 13-Pint Desiccant Dehumidifier

The biggest dehumidifier on the list, the Ivation 13-Pint Desiccant Dehumidifier can absorb up to 11.8 pints of water per day, which is larger compared to the Pro Breeze that can only absorb 1 pint of water. The Ivation dehumidifier will also be able to control the humidity at a low temperature of 33 degrees Fahrenheit and at a high temperature of 105 degrees Fahrenheit, making it one of the most versatile dehumidifiers on the market.

Although it has a large body, the Ivation dehumidifier still runs quietly because it doesn’t need to defrost itself once it absorbs too much moisture, and defrosting can often produce noise for dehumidifiers. To control its dehumidifying features, the Ivation machine has an LCD control where you can set how much humidity it should control.

You can also control how fast its fan rotates and the direction of its air vents. Furthermore, you can set a timer on the dehumidifier using the LCD control panel so that it will automatically go to sleep mode once the time ends. You can remove its water reservoir once there is too much water in it, but you can also insert a small hose on the hole on its back so that it will drain water continuously.

All of these products or devices will be able to help you control the moisture on your boat, but you must also keep in mind that bigger dehumidifiers can bring more problems on your boat if it is small. Bigger doesn’t always mean better when it comes to dehumidifiers, as the space or the area that it covers should also be bigger as well. If you have a smaller boat, it is better to stick with dehumidifying products or mini dehumidifiers instead of purchasing large dehumidifiers.