# 8 Best Commercial Dehumidifiers In 2020 (Based On Specs)

High 60%+ relative humidity can lead to all kinds of problems in any industry. Damp warehouses, offices, server rooms, and basements can cause stock damage in the short run, and integral damage in the long run (mold growth). The most effective to reduce air moisture from large square footage areas are powerful commercial dehumidifiers.

Commercial dehumidifiers are HVAC devices that use condenser and evaporator, powered by a compressor, in order to condense and remove indoor air humidity. The most powerful dehumidifiers can capture and pump out more than 20 gallons of water per day.

When looking for a new commercial dehumidifier, you have to check several specifications in order to guarantee you’ll get the best commercial dehumidifier for your situation. These specs include:

• Maximum capacity, measured at 90% humidity or at saturation.
• AHAM capacity, measured at 60-80% humidity by Association of Home Appliance Manufacturers.
• Consider the square footage. For a 2,000 sq ft area, you’ll need a stronger industrial dehumidifier than for 1,000 sq ft.
• Power, measured in Watts. Residential dehumidifiers are powered by 500W, commercial ones can exceed 1000W. We’ll also convert these kilowatt-hours (kWh) into dollars ($). • Energy efficiency, based on the coefficient of efficiency (COP). • Airflow, measured in CFM. • Noise levels, measured in decibels. It might sound a lot but figuring out these specifications can help you tremendously to make an educated choice between the best commercial dehumidifier brands such as COLZER and AlorAir. In order to help everybody who’s in the market for a commercial dehumidifier to get up to speed with the HVAC specification, we’ve prepared a short and to the point specs-based buying guide. After the guide, you’ll find a list of the best commercial dehumidifiers, based on these specs. We strongly recommend going through the buying guide first, and picking the commercial dehumidifier for your specific need later on. Table of Contents ## Commercial Dehumidifier Buying Guide (Short And To The Point) The guide is based on the commercial dehumidifier specifications. It’s comprised of 3 distinct topics, consisting of: 1. Capacity and square footage considerations. We’ll go through maximum and AHAM capacity, and see what all those 200PPD and 90PPD AHAM mean. In turn, we can estimate area coverage of commercial dehumidifiers with a given capacity. 2. Electricity and power. We’ll look at home many Watts, Amps, and Volts power these HVAC devices. More importantly, we’ll see how energy-efficiency comes into play when reducing the monthly electricity bill, based on performance (moisture extraction). 3. Secondary specifications. Obviously, the best commercial dehumidifiers should have the highest airflow and the lowest noise levels. However, the general rule is ‘the higher the airflow, the higher the noise levels’. We’ll look into what is a good airflow-noise levels compromise. Let’s start with the key specifications – capacity: ### Capacity (Max At 90%, AHAM At 60-80%, Square Footage) In short, the capacity tells us how much water per day a commercial dehumidifier can extract from indoor air. This is the most important number on the specification sheet. If you check the label on the commercial dehumidifier, the capacity specs will read something like ‘198PPD (Saturation), 90 Pints (AHAM)‘. So, which is the capacity, the 198 pints or 90 pints? It’s both. The capacity of a commercial dehumidifier depends on the initial relative humidity. That’s why we have two difference capacity metrics: 1. Maximum capacity: At very high humidity – something like 90% or at saturation levels (100%) – more water can be extracted from the air with greater ease. That’s because a dehumidifier works best at large relative humidity difference between the initial state – 90% in this situation – and final state (40%, or normal humidity). That’s a 50% drop. 2. AHAM Capacity: Measured at 60-80% relative humidity levels, the AHAM capacity is the more relevant one. A 90-pint commercial dehumidifier, for example, will have the AHAM capacity of 90 pints, while maximum capacity can be 150 pints. The humidity drop here is about 30%. You’ll see that some commercial dehumidifiers have a maximum capacity that is drastically bigger than their AHAM capacity. That means they are especially useful for a very damp industrial area; those with 80%+ relative humidity. Example: COLZER 232 has AHAM capacity of 110 pints but it’s max. capacity is incredible 232 pints. In other dehumidifiers, you won’t see much difference between AHAM and max. capacity. These are the best commercial dehumidifier for areas with elevated moisture levels (60-80% relative humidity). When figuring out how big a commercial dehumidifier we need, the question is usually formed in the following way ‘We have a 2,000 sq ft area we need to dehumidifier, how big a dehumidifier we need?’. We have a whole article about how to size your dehumidifier here. Here is a simplified commercial dehumidifier capacity table that gives you an idea of how big a commercial or industrial dehumidifier you need: Coverage Area Relative HumidityCommercial Dehumidifier Capacity 1000 sq ft 60-70% humidity65 Pint 1000 sq ft70-80% humidity75 Pints 1000 sq ft80-100% humidity80 Pints 1500 sq ft60-70% humidity100 Pints 1500 sq ft70-80% humidity110 Pints 1500 sq ft80-100% humidity120 Pints 2000 sq ft60-70% humidity130 Pints 2000 sq ft70-80% humidity150 Pints 2000 sq ft80-100% humidity160 Pints Even the most powerful commercial dehumidifiers have an AHAM capacity of 110 pints. If you need a higher capacity for several 1,000 sq ft of coverage area, you need to invest in more than 1 dehumidifier. Some brands such as XPOWER XD-125 offer a pack of 4 and a pack of 8 commercial dehumidifiers for this very reason. ### Power And Energy Efficiency (About$0.25 Per Gallon Of Extracted Air)

All that capacity is a function of power input. Commercial dehumidifiers draw up to 1,500W, they run on 120 V and 5-15 Amps. In the power order of electric machines, they are one of the HVAC devices that draws the least amount of energy.

For example, running a 500W dehumidifier for 1 hour will cost 7 cents. Obviously, if you have a 1,000W commercial dehumidifier, running it for 1 hour will cost 14 cents. It’s not a big expense.

However, if you’re running several 1,000W commercial dehumidifiers 24/7, the electricity cost can be significantly higher. In this case, and in all others, it does make sense to get the most energy-efficient commercial dehumidifier. The one that will give extract the biggest amount of moisture out of the air for the lower price.

The energy factor of commercial units falls between 1 L/kWh and 3 L/kWh. The unit for energy-efficiency of commercial dehumidifiers is L/kWh or liters per kilowatt-hour. A liter is a metric unit for volume. 1 liter equates to 2.11 pints of liquid. 1 gallon of water, for example, equals to 3.79 liters. kWh is a kilowatt-hour, a unit for the amount of electricity used.

In short, a 2 L/kWh energy-efficient dehumidifier has to use about $0.25 of electricity for every gallon of water extracted from the air (given US average kWh price of$0.1319). A commercial dehumidifier with higher energy efficiency with use less than that for per gallon, an inefficient one will use more than that.

If you want to make a smart long-term choice, go for a commercial dehumidifier with an energy factor of at least 2 L/kWh.

### Secondary Specs (High Airflow, Low Noise Levels)

A perfect commercial dehumidifier has a high airflow and low noise rates.

Here is how these perfect secondary metrics should look like:

• Highest airflow above 250 CFM (cubic feet per minute).
• Noise levels below 55 decibels.

It’s difficult to get both because, as a rule, increasing the airflow will increase the decibel levels. The best commercial dehumidifiers, however, can achieve a good airflow-noise ratio.

Based on these specifications, we have created a list of the top commercial dehumidifier on the market in 2020:

## List Of The Best Commercial Dehumidifiers In 2020

Commerical Dehumidifier:Important Metrics:Rating And Price:
#1 Aprilaire 1870 XL Pro (Best Commercial Dehumidifier In 2020)

Max Capacity: 250 Pints (31.25 Gallons per day)
AHAM Capacity: 130 Pints (16.25 Gallons per day)
Energy Factor (COP): 2.9 L/kWh
Noise: 50 dB
Room Coverage: 2,500 to 7,200 sq ft
Power: 996W (115V, 8.3 Amps)
Air Flow: 310 CFM
Weight: 113 lbs


#2 AlorAir Sentinel HDi90 Dehumidifier For Commercial Use (With Built-In Pump)

Max Capacity: 198 Pints (24.75 Gallons per day)
AHAM Capacity: 90 Pints (11.25 Gallons per day)
Energy Factor (COP): 2.88L/kWh
Noise: 58 dB
Room Coverage: 2,600 sq ft
Power: 640W (115V, 5.56 Amps)
Air Flow: 210 CFM
Weight: 78 lbs


#3 BlueDri BD-BD-130-BL Industrial Dehumidifier (Highest Airflow Of 410 CFM, Packs Of 4 Or 8)

Max Capacity: 225 Pints (28.125 Gallons per day)
AHAM Capacity: 105 Pints (13.125 Gallons per day)
Energy Factor (COP): 2.41 L/kWh
Noise: NaN
Room Coverage: NaN
Power: 860W (115V, 7.5 Amps)
Air Flow: 410 CFM
Weight: 97 lbs


#4 AlorAir Storm EGR Extreme 190PPD Commerical Dehumidifier With Condensate Pump (Most Robust Dehumidifier For Industrial Use)

Max Capacity: 190 Pints (23.75 Gallons per day)
AHAM Capacity: 85 Pints (10.625 Gallons per day)
Energy Factor (COP): 2.88 L/kWh
Noise: 55 dB
Room Coverage: Up to 2,300 sq ft
Power: 640W (115V, 5.5 Amps)
Air Flow: 210 CFM
Weight: 78 lbs


#5 MOUNTO 135 PPD (Most Portable Commercial Dehumidifier)

Max Capacity: 135 Pints (16.875 Gallons per day)
AHAM Capacity: 95 Pints (11.875 Gallons per day)
Energy Factor (COP): 2.85 L/kWh
Noise: NaN
Room Coverage: NaN
Power: 640W (115V, 5.56 Amps)
Air Flow: NaN
Weight: 81 lbs


### #5 MOUNTO 135 PPD (Most Portable Commercial Dehumidifier)

 Maximum Capacity At 90% rel. humidity: 135 Pints (16.875 Gallons per day) AHAM Capacity At 60-80% rel. humidity: 95 Pints (11.875 Gallons per day) Energy Factor (COP), Power: 2.85 L/kWh, 640W (115V, 5.56 Amps) Noise levels: NaN Coverage Area: NaN Air Flow: NaN Weight: 81 lbs

Instead of any specific specification, the first thing everybody notices in the MOUNTO commercial dehumidifier are the big wheels. MOUNTO is designed to be as movable as possible; despite 95 Pint AHAM capacity, it only weighs 81 lbs and can be easily moved from space to space.

The MOUNTO has a built-in pump that facilitates the drainage process. That’s exactly what you need if you’re looking for the most portable commercial dehumidifier.

This unit was designed to deal with 60-80% relative humidity. It’s AHAM capacity in this humidity range is 95 Pints (or 11.875 gallons) per day. It will do the job very well. However, at higher humidity, it only has a maximum capacity of 135 PPD. If you are looking to fight off an extremely damp space, the MOUNTO is not the best unit to do that.

The high 2.85 L/kWh energy-efficient is most welcome. This commercial dehumidifier needs only 640 W to run; with 220 V and 5.56 Amps powering it. The lower-than-standard price tag is also a welcoming sight.

### #8 XPOWER XD-125 Industrial Dehumidifier

 Maximum Capacity At 90% rel. humidity: 125 Pints (15 Gallons per day) AHAM Capacity At 60-80% rel. humidity: 76 Pints (9.5 Gallons per day) Energy Factor (COP), Power: 1.784 L/kWh, 840W (115V, 7.3 Amps) Noise levels: NaN Coverage Area: NaN Air Flow: 235 CFM Weight: 81 lbs

XPOWER XD-125 is another version of industrial-specific dehumidifier that you can buy in a pack of 4 or even 8. It has a modest AHAM capacity of 76 PPD and it is powered by 840 W.

Both these specs mean that the XPOWER XD-125 is not the most energy-efficient industrial dehumidifier. While most of the best units have an energy factor of about 2 L/kWh, the XPOWER XD-125 has an energy factor of only 1.784 L/kWh.

What is more, the 235 CFM airflow is not something to be proud of. For industrial use, it’s better to have a high airflow despite the higher noise levels. In construction or in a warehouse the decibel levels are not as important as performance.

XPOWER XD-125 is also one of the pricier industrial dehumidifiers. At a price tag of about \$1,300, this is quite an expensive unit, especially given the subpar specifications.

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