Best Dehumidifier for Sunroom

While kept warm under the sun during the day, the sunroom can drastically drop in temperature as night falls. It can go from 80 degrees to 60 degrees within a couple of hours after the sun sets. This sudden change in temperature causes the warm moist air to lose its moisture, forming condensation on the glass windows and ceiling. 

Excess moisture in the room creates the perfect environment for mold, mildew, and unpleasant odors. If you’re growing indoor plants in the room, high humidity can be extremely damaging to their health. Furthermore, when airborne, these particles can trigger allergy symptoms, allergy-induced asthma attacks, and other respiratory conditions. To prevent these problems, you must keep the humidity levels within the optimal range of 30% to 50% RH.

A dehumidifier is the most effective solution to humidity control in any room. To make sure you have the best dehumidifier for your sunroom, you need to consider the capacity, coverage area, draining options, as well as additional features like a humidistat to make sure the dehumidifier works as needed. We’ve created a list of the top six best dehumidifiers and the necessary features you must look for before making a purchase.

Best Dehumidifiers for Sunroom

  • Dimensions: 15.97 x 12.19 x 24.25 inches
  • Weight: 41 pounds
  • Capacity: 50 Pints
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  • Dimensions: 11.93 x 15.43 x 24.41 inches
  • Weight: 40 Pounds
  • Capacity: 50 Pints
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  • Dimensions: 22.9 x 14.3 x 11.3 inches
  • Weight: 29.2 pounds
  • Capacity: 0.66 Gallons
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  • Dimensions: 11.42 x 10.63 x 22.44 inches
  • Weight: 31 Pounds
  • Capacity: 70 Pints
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  • Dimensions: 8.5 x 12.5 x 19.5 inches
  • Weight: 17.91 pounds
  • Capacity: 19 Pints
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  • Dimensions: 6.6 x 9 x 12.69 inches
  • Weight: 5.16 Pounds
  • Capacity: 3.3 Pounds
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Best Overall: Frigidaire FFAD5033W1

Frigidaire Dehumidifier, High Humidity 50 Pint Capacity, in White

Frigidaire is often a top choice among dehumidifier users and homeowners. The brand is known for quality appliances and its dehumidifier is no exception. For your sunroom and most any room in your home, we can recommend this 50-pint unit from Frigidaire. It’s particularly popular for its reliable and efficient performance even in low temperatures. Its sleek and simple design stands above the lightweight plastic structure of most other brands on the market today. While there are no exact coverage areas indicated for this dehumidifier line, the 50-pint is recommended for large rooms like basements, garages, and bedrooms. The FFAD5033W1 as well as other Frigidaire dehumidifiers is Energy Star certified for maximum energy efficiency.

Frigidaire provides an easy-to-use control panel with a built-in humidistat, digital display, and LED indicator lights. Set your desired humidity level from 35% to 85% RH and choose from the three fan speeds: Low, Med, and High. The included timer allows you to delay the start or stop operation after 0.5 to 24 hours. 

This 50-pint has a 16.9-pint (2-gallon) water bucket, which is significantly bigger than the 14-pint average for similar dehumidifiers. The auto shut-off feature will automatically stop operation to prevent water overflow when the bucket is full and the bucket full alert will prompt you to empty the container. Manual draining is made easier with the front-loading bucket with a handle and splash guard. Frigidaire’s portable SpaceWise design also includes rolling casters and a top handle for easy movement. For continuous drainage, just attach a standard drain hose (not included) to the outlet. Alternatively, the Frigidaire has a built-in pump option.

The dehumidifier also comes with a washable air filter and an indicator light to remind you to check and clean the filter. Frigidaire dehumidifiers work continuously in low temperatures down to 41°F without an automatic defrost that turns off the unit to melt ice. This saves you on operation time and ensures that the unit is always working as needed. However, some disadvantages are the higher cost of purchase and the standard one-year warranty that comes with it. In any case, with Frigidaire you can always be sure of the quality and reliability.

• Energy Star certified
• Best build quality and design
• Quick and efficient moisture removal
• SpaceWise portable design
• Works well in low temperatures
• Higher price
• Only one-year warranty

Best Value: hOmeLabs HME020031N

hOmeLabs Dehumidifier Brand

Another top pick among homeowners is the hOmeLabs dehumidifier. This compact and portable dehumidifier features almost anything you may need in a household dehumidifier, all at a good price value. This high-capacity dehumidifier removes moisture up to 50 pints per day. It’s recommended for large rooms from 3,000 to 4,500 square feet. It is also Energy Star rated to ensure high energy efficiency and powerful performance.

hOmeLabs includes standard features with a top control panel, a digital humidistat, control buttons, and indicator lights. Select the target humidity level from 35% to 90% RH and the unit will automatically maintain this setting. You can also set the timer to turn off or turn on the unit in 0.5-hour increments up to 10 hours, then in one-hour increments up to 24 hours. You can also find the Comfort, Turbo, and Continuous buttons. Comfort mode automatically sets the humidity level (40%, 45%, or 50% RH) based on the ambient temperature. Continuous mode sets the dehumidifier to run at maximum setting. Turbo mode increases the fan speed from Normal 165 CFM to Max 188 CFM. 

Due to its compact build, hOmeLabs has a smaller water tank, with only a 1.6-gallon (12.8-pint) capacity. For safety, it has the standard auto shut-off features and a full tank indicator light when the tank is full. To avoid manually draining the tank, hOmeLabs offers a more convenient continuous draining option. To enable gravity drainage, attach a standard garden hose (not included) to the drain outlet at the back. For portability, the dehumidifier has four wheels and a recessed handle on each side. Like most other compressor dehumidifiers, hOmeLabs can run in low temperatures down to 41°F, while the auto defrost feature shuts off the unit to melt any frost buildup inside the machine. 

Overall, hOmeLabs gives you all the basic features you may need in a dehumidifier without breaking your wallet. One potential downside is it’s made of lighter plastic, especially in the water tank which could break with repeated use. But for the most part, its efficiency and affordability and longer 2-year warranty outweigh most of its drawbacks. 

• Energy Star certified
• Powerful moisture removal
• Continuous draining option
• Budget price
• 2-year warranty
• Lower quality materials
• Not suitable for small spaces

Best for Small Rooms: Waykar PD160B

Waykar PD160B

Most sunrooms occupy a smaller space in the house. If you want a dehumidifier that is truly portable and compact yet functional, you may be looking for this Waykar unit. This dehumidifier can remove up to 34 pints of moisture in small spaces up to 2,000 square feet. Although, take note that Waykar is not Energy Star rated, so the 34-pint capacity is measured at 90°F and 90% humidity. In actual use, it may collect only around 20 pints a day. It’s built slimmer and shorter than most similar dehumidifiers.

On the top front, you can find the control panel that shows the button controls and indicators common in any residential dehumidifier. You can set the humidity level from 30% to 80% RH and choose between Low and High fan speed. If you set the humidity to 30% RH, the unit will operate in Continuous mode. You can also set a timer to automatically turn on or turn off the unit after one to 24 hours. Waykar can operate in temperatures as low as 41°F and features the standard auto defrost with an indicator light. 

This “34-pint” Waykar unit has a tiny 0.66-gallon (5.3-pint) tank with auto shut-off and “Full” indicator light. Taking the dehumidifier’s capacity into account, you might have to drain the tank manually once or twice a day. For convenience, attach the included drain hose to the outlet on the back to allow continuous drainage. Additionally, the dehumidifier comes with a washable air filter to catch dust and other particles in the air. The air outlet on top can be adjusted in two ways to direct the airflow where it’s needed.

Overall, this Waykar dehumidifier is an easy-to-use portable unit you can place anywhere in the house, from the basement, living room, laundry room, and even a bedroom due to its low noise levels. It has an extendable top handle and four wheels to make room-to-room transport even easier. Although priced lower than the top brands, Waykar may not be the most cost-efficient dehumidifier you can find since it’s not rated by Energy Star.

• Light and portable
• Easy-to-use controls
• Quiet operation
• Continuous drainage with hose included
• Small tank capacity
• Not Energy Star rated

Best for Large Rooms: Kesnos PD253D

Kesnos PD253D Dehumidifier

If you’re looking for a high-capacity yet affordable dehumidifier for a large space, one good option is the Kesnos 70-pint dehumidifier. It is rated to remove up to 70 pints of moisture per day at 95°F and 90% relative humidity. Of course, in most cases, it will only collect a smaller amount of moisture. It is ideal for large spaces up to 4,500 square feet, including basements, attics, living rooms, or even a whole apartment.

While all of our picks above feature a similar design common for portable dehumidifiers, this Kesnos unit has a slimmer and taller build with a smaller footprint. The control panel is still on top with the exhaust surrounding it. It has a huge humidity display and a touchpad where you can set the humidity level from 30% to 85% RH. It also includes a 24-hour on/off timer and two fan speeds. You can pick between two operation modes: dehumidify (where you manually set the humidity and fan speed) or dry clothes (where the fan is set to maximum speed to help dry laundry quickly). You can also turn off the panel lights if you so desire. This unit has a Lock button to prevent children from accidentally changing your settings. In case of a power outage, auto-restart will resume operation in your last settings.

The Kesnos 70-pint is considerably light and compact for its capacity, and this is evident from its small water tank. You might need to empty the 4.5-liter/1.18-gallon tank two to three times a day if you want the dehumidifier running continuously. It has the auto shut-off feature and full tank alert when the tank is full. If you don’t want to manually empty the water, simply attach the included 6.56-ft (2 meters) drain hose and place the unit above a low-level drain to enable continuous drainage.

Similar to other residential compressor dehumidifiers, Kesnos operates down to 41°F and has the standard auto defrost mode. It also comes with a washable air filter. Although it’s not Energy Star certified, this unit actually consumes very little power, at a maximum of 400 Watts. However, the “70-pint” label can be misleading.

• High moisture removal rate
• Compact and portable design
• Easy-to-use intelligent controls
• Continuous drain option with hose included
• Small tank capacity for its size
• Not Energy Star rated

Ivation 19-Pint Desiccant Dehumidifier

Ivation 19-Pint Desiccant Dehumidifier

Unlike the compressor dehumidifiers we listed above, this Ivation desiccant dehumidifier can remove 19 pints of moisture per day in a wider range of temperatures, from 33°F to 104°F. The renewable desiccant technology ensures efficient and quiet dehumidification anywhere and anytime in small spaces up to 410 square feet.

This portable dehumidifier has a simple top display with the usual control buttons and digital humidistat. You can set the humidity level from 35% to 85% RH or run the unit continuously. The auto stop function automatically shuts off the unit during any threat of tilt or water overflow. Auto-restart resumes the operation to your last settings in case of a power interruption.

This small desiccant dehumidifier also features Sleep mode with low fan speed and a dimmable screen for your viewing comfort. The timer lets you schedule start or shut off between 1 and 12 hours. You can also change the fan speed and adjust the movement of the air vents as needed. 

Ivation comes with a washable air filter and a 0.75-gallon tank with a transparent window and a built-in handle. You can also connect the included drain hose for optional continuous drainage. Overall, if you need a reliable and compact dehumidifier where temperatures usually go from the high 80s to the low 60s within one day, then the Ivation 19-pint desiccant unit is the best smart dehumidifier for your sunroom. However, note that desiccant dehumidifiers cost more than the equivalent compressor unit and consume more power when running.

• Quiet desiccant operation
• Works in a wide range of temperatures
• Continuous draining option
• Small and portable
• Energy efficient
• Small capacity and coverage
• Higher cost of purchase and operation

Pro Breeze Mini Dehumidifier

Pro Breeze Mini Dehumidifier

For even smaller areas with minimal humidity issues, it may be ideal to get a cheaper and more compact dehumidifier like the Pro Breeze Mini Dehumidifier. It is recommended for small spaces between 150 to 250 square feet. It extracts up to 18 ounces (500 ml) of moisture and holds up to 52 ounces (1500 ml) in its tank. This means you only have to empty it at least every two to three days. The Peltier effect or thermoelectric cooling technology allows energy-efficient and whisper-quiet dehumidification.

Pro Breeze is incredibly easy to operate with just a single button on top for the on and off switch. It also has the standard auto shut-off for when the water tank is full, as well as an LED indicator light that alerts you when this happens. To empty the tank, simply remove it from the front side of the dehumidifier, pull the plug out then dump the water.

Running on only 20 Watts, this quiet dehumidifier barely makes a difference in your monthly bills. It is extremely lightweight and portable you can easily place it on a counter or table. One downside is that Peltier dehumidifiers are designed to work in smaller spaces with average humidity and temperatures from 59-86°F. This unit will not work below 41°F. This Pro Breeze dehumidifier and its smaller version are some of the best mini dehumidifiers you’ll find today.

• Small, lightweight, and portable
• Low energy consumption
• Whisper-quiet operation
• User-friendly controls
• Smallest capacity and coverage
• Very limited operating temperature range

How to Prevent Mold and Mildew Growth in Your Sunroom

A sunroom provides you with a pleasant view of the outdoors under the sun with the comfort of the indoors. It’s a special room for relaxation and it also requires special care and maintenance. Since it’s surrounded by glass windows from all sides, a sunroom is typically prone to condensation. 

A buildup of condensation in your sunroom can lead to mold and mildew growth, which can be harmful to plants, damaging to fabrics and furniture, and even become a health hazard for you. Finding where mold and mildew are growing isn’t always easy. One thing to watch out for is dark spots in bluish or greenish color on furniture, soft furnishings, and carpeting. Musty odors are also a sure way to tell there is mold in your sunroom.

To prevent the growth of mold and mildew in your sunroom, here are a few basic tips you can follow.

First, regularly clean your sunroom. Some common airborne allergens like dust and pollen can get trapped under furniture and carpets over time. When exposed to too much moisture, these surfaces create the perfect home for mold and mildew. If you want to eliminate mold and mildew, you must always keep the room as clean as possible. Mop or vacuum the floors and carpets, and clean all fabrics, sofas, chairs, and other surfaces. 

Mold and mildew thrive in cold and damp areas. To prevent mold, you must keep humidity down to 50% and remove any excess moisture from your sunroom. Keep the windows closed when humidity levels are typically high to prevent humid air from entering. Make sure all windows are sealed tight and there are no cracks where the outdoor air can sneak in. When the humidity outside is lower and the sun is up, open your windows to let the heat of the sun dry the dampness inside your sunroom. A fan can also help circulate the air throughout the room and speed up the evaporation of moisture on surfaces.

If you can’t open the windows, you may use moisture-absorbing chemicals or desiccants to help reduce moisture inside the room. Some common desiccants include calcium chloride and other similar salt crystals available in hardware stores. You put it in a bowl or tub or inside a cloth bag or sock and place it in a corner of the room to absorb moisture. You can also use other desiccants readily available in most homes such as baking soda, salt, charcoal, and silica gel packets. When all else fails, a dehumidifier is your best solution for humidity control.

How to Prevent Mold and Mildew Growth in Your Sunroom

What to Consider When Buying a Dehumidifier for Sunroom

Before you purchase any appliance for your home, you must know the essential features to ensure maximum performance and efficiency. To choose the best sunroom dehumidifier, consider the dehumidifier’s capacity, coverage area, and draining options available. You’ll also want to look at all the additional features for the best user experience.

Dehumidifier Capacity

This is the total amount of moisture the dehumidifier can collect within 24 hours of operation, often measured in pints per day. As of early 2020, the DOE has started rating dehumidifiers under the conditions of 65°F and 60% humidity. This aims to present a more accurate estimate of the dehumidifier’s performance in a typical, damp and cold basement. Standard residential dehumidifiers today have a capacity ranging from 20 to 60 pints. Full-size desiccant models are similar to smaller compressor dehumidifiers, with a capacity around 10 to 20 pints per day. Peltier dehumidifiers typically range from 8 to 25 ounces per day. 

Each dehumidifier capacity is recommended for a range of coverage areas. The actual amount of moisture removed per day still depends on the size and humidity of the room. A larger and more humid space requires a higher capacity dehumidifier, but the highest capacity unit isn’t always the best. There are also other factors to consider.

Coverage Area

You want a dehumidifier that can cover your sunroom from all its corners. A dehumidifier can accomplish its task more quickly in a smaller area than in a large room with similar conditions. Standard 20- to 35-pint dehumidifiers are ideal for smaller rooms 500 to 2,000 square feet while 50- to 70-pint dehumidifiers are usually recommended for large rooms up to 4,500 square feet. Mini Peltier dehumidifiers can cover tiny rooms smaller than 500 square feet.

Energy Efficiency

If you want to minimize your power consumption and help save the environment, energy efficiency must also be in your top priorities. More energy efficient dehumidifiers can save as much as 15% on your monthly utility bills compared to similar low-energy efficiency models. You can find the energy efficiency information of your dehumidifier in the manual or on the unit itself. Look for the Energy Star label to make sure the unit has passed certain energy efficieny requirements.

Drainage Options

By default, dehumidifiers collect water in an internal tank. With the usual compressor dehumidifier, the tank may fill up within a few hours, and then the unit will stop and you have to empty the water to resume operation. While the process itself is easy enough, it can be inconvenient when you have to do it multiple times a day. For your convenience, most dehumidifiers also offer continuous draining options. Just attach a drain hose (which may not be included) to the drain outlet (on the back or side of the unit). Make sure to remove any obstruction to the water flow and position the hose directly downward to a low-level drain. Some high-capacity dehumidifiers from 50 pints or larger may also offer a built-in pump for draining. You can learn more about dehumidifier draining options here.

Additional Features

Dehumidifiers today usually include the standard auto-shutoff, auto defrost, and auto restart features along with the appropriate indicator lights. They also feature a built-in digital humidistat so you can set your preferred humidity level while the dehumidifier automatically maintains this setting. You can also find an on/off timer, multiple fan speeds, and different operation modes for your specific needs. Make sure to check all the features available and which ones you need most before choosing a dehumidifier.


Having a sunroom at home is a luxury that requires your utmost care and maintenance. Due to its nature, the sunroom may suffer from condensation when temperatures and humidity levels fluctuate. Excess moisture can give rise to mold, mildew, and musty odors. If given a chance, mold and mildew can quickly spread and damage your furniture and other belongings. To prevent these, it’s essential to perform regular cleaning and keep the room warm and dry. Open the windows when necessary and use DIY moisture absorbers. For best results, get a dehumidifier that can control humidity constantly and keep it within the ideal range of 30% to 50% RH depending on the ambient temperature. Remember that even the best dehumidifiers require proper care and maintenance to continually provide dry air to your room. Take another look at our top six picks and the list of essential features to help you choose your own sunroom dehumidifier.

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