What Size Dehumidifier Is Best For Basements?

As useful and precious as they are, basements are notorious for one thing: being too humid. That’s why many homeowners buy dehumidifiers. 

But before you make your purchase, what size dehumidifier do you need for your basement? The answer depends on several factors, the most important being the size of your basement. The average basement size in the U.S varies from 500 to 1,500 sq ft. So you have to choose between a small 20-30 PPD dehumidifier or a larger 100 PPD model.

What To Consider When Choosing The Right Size Dehumidifier For A Basement

The size of your basement is the principal factor when it comes to deciding what size dehumidifier to get, but you also have to consider factors like the level of humidity in the basement and the ceiling height of the basement. 

Here are four steps to determine what size dehumidifier for a basement

1. If you have a small basement (for example, 500 sq. ft.), then getting a small dehumidifier (20-30 PPD) will be more than enough. 
2. However, if you have a big basement (for example, 2000 sq. ft.), you need to get a more powerful dehumidifier (preferably, at least 100 PPD).
3. If you live in a more humid area, the humidity levels in your basement will be higher. This is especially true if there is no ventilation in your basement. In this case, it is advisable to go for a more powerful dehumidifier, even  
4. Finally, higher ceilings mean more air volume, which means more air that needs to be dehumidified. In other words, you need a bigger/more powerful dehumidifier. 

2 Best Dehumidifiers For Big Basements

Determining what size dehumidifier you need for your basement is just the first step in deciding the best dehumidifier for your basement. For a larger basement, you need a dehumidifier capable of removing at least 145 pints of moisture every day. 

Here are our top picks for you:

1. CREWORKS Commercial Dehumidifier, 145 PPD with Water Pump for Basement

This dehumidifier is built for large areas from 800 to 2000 sq. ft., and it can remove up to 145 pints of moisture per day. It is a great way to keep basements, crawl spaces, and garages dry and odor-free:

2. CREWORKS 180 PPD Commercial Dehumidifier with Built-in Pump & Hose for Drainage

For basements from 700 to 7500 sq. ft., this dehumidifier removes up to 180 pints of moisture per day. With upgraded coils and a built-in drain pump with a 13 ft. hose, it offers powerful moisture control:

3 Tips for Buying the Best Dehumidifier for Basement

When choosing a dehumidifier for a large basement, focus on the specs that truly matter. 

1. Capacity of 100+ pints per day

First, look for a capacity of 100 pints per day or higher. This ensures the unit can handle high humidity levels across a wide area, especially in basements over 1,500 sq. ft.

2. Built-in pumps or continuous drainage options are also important. 

Manually emptying the water tank isn’t practical for large, damp basements. To avoid that, choose a model that can auto-drain through a hose or built-in pump to maintain consistent performance without the hassle.

3. Finally, go for a dehumidifier with digital controls. 

This allows you to set your desired humidity level, typically around 45–50% for a healthy basement environment, and lets the machine maintain it automatically.

In short, the best dehumidifier for a big basement combines high capacity, fast airflow, smart drainage, and precise control. These specs ensure it does more than just run, it actually solves your moisture problem.

Why Should You Get a Dehumidifier for Your Basement

A dehumidifier takes away moisture, which explains why they are crucial for basements. Given that basements are below the ground level, they naturally attract moisture. Also, most basements are poorly ventilated, which also increases the moisture levels. This is what makes basements feel so musty and moldy. 

If you want to store your belongings in the basement, such as clothes, old furniture, or hobby items, these belongings can easily get damaged by all that excess moisture. Additionally, even if you keep your basement empty, this moisture can damage walls, wood, and even cause structural damage over time. 

And let’s not forget about the health issues. The humid and musty air from your basement can seep into your home and cause allergies and asthma attacks. 

That’s why you should invest in a dehumidifier - to prevent damage and health issues, and make your basement a livable and pleasant place. 

Related: What Does a Dehumidifier Do?

Symptoms of Too Much Moisture In Your Basement

The first sign of too much moisture in a basement is a moldy and musty smell. Normally, basements shouldn’t smell that way. Apart from the smell, the air feels too heavy.

Then, take a look at the walls. Do they look damp? Do you see mold? Are the walls warped? All these are clear signs that your basement has been too humid for too long. 

Sure, you can try to ventilate it more or apply mold-resistant wall paints, but getting a dehumidifier is the most effective way to get rid of the mold.

Related: Does a Dehumidifier Cool a Room?

Why Choose A COZ-Recommended Dehumidifier?

If you are looking for top-performing commercial dehumidifiers with built-in pumps for your basement, crawl space, or warehouse, go to CO-Z Palace. Their highly rated units are engineered to eliminate excess humidity and banish musty smells, leaving your space dry and comfortable. 

With all that being said, it is obvious why CO-Z is where you can find the best dehumidifier for a basement!