6 Best Dehumidifiers For Attic (That Dries Out Even The Most Wettest Attic!)

Is your attic an active part of the house or just storage? Regardless of how you are utilizing this space, surely, you want it to be free from mold and mildew caused by high humidity. To alleviate high humidity, you need to have the best dehumidifier for an attic that can prevent the excess moisture from flowing in.

Attics can get hot and humid during the summer especially when the outside air leaks in. However, you need to have a specific dehumidifier for the job. To help you out, I searched for the best dehumidifier for your attic that will surely pull the extra moisture.

What is the Best Dehumidifier for Attic? Top 6 Brands to Look For

what is the best attic dehumidifier

When looking for an attic dehumidifier, you need to first list down, what you need, and how you will set it up. There are so many dehumidifiers out there with outstanding capabilities and you might get lost in searching for what’s best for your attic.

Here’s a quick rundown of the top attic dehumidifier features you should consider:

  • Continuous Draining - Dehumidifiers come with limited water tanks based on their size. Since you are going to install in the attic, it’s given that you may not be there often to check on the unit. So it’s best that you consider a dehumidifier with a continuous draining feature that you can easily hook into a larger tub or in the toilet.
  • Size - The next feature you have to consider is the dehumidifier size. This is based on the room size and the total moisture it can remove within the 24 hour period. You can choose between a 30, 50, or 70- pint dehumidifier. I recommend going to a bigger size dehumidifier since it can have more effective results.
  • Humidistat/ Humidity Control - Find a dehumidifier that has a humidistat or humidity control set to give you a real-time reading of the current attic atmosphere.
  • Auto Restart Mode - Because no one really goes to the attic frequently, you need a dehumidifier that can power off by itself according to the number of hours you wanted. However, an auto shut-off may be a common feature in all dehumidifiers, if you can find a unit that can power on and off based on your preferences then the better.
  • Warranty - A good and longer warranty period keeps your mind at peace especially when your dehumidifier goes wrong. When looking for a dehumidifier for your attic, search for those with good warranty coverage.

Here are the top 6 brands you can check out with all these features:

Honeywell 70 Pint Energy Star Dehumidifier

Honeywell 70 Pint Energy Star Dehumidifier

Specific Features (Click Here To Know More)

Searching for the best dehumidifier for your attic can be challenging especially when you have many options at hand. However, based on the recommended features I listed above, this Honeywell TP70WK is the perfect fit.

This model introduces a smart digital humidistat control operation that automatically recognizes room moisture levels. Only then that it activates dehumidification to improve the indoor environment and maintain desired humidity levels.

It’s also hassle-free maintenance because it will notify you separately when it’s time to clean the filter or drain the water tank.

Honeywell TP70WK is very economical since it has a washable dust filter that helps reduce dust and pollutants while at the same time, can be easily and quickly cleaned with water.

The water tank is decked with Splash Guards which is a unique Honeywell feature with patent-pending to avoid messy spills. To even out the attic humidity issues, this model features a drain tube for long unattended operation.

I like the mobility feature of this unit since I like to move around the house, it’s easy and fast to transfer it anywhere with its smooth gliding wheels and heavy-duty handles. You won’t have a hard time carrying this dehumidifier up and down the attic.

What’s more exciting with this brand is the 5-year warranty where you get secured in case your unit fails. However, the only downside I found is the loud humming sound even though it highlights a quiet operation, but then, it’s still manageable.

Keystone KSTAD707A 70 Pint Dehumidifier

Keystone KSTAD707A 70 Pint Dehumidifier

Specific Features (Click Here To Know More)

The Keystone KSTAD707A works like a charm in removing the extra humidity, especially in the attic. Design-wise, it’s very sleek and modern, plus mobility is smooth with included wheels.

It’s ideal for your attic considering its auto-restart and shut-off features; you don’t have to go up and check on it every single time. A bonus feature is the continuous draining option where you can leave it on all day if needed.

However, this particular model does not come with the hose, but you can use a universal one in case. Another notable characteristic of this model is the programmable timer, where you can set it in advance and just leave it on!

Downsides include a portion of water spilling if you use the tank option. Removing the water tank is quite a challenge especially when it’s full. There is also an annoying sound that’s close to a window AC when turned on. But overall, this Keystone dehumidifier does the job of keeping a balanced indoor humidity well.

Perfect Aire 70 Pint Energy Star Dehumidifier with Pump

Perfect Aire 70 Pint Energy Star Dehumidifier w/ Pump

Specific Features (Click Here To Know More)

Keeping the indoor air cozy and comfortable is very challenging during the summertime and much more in the attic. But, Perfect Aire dehumidifier made it smooth and manageable.

This model boasts of its 3-way drainage options where you can just plug and play. You can choose between the ejector pump, gravity drain, and the bucket removal option.

Perfect Aire makes it a breeze in removing excess moisture from the air in spaces up to 4,500 square feet, ideal in your living space, attic, and basement. A simple touch of the button can greatly ease high attic humidity and lets you adjust and set your desired humidity levels.

Portability and mobility are also smooth considering the caster wheels attached so you don’t have to exert a lot of effort in moving this unit around.

So far, it has all the needed features that will work in the attic and with regards to its downside, the sound may be the only issue I see by far but tolerable. Although it only has a year of limited warranty, you are surely at peace that this model performs way than expected.

Friedrich 50-Pint Energy Star Dehumidifier with Pump

Friedrich 50-Pint Energy Star Dehumidifier with Pump

Specific Features (Click Here To Know More)

Getting precise humidity in the attic is possible with Friedrich 50-pint dehumidifier as it provides you with seamless features to eliminate excess moisture. Now moving around the attic is not a problem anymore since this unit has a longer power cord about 6ft and drain hose of about 17ft.

You can finally position your dehumidifier in the central attic area to effectively reduce high humidity. Plus, transferring this device from different rooms is convenient with the rolling wheels included.

What’s great about Friedrich is the 3-drainage option you can choose from, bucket, using the pump, and continuous gravity drain. All the features seem to be favorable except for the noise this tiny machine gives out. The pump is quite noisy but manageable.

LG 70 Pint Energy Star Dehumidifier

LG 70 Pint Energy Star Dehumidifier

Specific Features (Click Here To Know More)

LG also jumped into the dehumidifier wagon and recently topped the consumer ratings with this 70-pint dehumidifier.

This unit is very practical and easy to use anywhere in the house of up to 1,200 sq ft in size. If your concern is the loud noise dehumidifiers emit, this model has a near-quiet operation of around 46dB.

Placing this LG dehumidifier in the attic can greatly improve the high humidity problem without too many interferences.

You simply set the desired humidity level, turn on the unit, and leave it running. It has auto restart and shut-off features where you don’t have to worry about going up and down just to monitor the device.

The only downside I see that’s highly notable is the leaking issue when the bucket drain option is used.

Whynter 60 Pint Portable Dehumidifier (RPD-621EW)

Whynter 60 Pint Portable Dehumidifier (RPD-621EW)

Specific Features (Click Here To Know More)

Would it be nice when you own a dehumidifier that has all the features you need for your attic plus it is energy and environment efficient? Whynter RPD-621EW is the ideal choice when you have these things in mind.

Just like your basement, you barely utilize the attic unless needed so there is a great chance that mold and mildew are already sprouting everywhere. Fortunately, this unit is equipped with auto-restart and shut-off features where you can simply run the unit on until you get the desired humidity levels.

Since it will be used in the attic, draining the water can be a challenge, so this model practically added two ways on how you can drain the water, manually with the included water bucket or gravity using the 20-inch drainage hose.

Overall, in terms of Whynter RPD-621EW got all the features except for the condensate pump which is not included but can be purchased separately and attached into the port so you can drain water upwards or on longer areas.

Where to Place the Dehumidifier in the Attic

where to place the humidifier in the attic

Just like any other room in the house, you must place the dehumidifier in the attic in a position and location that’s far from any obstructions and dangers.

Ideally, you can place it at the central part of the attic so it can dehumidify the entire space. Otherwise, you can place it near the toilet or a larger bucket if you use the continuous drain feature.

Or, you can put it at least a foot above the floor and also from the walls or any objects present in the attic. In this way, your unit does not interrupt the airflow inside.

Best Dehumidifier for Attic, What's My Take?

Overall, my choice for the best dehumidifier for the attic is torn between Perfect Aire 1PEDP70 and Friedrich 50-pint. I find these models ideal because both have outstanding features needed in reducing high attic humidity. They only vary in size; but, both have exceeded my personal expectations.

My criteria for the best dehumidifier for attic comes from the size to adjustable humidity control, down to draining options, and of course, the warranty coverage. Both brands did very well in making sure they offer only the best to their consumers.

Nevertheless, each of the brands I mentioned is excellent in their own right and you have the option to go for them in case any of their specific features fit your needs.


High humidity can seep into any parts of the house and there’s no escape to it, even in the attic. In fact, your attic houses the highest humidity in the summer because it’s just below the roof and is prone to leaks and condensation.

Managing high attic humidity is easy if you practice the tips I have listed earlier, plus of course choosing the fitting dehumidifier for you. Remember that a dehumidifier is only a temporary solution so if you are experiencing severe humidity problems in the attic, it is best to find the source and fix it permanently to protect your home.