Best Dehumidifiers for Your Home

Ideal for basements and laundry rooms, which trap moisture and musty smells, dehumidifiers come in three sizes. Choose yours based on the room you're using it in. Here's how to determine whether the room you're trying to dehumidify is damp, very damp, wet or very wet. 

• Damp rooms: An area (maybe a closet or basement) that has a musty odor specifically on humid days.
• Very damp rooms: Always feels humid. You may see water spots on the walls or floors often.
• Wet room: An area that always smells and feels wet upon entering; you will often see wetness/condensation on floors and walls.
• Very wet room: A smaller laundry room or basement that accumulates condensation easily. Also a space that likely suffered a flood or leak.

30-pint dehumidifier:

• Damp rooms of 500 to 1,500 square feet
• Very damp rooms of 500 to 1,000 square feet
• Wet rooms of 500 square feet

50-pint dehumidifier (or a unit between 40- and 59-pint capacity): 

• Damp rooms of 2,000 to 2,500 square feet
• Very damp rooms of 1,500 to 2,000 square feet
• Wet rooms of 1,000 to 1,500 square feet
• Extremely wet rooms of 1,000 square feet

70-pint dehumidifier (or one with 60-pint capacity or greater): 

• Very damp rooms of 2,500 square feet
• Wet rooms of 2,000 to 2,500 square feet
• Very wet rooms of 1,500 to 2,500 square feet

Capacity: Standard rating for dehumidifier power, which indicates the moisture level and room size the unit can handle.

Small Capacity Portable Dehumidifer: 

• Typical Capacity Range: 25 to 35 pints per day
• Suggested Application: Damp Conditions in small rooms

Medium Capacity Portable Dehumidifer: 

• Typical Capacity Range: 40 to 50 pints per day
• Suggested Application: Damp conditions in medium and large rooms

Large Capacity Portable Dehumidifier:

• Typical Capacity Range: 65 to 75 pints per day
• Suggested Application: Wet or damp conditions in large rooms

Whole House Dehumidifier: 

• Typical Capacity Range: 90 to 140 pints per day
• Suggested Application: Wet or damp conditions in a small-to-medium size house

Dehumidifer types have a variety of options to choose from. Before purchasing, be sure to understand your new unit’s tank capacity, run time and features. 

• Drain hose connection: A connection that allows you to bypass the bucket in a portable dehumidifier and empty water into a hose leading to a drain.
• Automatic defrost system: Saves energy by automatically shutting off the unit if frost forms on coils, preventing proper operation.
• Multi-speed fan: A type of fan that runs at slower speeds in less humid conditions, reducing noise and energy consumption.
• Built-in pump: System allows you to run the drain hose up to a window, sink or elevated drain.
• Portable or whole house: Decide if you need a larger unit, whole house, or if a smaller, portable unit is right for you.

Portable dehumidifiers or residential dehumidifiers offer some of the best small dehumidifiers for your home and come in various sizes. 

• Work the same basic way as a window air conditioning unit: Fan blows moist air from the room across cold refrigerant-filled coils, which cool the air, causing the moisture to condense into water droplets. The water collects in a bucket, which needs to be emptied periodically.
• Many portable models have a hose attachment that lets you drain the water directly into a sink or basement drain, making them the best dehumidifiers for bathroom use.
• Includes a separate heating coil that warms the air again before expelling it into the room.
• Commercial dehumidifiers are commonly portable as well.

Tip: Basements commonly need a dehumidifier because of potential mold growth and mildew. The best dehumidifier for a basement and garage dehumidifiers will keep the humidity in that space at below 50 percent relative humidity. 

Whole house dehumidifiers are good for use in spaces up to 3,000 square feet.

• Empties collected water into a drain leading outside the house rather than a refillable bucket.
• Works the same basic way as portable models, but with extra power necessary to dehumidify several rooms at once.
• Some dehumidifier models connect to ductwork in a forced air heating system; others are self-contained systems.

Tip: Crawl space is an area with limited height under a floor or roof that can gather moisture if standing water or the outdoor invades the space. The best crawl space dehumidifiers monitor the RH level in the crawl space and are easier to maintain than portable dehumidifiers.

Dehumidifiers have several benefits to combat allergy symptoms or poorly ventilated areas in your home. A lot of people wonder, what does a dehumidifer do and what are the benefits? These are the advantages to having a dehumidifier in a home that may be capturing mold, dust mites, mildew or other triggers:

• Reduce humidity levels
• Diminishes musty or rotting smells
• Limits dust
• Lowers energy costs and helps cool home
• Eliminates quick corrosion of electronics and tools
• Eases skin irritation from too much humidity

The best dehumidifier for your home will ultimately depend on the type of housing you reside in. For multi-housing units and apartment buildings, mold and mildew can travel through vents or cause build-up in walls. A dehumidifier can help manage these allergens and keep them from harming your health when operated regularly. Those with allergies may consider buying an air purifier as well.