Finding the right size dehumidifier for your home can be a bit of a puzzle. With the myriad of options available on the market, each boasting varying capacities and features, it’s not surprising that many homeowners find themselves scratching their heads when trying to determine the perfect fit.

Whether you’re grappling with excessive humidity causing health issues and potential water damage, or you’re simply looking to create a more comfortable living environment, selecting the right dehumidifier size for your space is the crucial first step.

Join me below as we unravel the mystery of sizing dehumidifiers, providing you with insights and practical tips to ensure that you’re equipped to make an informed decision tailored to your unique space and needs.

What Size Dehumidifier Do I Need?

The size of the dehumidifier you need hinges on the square footage of the space you want to dehumidify. So Your first step should be measuring the total square footage of the space you intend to dehumidify.

This is because different models are designed to handle different room sizes, so knowing the size of the room is crucial. If the space you wish to dehumidify measures 20 ft long by 10ft wide, the total square footage will be 200 square feet.

But, let’s move beyond the dimensions of your space for a bit and explore a few more essential factors that come into play when it comes time to choose the right dehumidifier size for your space.

Choosing The Right Sized Humidifier

Considerations When Choosing The Right Sized Humidifier

Consider Relative Humidity

Relative humidity, or RH, is a measure of the moisture content in the air compared to the maximum amount of moisture the air can hold at a particular temperature.

Generally speaking, indoor relative humidity should ideally be maintained between 30% and 50% for optimal comfort and to prevent mold and mildew growth. If you’re dealing with excessively high humidity levels, you’ll need a larger, more powerful, humidifier.

Here are some telltale signs that can help you identify the need for a bigger dehumidifier to reduce the humidity, especially if you experience several issues at the same time:

  • Condensation on walls, pipes, doors and windows
  • Musty odors pervading your space
  • Visible patches of mold growth and mildew on various surfaces
  • Warped wooden furniture, floors, or structures
  • Peeling or bubbling wallpaper or paint
  • Increased pest activity, such as dust mites and roaches
  • Struggling AC units
  • Clammy feeling on the skin

You can also use an electronic humidity meter, a handy tool for quantifying excess moisture levels accurately, to determine relative humidity levels.

Consider the Condensation Rate

The amount of moisture your dehumidifier needs to remove, often measured in pints of water per day, is another important consideration. If your area experiences heavy humidity or dampness issues, you’ll need a dehumidifier with a higher condensation rate.

For example, a small bedroom might require a dehumidifier with a capacity of 12 pints per day, while larger areas or extra-humid areas like basements might need models capable of extracting 70 pints or more.

Identify Problem Areas

Pinpoint areas in your home where moisture tends to accumulate the most. Basements, bathrooms, and laundry rooms are common culprits.

If you’re targeting a specific trouble spot, it’s a good idea to invest in a smaller dehumidifier with appropriate capacity rather than a larger one that might be overkill for the entire house.

Consider Noise Level And Energy Efficiency

While size primarily affects capacity, also consider the noise level and energy efficiency of the dehumidifier. If the dehumidifier will be placed in a bedroom or living room, you might want to opt for a quieter model.

Energy-efficient units will not only save you money on your energy bills but also have a reduced environmental impact.

Choosing the right size dehumidifier involves a combination of factors including the size of the space (in square feet), the humidity levels, the condensation rate, problem areas, noise level, and energy efficiency.

Keep in mind that it’s almost always better selecting a dehumidifier that slightly exceeds your needs than one that falls short. An undersized unit may not effectively reduce humidity, while an oversized one might lead to excessive energy consumption,

By finding the right balance, you can create a healthier and more comfortable living environment in your home.

Matching Dehumidifier Capacity To Room Size

Choosing The Perfect Dehumidifier Size – Matching Capacity To Room Size

Dehumidifiers come in a range of sizes and various capacities, measured in pints of moisture per day they are able to remove from the air, and they fall into three main categories, tailored to different room sizes. 

Small Dehumidifiers

Compact yet efficient, small-capacity dehumidifiers typically hold around a pint of water and can extract half a pint daily. Ideal for RVs or small rooms, these units are designed to combat localized humidity issues.

30 Pint Dehumidifier

For spaces up to 2,000 square feet with moderate humidity levels, a 30-pint dehumidifier works well. However, if you’re considering a basement setting, where dampness is more prevalent despite similar dimensions, opting for a slightly larger model might be wise.

50 Pint Dehumidifier

In spaces up to 3,000 square feet or smaller spaces with higher relative humidity, a 40 to 50-pint dehumidifier is recommended.

These robust units excel at tackling damp environments. If your home is noticeably humid or shows signs of moisture-related issues, investing in a 40 or 50-pint model is a prudent choice.

70 Pint Dehumidifier

For sizable areas exceeding 3,000 square feet, especially damp basements or crawl spaces, the 70-pint large-capacity dehumidifier reigns supreme. Although they may come with a higher price tag, opting for the correct size dehumidifier is essential to effectively combat stubborn moisture problems.

Always The Right Size

Determining the size of dehumidifier you need involves considering multiple factors to ensure optimal performance and comfort. Calculate the square footage of the area you intend to dehumidify is the first, and perhaps most important step, as different models are designed for varying room sizes.

Also important are the relative humidity levels n your home and the condensation rate of the appliance.

Striking the right balance between capacity and size ensures a healthier living environment, with a slightly larger dehumidifier generally being preferable to an undersized one.

By tailoring the dehumidifier size to your unique requirements, you can effectively manage moisture, promote comfort, and enhance your overall well-being and quality of life.