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Best 70 Pint Dehumidifiers for Large Basements

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Pull gallons of damp out of a large basement, fast.

Our Top Picks

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Model
Product Comparison Table
Features

Product Image of the DECIUU 5000 Sq.Ft Dehumidifier with Pump, 100 Pint, Smart Humidity Control
Best Features
DECIUU 5,000 Sq Ft Dehumidifier with Built-In Pump
  • Built-in drainage pump
  • 16.4 ft vertical lift
  • ENERGY STAR certified
Product Image of the AIRPLUS 70 Pint Dehumidifier with Drain Hose, 4500 Sq.Ft for Basement
Best Value
AIRPLUS 4,500 Sq Ft 70 Pint Dehumidifier
  • Four selectable modes
  • Covers 4,500 sq ft
  • Washable filter
Product Image of the AIRPLUS 5500 Sq.Ft Dehumidifier for Basement, 80 Pints Dehumidifiers for Home with Drain Hose, Quiet Smart Humidity Control for Bedroom, Bathroom with Auto Shut Off, Dry Clothes, 24H Timer
Best for Large Spaces
AIRPLUS 5,500 Sq Ft 70 Pint Dehumidifier
  • Covers 5,500 sq ft
  • Three fan speeds
  • Pump-ready drainage
Product Image of the Waykar 80 Pints 5000 Sq. Ft 2025 Energy Star Dehumidifier for Basement
Best Extra Capacity
Waykar 80 Pints Energy Star Dehumidifier
  • 80-pint rated capacity
  • ENERGY STAR certified
  • Drain hose and 1.14-gallon tank
Product Image of the Moiswell 70 Pints Commercial Dehumidifier with Drain Hose for Crawl Space
Best Portable
Moiswell Defender ME-7 Dehumidifier
  • Lightweight 40 lb build
  • Dual lifting handles
  • Continuous gravity drain

Our Review Criteria: A 70-pint label only means something when it is read against the 2019 Department of Energy test standard, so we started there. Moisture removal at realistic basement temperatures, rated coverage area, drainage options from gravity to continuous hose to built-in pump, noise, and build quality decided the rankings, and ENERGY STAR certification counted in a unit’s favor. Every pick was verified as available, and any discontinued recommendation was replaced with a comparable in-stock model rather than left as a dead listing.

Damp, clammy air in a basement or large living space usually means one thing, the room is holding more moisture than it can shed, and that is where mold, musty smells, and warped wood start. A 70-pint unit is built for exactly those bigger, wetter rooms, pulling water out fast enough to actually keep up.

This guide walks through what matters before you buy, like how a 70-pint model differs from a 50-pint one and whether you want a built-in pump or a separate condensate pump for continuous draining.

Every pick here is judged on real-world moisture removal, drainage options, and how easy it is to live with day to day, so you can match a unit to your space and stop babysitting the humidity.


70-Pint vs. 50-Pint Dehumidifiers

If you browse dehumidifiers online, you will see various capacity ratings. The most common comparison is between 50-pint and 70-pint models. Here is how they stack up. One point to settle first: in 2019 the Department of Energy started testing portable dehumidifiers at 65 degrees Fahrenheit instead of 80, which lowers the measured capacity. A unit that once rated 70 pints usually rates about 50 pints under the 2019 standard even though the hardware is identical, so many listings now show both numbers (1).

Efficiency and Speed

A 70-pint dehumidifier removes up to 70 pints of moisture from the air in a 24-hour cycle. These units are built for speed and heavy-duty moisture removal.

If you have a large, damp basement, a 70-pint unit works faster than a 50-pint model. The 50-pint unit removes 20 fewer pints per day, meaning it must run longer to achieve the same result. For severe humidity, the 70-pint is the superior choice.

Energy Consumption

Comparing energy usage is tricky because it depends on the specific engineering of the unit. Generally, larger dehumidifiers draw more power while running.

However, a 70-pint unit often finishes the job quicker than a smaller model. Once it reaches the target humidity, it shuts off or switches to fan-only mode.

A 50-pint unit might run continuously to keep up with a very damp space, ultimately using more electricity. Ideally, you should match the size to the room. Using a massive 70-pint unit in a tiny, slightly damp bedroom is overkill and inefficient.

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Price Points

Expect to pay more for a 70-pint unit. They utilize larger compressors and coils. However, the price gap varies by brand. Investing in the larger unit is often worth the upfront cost for the speed and coverage it provides.

Built-In Pump vs. Condensate Pump

When shopping for a 70-pint dehumidifier, you will see options with and without built-in pumps. This feature changes how you get rid of the water.

Units with a built-in pump can push water vertically. You can run a small tube from the unit up to a sink or out a basement window. This allows for continuous drainage without gravity.

Units without a pump rely on gravity or a bucket.

  • Bucket drainage: You must manually pull out the reservoir and dump it when it gets full. If you forget, the unit stops working.
  • Gravity drainage: Most units have a spout on the back. You can attach a hose, but the water must flow downhill to a floor drain.

Is a Built-In Pump Necessary?

If you have a floor drain, you do not need a pump; gravity works fine. If you rely on a bucket, a pump is a luxury that saves you from heavy lifting.

However, pumps add mechanical complexity. They can clog or fail over time. Many users prefer a simpler unit and, if necessary, buy a separate external condensate pump later.

Finding the Best 70-Pint Dehumidifier for You

The market is flooded with options. Here is a breakdown of the critical factors you need to consider before clicking “buy.”

Size and Placement

We know we want 70-pint capacity, but the physical dimensions of the box matter. These units are large appliances.

Check the measurements to ensure the unit fits your intended spot. You need clearance around the air intake and exhaust for it to work properly.

If you are placing it in a finished living room, look for a sleek, modern design. For basement use, aesthetics matter less than raw performance.

Portability

A 70-pint dehumidifier is heavy, often weighing over 40 or 50 pounds. You cannot easily carry it.

Ensure the model you choose has sturdy caster wheels. Handles are also a major plus, specifically indented side handles that make it easier to lift the unit over door thresholds or up stairs.

Key Features

Modern units come packed with tech. Here are the features that actually add value:

  • Humidistat: This built-in sensor measures air moisture. It allows you to set a target percentage (e.g., 45 percent), and the machine cycles on and off to maintain it.
  • Auto-restart: If your home loses power, this feature ensures the unit turns back on with your previous settings once electricity is restored.
  • Auto-shutoff: This safety feature turns the machine off when the bucket is full to prevent water from spilling onto your floor.
  • Full tank alert: A beep or light notifies you that the water reservoir needs emptying.
  • Clean filter alert: Dehumidifiers process a lot of air. A dirty filter restricts airflow. This alert reminds you to wash the filter for optimal performance.
  • Auto-defrost: In cooler basements (below 65°F), coils can freeze. Defrost mode detects ice and melts it automatically so the machine keeps working.

Ease of Use

You do not want to fight with your appliances. Look for a simple control panel with clear labels.

The water bucket design is critical. It should have a comfortable handle and a splash guard to prevent spills while you walk to the sink. A visible water level window is also helpful so you can check progress at a glance.

Filter access matters, too. You should be able to slide the filter out without taking the machine apart.

Reservoir Capacity

Do not confuse “70-pint capacity” (how much it removes in a day) with “tank capacity” (how much the bucket holds).

Most buckets hold between 1 and 2 gallons. A smaller tank means you will be emptying it multiple times a day if you don’t use the continuous drain hose. If you rely on the bucket, buy a unit with the largest tank possible.


Product Reviews

We compared the 70-pint dehumidifiers you can actually buy right now, weighing each on daily moisture removal, rated coverage, drainage flexibility, noise, and build quality. The five below cover the common situations: a feature-loaded pump unit, a carry-anywhere portable, a value pick, a model built for the largest spaces, and one with extra pint capacity in reserve.

DECIUU 5,000 Sq Ft Dehumidifier with Built-In Pump

Best Features

Our Rating4.25 / 5
Energy Efficiency
4.5 / 5
Noise Level
3.5 / 5
Moisture Removal Rate
4.5 / 5
User-friendliness
4.5 / 5
Total Rating
4.25 / 5

The DECIUU earns the features pick because it solves the problem that stalls most basement setups: where does the water go? Its built-in condensate pump pushes water up to 16.4 feet vertically, so you can drain into a sink, a window well, or an overhead utility tub without a floor drain. Rated for spaces up to 5,000 square feet, it pulls roughly 70 pints of moisture a day at the common 86 degree, 80 percent humidity benchmark, climbing toward 100 pints in saturated conditions. It also carries ENERGY STAR certification, which counts on a unit you may run for months at a stretch.

What We Like

Pump Drainage That Defies Gravity

The internal pump lifts condensate up to 16.4 feet, the feature that sets it apart from gravity-only rivals. If your only drain is a laundry sink across the room or a window above the unit, this model handles it hands-free.

Three Ways to Drain

Beyond the pump, you can collect water in the 1.45-gallon tank or run the included 6.56-foot hose to a floor drain. It even accepts a standard 3/4-inch garden hose for long, unattended stretches.

Set-and-Forget Humidity Control

You dial in a target between 35 and 80 percent and the unit cycles to hold it, then defrosts automatically when the coils ice up in a cool basement. That keeps it working in conditions where cheaper units quit.

Verified Efficiency

ENERGY STAR certification means the moisture per watt is measured against a federal benchmark, not just claimed on the box. On a long-running appliance, that is the durable efficiency signal.

What We Don't Like

The Pump Adds Complexity

A built-in pump is one more mechanical part that can clog or fail over the life of the unit. If you have a convenient floor drain, a simpler gravity unit may outlast it.

Plan for the Footprint

A 5,000 square foot rating means a large cabinet. Measure your spot and leave clearance around the intake and exhaust before you buy.

Product Specs

Room Coverage 5,000 square feet
Daily Moisture Removal Up to 70 pints (86F, 80% RH)
Drainage Built-in pump, up to 16.4 feet vertical
Reservoir Capacity 1.45 gallons
Humidity Range 35 to 80 percent

AIRPLUS 4,500 Sq Ft 70 Pint Dehumidifier

Best Value

Our Rating4 / 5
Energy Efficiency
4 / 5
Noise Level
3.5 / 5
Moisture Removal Rate
4 / 5
User-friendliness
4.5 / 5
Total Rating
4 / 5

The AIRPLUS 70-pint is the value pick: it covers a genuine 4,500 square feet and removes up to 70 pints a day without the premium of a pump-equipped model. Four selectable modes, including a dedicated dry-clothes mode and a quieter sleep mode, let one unit flex from laundry duty to overnight bedroom use. For most damp basements with a nearby floor drain, it does the core job without extras you may not need.

What We Like

Modes for Real Situations

Beyond standard dehumidifying, the dry mode speeds up indoor laundry and the sleep mode dials back noise and lighting overnight. The modes map to how people actually use these units rather than padding a spec sheet.

Strong Coverage for the Class

A 4,500 square foot rating handles most full basements, and the compressor pulls up to 70 pints a day to get there quickly.

Two Simple Drain Paths

Run the 3.9-foot hose for continuous gravity drainage, or use the tank with an auto shutoff that stops the unit before it overflows.

Low-Maintenance Filter

The filter slides out and rinses clean, so there are no recurring filter costs to budget for.

What We Don't Like

Small Tank

At 0.7 gallons the bucket fills fast if you skip the hose. Plan on continuous drainage for a very damp space.

Gravity Drainage Only

There is no built-in pump, so the drain has to sit at or below the unit.

Product Specs

Room Coverage 4,500 square feet
Daily Moisture Removal Up to 70 pints
Drainage 3.9 ft hose or tank
Reservoir Capacity 0.7 gallons
Modes Four (dehumidify, dry, sleep, fan)

AIRPLUS 5,500 Sq Ft 70 Pint Dehumidifier

Best for Large Spaces

Our Rating4 / 5
Energy Efficiency
4 / 5
Noise Level
4 / 5
Moisture Removal Rate
4.5 / 5
User-friendliness
4 / 5
Total Rating
4 / 5

When square footage is the problem, this AIRPLUS model has the most coverage in the lineup at 5,500 square feet. It removes up to 70 pints a day at the standard 86 degree, 80 percent humidity benchmark and offers three fan speeds to balance speed against noise, with a manufacturer-cited 36-decibel low setting. Three drainage paths, including pump-ready operation, let you tailor it to a sprawling, hard-to-drain basement.

What We Like

The Widest Coverage Here

A 5,500 square foot rating is the largest in this roundup, suited to open basements and large multi-room areas that smaller units cannot keep up with.

Three Fan Speeds

Low, medium, and high let you push hard when a space is soaked, then ease off to a quieter setting once humidity is under control.

Flexible Drainage

Choose manual emptying, continuous gravity drainage, or add an external pump for vertical lift; the pump is sold separately.

Quieter Low Setting

AIRPLUS cites a 36-decibel low mode, about the level of a quiet library, which helps if the unit shares space with a TV room or office.

What We Don't Like

Pump Costs Extra

Pump drainage is supported but the pump is not included, so budget for it if you need vertical lift.

Big Unit

The high coverage rating comes in a large cabinet that needs floor space and airflow clearance.

Product Specs

Room Coverage 5,500 square feet
Daily Moisture Removal Up to 70 pints (86F, 80% RH)
Fan Speeds Three
Drainage Manual, continuous, or pump-assisted
Defrost Automatic

Waykar 80 Pints Energy Star Dehumidifier

Best Extra Capacity

Our Rating4 / 5
Energy Efficiency
4 / 5
Noise Level
3.5 / 5
Moisture Removal Rate
4.5 / 5
User-friendliness
4 / 5
Total Rating
4 / 5

Why put an 80-pint unit in a 70-pint guide? Because headroom is useful. A dehumidifier that never has to run flat out reaches your target humidity sooner, and in a soaked basement the extra capacity is what lets it catch up instead of running all day. Waykar rates this one at 80 pints for spaces up to 5,000 square feet, and it is ENERGY STAR certified, which matters on an appliance you may leave running for months. It ships with a drain hose and a 1.14-gallon tank, so you can set it to drain continuously or empty it by hand.

What We Like

Capacity in Reserve

An 80-pint rating gives you more daily removal than anything else here. In a basement that stays wet through a humid summer, that margin is the difference between a unit that keeps up and one that runs nonstop.

Rated for Big Rooms

Coverage runs to 5,000 square feet, so it suits an open basement or a large multi-room area rather than a closet or a single bedroom.

Certified Efficiency

ENERGY STAR certification means the moisture removed per watt was measured against a federal benchmark, not just printed on the box. On a long-running appliance, that is the efficiency claim worth trusting (2).

Drain It or Empty It

The included hose lets condensate run straight to a floor drain for hands-off operation, and the 1.14-gallon tank is there when a hose is not practical.

What We Don't Like

Gravity Drainage Only

There is no built-in pump, so the drain has to sit at or below the unit. If your only outlet is a sink above the machine, the DECIUU pick handles that instead.

Read the Rating Honestly

The 80-pint figure is a saturation rating, not the 2019 Department of Energy number, so expect less on a cool basement day. Size the unit to the room, not to the headline.

Product Specs

Room Coverage 5,000 square feet
Rated Capacity 80 pints
Drainage Drain hose or water tank
Reservoir Capacity 1.14 gallons
Certification ENERGY STAR

Moiswell Defender ME-7 Dehumidifier

Best Portable

Our Rating3.75 / 5
Energy Efficiency
4 / 5
Noise Level
3.5 / 5
Moisture Removal Rate
3.5 / 5
User-friendliness
4 / 5
Total Rating
3.75 / 5

Most high-capacity dehumidifiers are back-breakers. The Moiswell Defender ME-7 is the exception, weighing about 40 pounds with two molded handles so one person can carry it down to a crawl space or up from a basement. It is ENERGY STAR certified and built with a metal cabinet and copper components aimed at hard-working spaces. Just match it to its real coverage: this is a focused unit for crawl spaces and smaller damp rooms, not a whole-basement workhorse.

What We Like

Actually Carryable

At roughly 40 pounds with two dedicated lifting handles, it moves between floors far more easily than the 50-plus-pound units in this class. That matters if you rotate it between a crawl space, a closet, and a bathroom.

Hands-Off Gravity Drainage

The included hose lets condensate run continuously to a drain, so you are not emptying a bucket. For a crawl space you rarely visit, set-and-leave operation is the whole point.

Built to Last

A metal housing and an upgraded copper-coil refrigeration system are aimed at damp, demanding spaces where plastic-bodied units degrade. ENERGY STAR certification backs the efficiency claim.

Clear, Simple Controls

A large display shows status at a glance, with a 24-hour timer and automatic defrost so it keeps running in cooler conditions.

What We Don't Like

Modest True Capacity

The 70-pint figure is a saturation rating. Under standard AHAM conditions it removes closer to 35 pints a day and covers about 1,000 square feet, so size up to another pick here for a large open basement.

No Internal Pump

Drainage relies on gravity, so you need a drain at or below the unit. There is no pump to push water upward.

Product Specs

Room Coverage 1,000 square feet
Daily Moisture Removal Up to 35 pints (AHAM)
Drainage Gravity drain hose
Weight 40 pounds
Certification ENERGY STAR

Product Comparison Chart

Product Best Room Coverage Daily Removal Drainage Auto Defrost
DECIUU Dehumidifier Features 5,000 sq ft Up to 70 pints Built-in pump Yes
AIRPLUS 4,500 Sq Ft Dehumidifier Value 4,500 sq ft Up to 70 pints Hose or tank Yes
AIRPLUS 5,500 Sq Ft Dehumidifier Large Spaces 5,500 sq ft Up to 70 pints Manual, hose, or pump Yes
Waykar 80 Pints Dehumidifier Extra Capacity 5,000 sq ft Up to 80 pints Hose or tank Yes
Moiswell Defender ME-7 Portable 1,000 sq ft Up to 35 pints Gravity hose Yes

Maintaining a 70-Pint Dehumidifier

To keep your unit running efficiently, regular maintenance is non-negotiable.

  • Clean the bucket: Wash the water reservoir every two weeks with warm water and a mild detergent. This prevents slime and mold buildup inside the tank.
  • Check the filter: Most units have a “clean filter” light. Vacuum the filter monthly or rinse it with cool water.
  • Inspect coils: Once a season, look at the coils behind the filter. If they are dusty, use a soft brush vacuum attachment to clean them. This improves energy efficiency.

Keep In Mind

Always dry the filter completely before reinstalling it. Using a wet filter can damage the motor or encourage mold growth inside the machine.

FAQs

Will a Dehumidifier Remove Mold?

No, a dehumidifier cannot kill or remove existing mold. However, it is the best tool for preventing new mold growth. By keeping humidity below 50 percent, you create an environment where mold spores cannot thrive (3).

Deal With Mold Professionally

If you see active mold growth, clean it immediately or hire a professional. A dehumidifier prevents the problem from returning but does not fix the damage already done (4).

Where Should I Place My Dehumidifier?

Place the unit in the center of the dampest room for the best airflow. Ensure there is at least 6 to 12 inches of clearance around the air intake and exhaust vents. Do not hide it behind curtains or furniture, as this restricts performance.

How Long Should a Dehumidifier Run per Day?

A dehumidifier should run as long as it takes to reach your target humidity level (usually 30% to 50%). In very damp basements, the unit may run for 12 hours a day or more. Using the “Auto” or “Smart” mode allows the machine to cycle on and off automatically as needed.

Is It Bad to Oversize a Dehumidifier?

Generally, no. A larger unit (like a 70-pint) will simply dry the room faster and run for shorter periods than a smaller unit. However, an excessively large unit in a tiny closet might cycle on and off too frequently (short-cycling), which can wear out the compressor.

Can One Dehumidifier Do a Whole House?

It depends on the layout. A 70-pint unit can handle a whole house if the floor plan is open and air circulates freely. However, if you have closed doors and multiple floors, you may need separate units for the basement and the upper levels.

How Many Square Feet Will a 70-Pint Dehumidifier Cover?

A standard 70-pint dehumidifier typically covers between 4,000 and 4,500 square feet. This varies based on ceiling height, initial moisture levels, and the temperature of the room.

Do I Need a Dehumidifier With a Built-in Pump?

Only if you cannot drain by gravity. A built-in pump pushes collected water upward, into a sink or out a window, so it helps when the unit sits below the nearest drain. If you have a floor drain at or below the unit, plain gravity drainage works fine and gives you one less part that can clog or fail.

What Does “70 Pint” Actually Mean?

The “pint” rating refers to the amount of water the unit can remove from the air in a 24-hour period under specific testing conditions. A 70-pint unit removes 70 pints (8.75 gallons) of water per day. Note that DOE testing standards changed in 2019, so some newer models might be labeled as “50-pint” (New Standard) while offering similar performance to older “70-pint” models.


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Headshot of Matthew Sullivan

About the Author

Matthew Sullivan

Matthew Sullivan is a technical writer specializing in HVAC, humidity, air purification, and mold prevention. His guides are grounded in the standards that define the field: EPA guidance on mold and moisture, AHAM and Energy Star ratings, and manufacturer engineering data. He works from those sources rather than marketing claims, which is what keeps the advice accurate and worth trusting. Matthew's strength is turning that technical detail into clear, straightforward guides and how-tos.