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8 Best Dehumidifiers for the Attic

Last updated October 18, 2021

This post may contain affiliate links.

Author
Author avatar Danny Ashton

Danny as been writing about air purifiers for 10+ years. He is a major fan of home technology, which makes him the perfect person to test and evaluate products for HouseFresh

For many of us, the attic is often a forgotten space within our home. Out of sight and out of mind, yet entrusted to store some of our most prized possessions, be it photo albums, a wedding dress, or old children’s toys too sentimental to give away. However, there is an ever-present threat waiting in each of our attics, that can lay waste to treasures and even threaten the structure of your roof. Namely, moisture.

Due to the location within the house, the attic is one of the first spaces affected by mold, mildew, and damp, all as a result of excess moisture in the air. The primary culprit for this is condensation. As warm air rises from the home and hits the cold surface of the roof, the air contracts leaving behind moisture, with inadequate insulation and ventilation and leaky roofs often exacerbating the issue.   

By utilizing a dehumidifier in your attic will prove to be an excellent way to address the issue. Dehumidifiers work by: 

  • Drawing in warm air into the machine 
  • Cooling it to extract any water vapor 
  • Leaving cool dry air to be redistributed

This will vastly reduce the amount of moisture in your attic, preserving any items in storage as well as the timber supporting your roof. 

In order to help you find the perfect dehumidifier, we’ve put together 8 top recommendations, across a range of budgets, that will keep your attic dry. 

It’s important to remember that dehumidifiers will work at their optimum in a certain size space. For larger spaces, be sure to go for a machine capable of covering an adequate square foot area, such as the ALORAIR, while smaller spaces will be better suited to the Pro Breeze Electric Dehumidifier.    

When putting together our recommendations, we analyze Consumer Reports and verify product reviews through Fakespot to ensure genuine users are satisfied with their dehumidifier and it will work wonders for excess moisture in your attic.

Dehumidifier
Our #1 Choice
Best for Smaller Attics
Best for Larger Attics
Midea 4,500 Sq. Ft. Energy Star Certified Dehumidifier with Reusable Air Filter 50 Pint 2019 DOE (Previously 70 Pint) - Ideal For Basements, Extra Large Rooms and Bathrooms (White)
hOmeLabs 1,500 Sq. Ft Energy Star Dehumidifier for Medium to Large Rooms and Basements
ALORAIR Basement/Crawl Space Dehumidifiers Removal 120 PPD (Saturation), 55 Pint Commercial Dehumidifier, Energy Star Listed, 5 Years Warranty, Auto Defrosting, cETL, Optional Remote Monitoring
Pros
Easy maintenance including drainage through an ordinary garden hose
Removes moisture through a pump compressor
Built-in corrosion protection system
Cons
This is a larger unit which reduces its portability
A drainage hose will need to be purchased separately
A little on the heavy side
Room Size Suitability
4500 sq ft
1500 sq ft
1300 sq ft
Features
Automatic restart function | continuous dehumidification mode
Wheels for easy portability | Turbo mode
Automatic defroster
Weight
33.5 lbs
30.5 lbs
57.2 lbs
Price
$323.98
$179.97
$629.69
Our #1 Choice
Dehumidifier
Midea 4,500 Sq. Ft. Energy Star Certified Dehumidifier with Reusable Air Filter 50 Pint 2019 DOE (Previously 70 Pint) - Ideal For Basements, Extra Large Rooms and Bathrooms (White)
Pros
Easy maintenance including drainage through an ordinary garden hose
Cons
This is a larger unit which reduces its portability
Room Size Suitability
4500 sq ft
Features
Automatic restart function | continuous dehumidification mode
Weight
33.5 lbs
More information
Price
$323.98
Best for Smaller Attics
Dehumidifier
hOmeLabs 1,500 Sq. Ft Energy Star Dehumidifier for Medium to Large Rooms and Basements
Pros
Removes moisture through a pump compressor
Cons
A drainage hose will need to be purchased separately
Room Size Suitability
1500 sq ft
Features
Wheels for easy portability | Turbo mode
Weight
30.5 lbs
More information
Price
$179.97
Best for Larger Attics
Dehumidifier
ALORAIR Basement/Crawl Space Dehumidifiers Removal 120 PPD (Saturation), 55 Pint Commercial Dehumidifier, Energy Star Listed, 5 Years Warranty, Auto Defrosting, cETL, Optional Remote Monitoring
Pros
Built-in corrosion protection system
Cons
A little on the heavy side
Room Size Suitability
1300 sq ft
Features
Automatic defroster
Weight
57.2 lbs
More information
Price
$629.69

Last update on 2021-10-19 / Affiliate links / Images from Amazon Product Advertising API

1. hOmeLabs 1,500 Sq. Ft Energy Star Dehumidifier

 

This exceptional hOmeLabs Dehumidifier is super very easy to use and automatically shuts off when the tank is full. Featuring a sleek design, this dehumidifier removes moisture through its pump compressor. This dehumidifier can be set to work at a specific time in order to make your home comfortable whenever you like. It is a powerful dehumidifier that reduces humidity to the perfect level keeping your allergies away while preventing discomfort. 

This dehumidifier has an easy-to-read display and, using it, you can adjust the humidity levels for the right setting for your comfort needs. Additional features include an automatic shut-off at the time you set it at, a defrost setting, and as well as automatic restart functions that make it convenient for you to use.

Other than emptying the tank occasionally, this unit is designed to be set and then for the most part forgotten about. This is a helpful feature for those that have an extremely busy lifestyle. It is capable of handling a fairly large space up to 1500 square feet, perfect for those with larger attics.

  • Moisture Removed: 22 Pints
  • Room Size Suitability: 1500 square feet
  • Weight: 30.5 Pounds
  • Special Features: Wheels for easy portability

What we love

  • Removes moisture through a pump compressor
  • Turbo mode for when you need an extra helping hand
  • Automatically shuts off when the tank is full
  • Easy to use controls

We don't like this as much

  • It can be noisy when running
  • A drainage hose will need to be purchased separately if you intend to use this feature

2. Inofia 30 Pint 1500 SQ FT Home Dehumidifiers

This quiet and highly portable dehumidifier from Inofia measures 12.2 x 8.2 x 17.3 inches and comes with a handle to make it easy to carry up to the attic. It can remove up to 30 pints of moisture per day from any room up to 1500 square feet. This includes your attic, a common area for moisture problems. It has easy-to-use controls with a humidistat that automatically turns on and off the unit based on the humidity level. 

You can adjust the fan speed and the on/off timer to improve energy savings. It has an easy-to-use drainage system that comes with a 6.56-foot drainage hose. It is easy to attach, allowing this unit to drain its reservoir by way of gravity when full. This unit is very quiet with a peak volume of 46 decibels, allowing it to be used anyplace and anytime you need moisture removed from your room.

  • Moisture Removed: 30 Pints
  • Room Size Suitability: 1500 square feet
  • Weight: 24.9 Pounds
  • Special Features: Humidistat for automatic operation

What we love

  • The handle grants this unit exceptional portability
  • Works efficiently in low-temperature areas
  • Automatic switch-on based on moisture levels
  • Self-draining with an attachable hose

We don't like this as much

  • We’d love to see this dehumidifier available in other colors
  • Motorized drainage would help alleviate the issue of needing to place the unit higher than the pump

3. ALORAIR Basement/Crawl Space Dehumidifiers

This ALORAIR Dehumidifier measures 11.81 x 17.72 x 11.81 inches and is Energy Star certified, so you can be certain that this unit operates very efficiently. It effectively and quickly removes moisture, saving you money. It is designed to be a dehumidifier for crawl spaces and basements however it can be used for storage areas like an attic where you may not notice extra moisture. 

It can remove as much as 55 pints of moisture per day but has a tank capacity of 120 Pints meaning that only needs to be emptied every couple of days. It has an automatic, efficient, and fast defroster, This dehumidifier is able to work at temperatures as low as 36 degrees Fahrenheit. 

It has automatic frost detection on the coils that automatically runs the defrost cycle to prevent frost from building up. This means that this unit can run continuously, pausing only to defrost while only needing its reservoir drained every couple of days. This dehumidifier is an excellent solution for many room types while also being energy efficient and also low maintenance.

  • Moisture Removed: 120 Pints
  • Room Size Suitability: 1,300 square feet
  • Weight: 57.2 pounds
  • Special Features: Automatic defroster

More options like this: 8 best low temperature dehumidifiers

What we love

  • Is Energy Star Certified for energy efficiency
  • Automatic defrost system
  • Features dual handles for easy carrying
  • Built-in corrosion protection system

We don't like this as much

  • This unit is a little on the heavy side, which may require a little extra effort to get up to the attic
  • We wish a remote control was included with the unit, however, it is available to be purchased separately

4. Pro Breeze Electric Dehumidifier

This small and highly compact portable Pro Breeze mini dehumidifier measures 7 x 6 x 11 inches making it ideal for rooms smaller than 2200 cubic feet. It efficiently reduces the humidity in a small attic to reduce problems caused by moisture such as mold and mildew. It is lightweight so that it can easily be moved to various locations. Its advanced Peltier technology makes it highly energy-efficient and extremely quiet. As a result, it can be run both day and night without any issues.

This unit has an automatic shut-off system for when the reservoir is full. When this occurs, an LED indicator will turn on to inform you that the water tank is full and needs to be drained. The drainage tank can be easily emptied and returned to the unit.

It has a preferred operating temperature of 59-86 degrees Fahrenheit, with a minimum operating temperature of 41 degrees Fahrenheit. On average it will use only about a half kilowatt of power after running for a full day. This small highly efficient dehumidifier is perfect for individual rooms and other small places.

  • Moisture Removed: 1 Pint
  • Room Size Suitability: 215 square feet
  • Weight: 2.4 Pounds
  • Special Features: Automatic shut-off

What we love

  • Automatic shut-off when the tank is full
  • Small and lightweight, making it highly portable
  • Operates very quietly
  • Highly energy-efficient

We don't like this as much

  • This unit is not recommended for very cold climates where attic temperatures can get extremely low
  • The tank size is on the smaller side, so may require frequent emptying

5. Midea 4,500 Sq. Ft. Energy Star Certified Dehumidifier

Having high humidity levels in your home can quickly lead to mold and mildew on your floors and walls. Side effects of these problems are stale air and pervasive bad smells. These problems can become even worse in your attic where they may go unnoticed until it is too late. With the Midea Dehumidifier, you can maintain the perfect air quality in your home and help alleviate mold and mildew-related issues.

The reservoir is extremely easy to empty when the tank is full. You can also connect the unit to a standard 75-inch garden hose (not included) to let gravity continuously drain the reservoir. This unit has a reusable air filter to maintain good air quality. All you have to do to maintain this filter is to clean it periodically. This unit has several operating modes that maintain comfortable levels of around 45%-55% humidity. 

This dehumidifier can manage a large area of 4,500 square feet and measures 15.94 x 11.54 x 24.29 inches. It will keep your home continuously comfortable and it even has an automatic restart feature that will kick in if there is a power failure.

  • Moisture Removed: 50 Pints
  • Room Size Suitability: 4,500 square feet
  • Weight: 33.5 pounds
  • Special Features: Automatic restart function | continuous dehumidification mode | Standard garden hose connectivity

What we love

  • Quiet enough to use in your attic bedroom without disturbing your sleep
  • Easy maintenance including drainage through an ordinary garden hose
  • Automatically restarts after a power failure
  • A one-year parts and labor warranty

We don't like this as much

  • This is a larger unit which reduces its portability
  • The unit emits warm air, which is worth considering if you desire a consistent temperature

6. Yaufey 1750 Sq. Ft Dehumidifiers

The energy-efficient Yaufey dehumidifier measures 12.2 x 8.2 x 18.9 inches and can be used to prevent excess moisture in an attic space up to 1750 square feet in size. This unit has an easy-to-use control panel that responds to a light touch. You can set it for the humidity level that is best for you and your family and then let it run on a 24-hour cycle to keep humidity exactly where it needs to be.

This is a quiet dehumidifier that will allow you to sleep without being disturbed. You can program the unit’s 24-hour timer to fit your needs. It can be carried or rolled on its wheels, allowing it to be relocated to any room in the house where you may need it.

Featuring both regular and turbo modes, the Yaufey Dehumidifier adapts to tackle moisture issues in your home, large or small. This unit also comes with a 30-day money-back guarantee and a 12-month replacement guarantee. The company also provides support for the lifetime of the unit. 

  • Moisture Removed: 32 Pints
  • Room Size Suitability: 1750 square feet
  • Weight: 23.8 Pounds
  • Special Features: Optional automatic drainage | wheels for portability

What we love

  • A large capacity reservoir that holds 32.7 pints
  • Optional automatic drainage, along with its own hose
  • Can be easily moved on its own wheels
  • Quiet so it will not disturb you

We don't like this as much

  • We’d like to see a longer power cord to remove the potential need for an extension cord
  • We wish this unit had remote control functionality

7. Kesnos 70 Pint Dehumidifier

The Kesnos 70 Pint Dehumidifier measures 11.42 x 10.63 x 22.44 inches and can remove as much as 70 pints per 24 hours under the right conditions. It is designed to work in an area up to 4500 square feet with an adjustable humidity between 30 percent and 85 percent. This is a wonderful humidifier for keeping your attic from having excess moisture resulting in mold and mildew problems.

This unit is easy to use and set up. You just need to set it on the right humidity level, set up the 24-hour timer, and let it run. It has a two-foot drainage hose that allows for the option of automatic drainage. This means that you can essentially set it up, turn it on and basically forget about it. Naturally, you should check up on it periodically. Once you have it set up you do not have to keep a continual eye on it.

This unit comes with a 30-day money-back guarantee, a one-year warranty, that can be extended to two years, and lifetime technical support, making it a worry-free system.

  • Moisture Removed: 70 Pints
  • Room Size Suitability: 4500 square feet
  • Weight: 31 Pounds
  • Special Features: Optional automatic drainage| humidity auto control | 24-hour timer | automatic shut off/on | auto defrost | child-lock setting

More options: 7 Best 70 Pint Dumhidifiers

What we love

  • User-friendly control panel
  • You can easily set the humidity level
  • It has a programmable 24-hour timer
  • It comes with a drainage hose for optional automatic drainage

We don't like this as much

  • The addition of wheels would help make this unit more portable
  • We wish all of the control panel buttons were illuminated to aid with seeing at night

8. Keystone 35 Pint Dehumidifier

The Keystone 35 Pint Dehumidifier boasts an impressive ability to remove as much as 35 pints of moisture per day. Able to handle up to 3000 square feet of space, this dehumidifier provides optimal coverage for your attic while maintaining the right humidity. With this unit’s easy-to-use controls you can set the humidity level in your home to wherever is right for you. Once you have it set you can just let it run. The control system uses an easy-to-read LED display when you change your settings.

This unit has three settings of normal, turbo, and auto-defrost. It also has a bucket full alert, an auto-restart for power failures, a clean filter alert, and an automatic shut-off function for when the humidity is low enough.

This unit has an optional automatic draining system that is designed to be used with an ordinary garden hose. This provides a convenient alternative to emptying the bucket. This unit has a removable dust filter that can be easily cleaned. It is heavy but has wheels so it can be moved.

  • Moisture Removed: 35 Pints
  • Room Size Suitability: 3000 square feet
  • Weight: 38.5 Pounds
  • Special Features: Automatic draining option, auto-defrost | clean filter alert | auto-restart

What we love

  • Automatic drainage using a garden hose
  • Easy-to-use controls through the LED display
  • Washable air filter
  • Adjustable humidity settings

We don't like this as much

  • This unit does produce a little noise
  • Produces a noticeable amount of heat

Frequently Asked Questions

What are the main causes of Attic moisture?

Attics need to allow warm air in and moisture out, therefore in an ideal world, they would be properly ventilated. If an attic is not properly ventilated moisture will build up. This is particularly true if you have a clothes dryer that vents to the attic instead of outside the house.

Other causes of attic moisture can include; the presence of an air conditioner condensate pan that is not draining properly, a bathroom exhaust fan that vents to the attic instead of outside, and storing firewood in the attic where moisture in the wood evaporates.

Is a Dehumidifier the best solution for attics?

When high humidity in an attic is a problem, the most critical thing you need to do is get the humidity level down and a dehumidifier will do just that. A dehumidifier is one of the most effective ways of dealing with attic humidity, however, it is also important to consider whether you are able to mitigate moisture occurring in the first place. By using a dehumidifier, you can maintain a constant level of humidity, effectively reducing any potential damage to your goods stored in the attic, giving you time to explore the underlying cause of the humidity.

What are the signs of moisture in an attic?

There are definite signs that you have excess attic humidity. Among them is water condensation on surfaces like windows, and pipes. Another indicator is mildew or a musty odor in the attic that often includes discoloration of wood insulation and other surfaces in the attic. This discoloration can be green, white, black, or orange. It could be accompanied by boxes feeling damp or soggy. The presence of soft, rotting wood is evidence of advanced moisture damage to the house itself. All these indicators show a need for immediate action.

Which Dehumidifier is best for you?

If you are experiencing humidity problems in your attic, or any place else in your home, a dehumidifier may be just the answer that you need.

There are many different types of dehumidifiers, they come at a variety of prices, sizes, and abilities. Finding the one that is right for you depends upon your needs. It also depends upon the amount of space you need to dehumidify, your budget, the interface controls you like, as well as many other factors. If you are in need of a dehumidifier, review some of the units on this list and then look at what your needs are. Look at the size of your attic, look at your budget, then decide which is the best fit for you and your needs.

Budget/Smaller Rooms – Pro Breeze Electric Dehumidifier
Mid-range Rooms – Yaufey 1750 Sq. Ft Dehumidifiers
Larger Rooms – Kesnos 70 Pint Dehumidifiers