Last Updated: Sep 4, 2020 @ 1:52 pm.

What's the best commercial dehumidifier? Do you need a commercial dehumidifier, or would a residential-style model work just as well?

To ask, we interviewed seven contractors that use commercial dehumidifiers. Then we did 17 hours of research, comparing models and build-quality. What works best for flood restoration? Light industrial use in a warehouse? An indoor pool? Here are the ones we would recommend.

FYI: We've been rating and reviewing products like dehumidifiers and humidifiers since 1994. We don't take money or freebies from the brands we review—that keeps our reviews independent. Our work is 100% reader-supported!


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Best For Offices

Great for retail, warehouses
Super easy to use, this model impressed us with its quick turbo mode and drain hose outlet feature. Critics note it is louder than the competition and can get hot to the touch.
$239.99

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Best For Offices: Vremi 4,500 Sq. Ft. Dehumidifier Energy Star Rated for Large Spaces and Basements

When it comes to dehumidifiers, the basic difference between types is durability and capacity. Residential dehumidifiers typically are designed for smaller spaces and are made of mostly plastic parts. Design-wise, residential dehumidifiers are made to look more aesthetically pleasing than their commercial counterparts.

Commercial or industrial dehumidifiers, on the other hand, are made of more durable materials (steel) that are designed to withstand more rugged conditions (temperature swings, etc). Most of these dehumidifiers have larger capacities (that is, remove more humidity) than residential models. They are also louder.

So what are the best commercial dehumidifiers? The answer depends on your intended use. For light duty use (minor flood restoration, small office or warehouse), a top-of-the-line residential dehumidifier should do the trick.

More serious flood restoration projects or demanding environments (like an indoor pool) require a more robust solution. More on that in a second.

First, let’s go over our pick for light duty use—after speaking with contractors and doing 17 hours of research into different models, we think Vremi’s 4500 square foot dehumidifier is best.

Where would you use this dehumidifier? Offices, retail stores or other light commercial applications. Small warehouses would also work—especially if you had a drain so you could continuously run this unit.

Good news: this large-capacity dehumidifier combines both performance and value. It removes 50 pints of water from the air per day, lowering the humidity to comfortable levels in a short period of time. The tank holds 1.8 gallons of water.

Here’s more on why we recommend this model:

What We Liked

 Built-in wheels. You’d think that would be a standard feature on dehumidifiers for basements, but no. This model has wheels.

• Quickly lowered humidity. 

• Auto shut off when tank is full. 

• Drain hose outlet for continuous draining into a sink or floor drain.

• Turbo mode and auto defrost. The auto defrost is important, as ice buildup on the dehumidifier’s coils can cause the units to malfunction.

• Visible water level line on front of tank.

• Remembers settings after power outage.

What Needs Work

• Loud. 

• Tank fills up to top—and can spill when you open it. That is no fun!

• Can get hot to touch.

• Hose attachment could be tighter.

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Reliable Workhorse

Great for workshops, storage spaces
Reputable brand with good customer service. This model includes drain hose for continuous mode. LCD control panel is easy to use. Quiet. 24 hour on/off timer.
$210.79

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Reliable Workhorse: COLZER 70 Pints Dehumidifier

When it comes to dehumidifying light commercial areas like workshops or storage rooms, you need a reliable brand that will won’t konk out when you need it most. Even though Colzer’s 70 pint dehumidifier is designed more as a residential model than industrial, contractors we interviewed recommended the brand for its overall quality.

What We Liked

 Quiet. This dehumidifier would also work well in offices or retail stores.

• Drain hose included.

• Continuous mode enables unit to empty into a drain. Or if you don’t have a drain, the water can simply collect into the tank.

• Good customer service.

• LED control panel is easy to set.

• 24 hour on/off timer.

• Hidden casters + recessed handles = thoughtful design.

• Power outage memory function retains settings if loss of electricity.

What Needs Work

• Filters must be changed every to 2 to 4 weeks. 

• Heavy.

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Best Flood Cleanup

Rugged design good for industrial use
If you live a moist and cold climate, we'd recommend this model. Great for basements with "laundry dry" mode. 70 pint capacity, auto on/off time, includes drain hose.
$1,064.00

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Best Flood Cleanup: BluDri BD-76 Commercial Dehumidifier

Flood restoration requires a more beefy dehumidifier—and responding quickly to prevent mold and mildew is important. We interviewed seven contractors who do flood restoration and asked them what they’d recommend for the job. The most common answer: BluDri’s line of dehumidifiers . . . for this article, we’ll spotlight the BD-76,

What We Liked

• 150 pint per day. Yep, that is nearly 19 gallons of water. This is twice to four times the capacity of most residential dehumidifiers.

• Rugged design. This dehumidifier can work in construction sites.

• Long drain hose (included) and water pump allows for drainage.

• Auto restart if power failure.

• Works well for flood restoration for entire homes or large garages.

• Large, foam-filled wheels to move it around.

• Also good for warehouses or other industrial areas with more extreme environments.

What Needs Work

• Heavy! Yes, this dehumidifier weighs 81 lbs.! It isn’t easy to lug around.

• Control buttons could be more intuitive.

• Clear instructions would be most welcome!

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Best Auto Defrost

Works down to 41 degrees
If you live a moist and cold climate, we'd recommend this model. Great for basements with "laundry dry" mode. 70 pint capacity, auto on/off time, includes drain hose.

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Best Auto Defrost: Inofia 70 Pint Dehumidifier

One challenge for commercial humidifiers are damp and cold environments—some dehumidifiers don’t work well in those cases. If you have a basement in an office or warehouse in a cold climate, we’d suggest this model: Inofia’s 70 Pint Dehumidifier.

Made by the same company that also makes the well-reguarded Colzer dehumidifiers, this model works in areas up to 4000 square feet.

What We Liked

• Auto defrost mode. Can work down to 41 degrees.

• Moderate noise. It’s not the quietest model—but we think the noise level is reasonable, based on interviews we did with contractors who used this model.

• Good customer service.

• Easy set up.

• Digital control panel is easy to use.

• Laundry mode helps dry out wet clothes. The swinging louvers help this process.

• Auto restart if power goes out. That’s critical for use in commercial applications like warehouses.

• Easy to move around, with to recessed handles.

• Nice looking design with recessed handles makes it work both in commercial and residential applications.

What Needs Work

• Works best with drain hose. With just a 70 pint capacity (less than a gallon), this model works best in continuous mode . . . but that requires you to have a place to run the drain hose!

Why Trust Us

We’ve been rating and reviewing products like humidifiers and dehumidifiers since 1994. For this article, we interviewed seven contractors and did 17 hours of additional research to compare models and find the best for different applications.

Here’s another key point: we don’t take money from the brands we review. No free samples, no sponsors, no “partnerships.” Our work is 100% reader-supported.

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