Our Top Picks
- Large area coverage
- Tall design
- Large tank & drain option
- Smart features
- Built-in pump
- Compact size suits tight spaces
- Professional whole house dehumidifier
- Large area coverage
- Easy to operate
- Built-in condensate pump
- Runs down to 33.8°F
- Epoxy-coated coils
- Easy maintenance
- Automatic restart
- Quiet operation under 52 decibels
- 5,000 sq ft coverage
- Auto defrost
- Continuous hose drainage
Our Review Criteria: Whole house can mean two different machines, a ducted unit wired into your HVAC or a high-capacity standalone for a basement or crawl space, so we separated the two before comparing anything, because the right pick depends on which problem you have. Department of Energy test data framed the capacity claims: the 2019 standard rates output at 65 degrees Fahrenheit to match a real basement, which makes an old 70-pint unit roughly a 50-pint unit today. From there we judged moisture removal at basement temperatures, coverage for your square footage, drainage that fits your drain access, ENERGY STAR efficiency for round-the-clock running, and noise, and kept installation guidance in line with standard HVAC practice. Every unit named was confirmed as still sold, with anything discontinued swapped out.
Muggy air that clings to your skin in one room while another feels bone dry usually means your whole home has a moisture problem, not just a bad afternoon. A whole house dehumidifier evens that out at the source instead of leaving you to chase it room by room with a portable unit.
This guide breaks down the main types, the signs that tell you a home really needs one, and how to size a unit to your square footage and HVAC setup.
For the picks, we weighed the things that actually matter day to day: energy efficiency, drainage that fits your basement or crawl space, and how much work installation demands before it earns a spot on the list.
Types of Whole House Dehumidifiers
Yes, whole house dehumidifiers exist, but the term can be confusing. It usually refers to two different types of units.
First, you have ducted units. These connect directly to your home’s HVAC system (furnace or air handler). They treat the air as it cycles through your ducts, dehumidifying every room at once. This is the most effective solution for consistent control.
Second, you have large-capacity portable units. These are standalone machines powerful enough to cover large open floor plans, basements, or crawlspaces. While they plug into a standard outlet, they don’t integrate with your ductwork.
Signs You Need a Whole House Dehumidifier
Before you invest, you need to confirm that humidity is the actual culprit. Ideally, your indoor relative humidity should stay below 50 percent. If you see these signs, it is time to take action:
- Persistent musty smells: That damp, old-house smell usually signals mold or mildew hiding in walls, carpets, or ducts.
- Health flare-ups: High moisture allows dust mites and mold spores to thrive. This often leads to increased allergy symptoms, asthma attacks, or skin irritation like eczema (1).
- Structural damage: Warped wood floors, sticking doors, or rotting window sills often indicate long-term moisture exposure.
- Visible condensation: Water beads on windows, sweating pipes, or damp spots on ceilings are clear red flags.
How to Choose the Right Unit
Selecting the right dehumidifier prevents you from buying an underpowered unit that runs constantly or an overpowered one that cycles too frequently. Consider these factors:
Product Reviews
We analyzed build quality, moisture removal capacity, and ease of drainage to select the top units. Whether you need a professional HVAC-integrated system, a high-capacity standalone for a large basement, or a unit built to dry a damp crawl space, we have a pick for you.
Waykar 120 Pints Dehumidifier
Best for Apartments
The Waykar 120-Pint is a high-capacity standalone unit built for large open spaces or apartments where ductwork installation isn’t an option. It blends into modern decor better than industrial boxes, making it suitable for living areas.
It removes up to 120 pints (at saturation) and claims coverage up to 6,000 square feet under ideal conditions. It offers flexible drainage options and intelligent humidity control that adjusts fan speeds based on your environment.
What We Like
Massive Coverage for Open Floor Plans
If you have a large open-concept apartment or a sprawling basement, this unit moves enough air to make a difference. While 6,000 square feet is the theoretical max, it comfortably manages 2,500 to 3,000 square feet of real-world living space.
Sleek aesthetic
Most high-capacity dehumidifiers look like industrial appliances. Waykar designed this model with a slim profile and modern finish. You won’t feel the need to hide it in a closet, which improves airflow and efficiency.
Set-and-Forget Drainage
While it has a 1.14-gallon tank, you will rarely use it for whole-house applications. The unit shines when you connect the drain hose. The system auto-detects the hose and switches to continuous drainage, bypassing the bucket full sensor so it keeps running.
Intelligent Controls
You get a 24-hour timer and specific modes for different needs, including a laundry drying mode. The sensor monitors ambient humidity and cycles the compressor to maintain your target percentage.
What We Don't Like
Support Can Be Slow
The unit performs well, but some users report difficulty reaching customer service for warranty claims or troubleshooting.
Tank is Small
If you cannot use the hose drainage, the onboard tank is very small for a unit of this power. You will empty it frequently.
Product Specs
| Area Coverage | 6,000 square feet |
|---|---|
| Pints Per Day | 120 pints |
| Dimensions | 9.84 by 13.39 by 21.86 inches |
| Weight | 34 pounds |
| Warranty | Not specified |
Dri-Eaz LGR 7000XLi Dehumidifier
Best for Large Homes
The Dri-Eaz LGR 7000XLi is an industrial beast. It is designed primarily for water damage restoration, but many homeowners use it for massive basements or indoor pool rooms. It removes a staggering amount of water, up to 130 pints at AHAM and 235 pints at saturation.
It features a rugged, rotomolded shell and smart controls. If you have a serious moisture problem or frequent flooding, this unit dries structures faster than anything else on this list.
What We Like
Extreme Moisture Removal
This unit pulls moisture out of materials, not just the air. It is rated for 26,000 cubic feet, making it capable of handling large warehouses, garages, or entire open-concept floors.
Advanced LGR Technology
LGR (Low Grain Refrigerant) technology pre-cools the air intake, allowing the unit to continue removing water even when the air gets drier. Standard dehumidifiers stop being effective around 40% humidity; this one keeps going.
Ergonomic Design
Despite weighing over 100 pounds, it is easy to move. It balances perfectly on large semi-pneumatic wheels, and the handle is designed for easy tilting. It is also stackable for storage.
Smart Monitoring
The digital display provides inlet and outlet temperature and humidity readings in real-time. This lets you see exactly how well the machine is performing.
What We Don't Like
Very Loud
This machinery makes a loud humming noise and moves a lot of air. It is not suitable for living spaces where you watch TV or sleep.
Overkill for Most Homes
Unless you have a massive space or active water damage, this unit is likely too powerful and expensive for standard residential needs.
Product Specs
| Area Coverage | 26,000 cubic feet |
|---|---|
| Pints Per Day | 235 pints |
| Dimensions | 20 by 20 by 33.5 inches |
| Weight | 107 pounds |
| Warranty | Limited lifetime warranty (body); 6 years (compressor & coils); 1 year (parts & labor |
Aprilaire E80 Pro Dehumidifier
Best HVAC Integrated Unit
The Aprilaire E80 (formerly the 1850) is a true whole house dehumidifier. Unlike portable units, this machine installs directly into your ductwork to treat air for the entire home invisibly and silently.
Manufactured in the USA, it removes 80 pints of water per day (at AHAM standards) and is built with corrosion-resistant aluminum coils. If you want a permanent, hands-off solution, this is the gold standard.
What We Like
True Whole House Circulation
By connecting to your HVAC return and supply, the Aprilaire E80 dries the air in every room that has a vent. It eliminates the need for multiple portable units scattered around the house.
Set It and Forget It
Once installed, you rarely need to touch it. It drains automatically via gravity (no pump failure risks) and uses an onboard humidistat to maintain your exact humidity preference efficiently.
Superior Air Filtration
This unit doesn’t just dry the air; it cleans it. It accepts MERV 8 filters (washable or replaceable), which trap dust, pollen, and mold spores before they circulate back into your home.
American Build Quality
Aprilaire builds these units in Wisconsin. They use customized aluminum coils that resist the corrosion that kills cheaper imported dehumidifiers.
What We Don't Like
Professional Installation Required
This is not a plug-and-play device. You need to cut into your ductwork and wire it to your HVAC system. We strongly recommend hiring a licensed HVAC professional to ensure it works correctly.
High Upfront Cost
Between the unit price and installation labor, this is a significant investment compared to portable units. However, it adds value to the home.
Product Specs
| Area Coverage | 4,400 square feet |
|---|---|
| Pints Per Day | 80 pints |
| Dimensions | 34 by 15.42 by 15 inches |
| Weight | 63 pounds |
| Warranty | Five-year warranty |
AlorAir Storm LGR Extreme Dehumidifier
Best With Pump
The AlorAir Storm LGR Extreme is a commercial restoration unit that solves the one problem most crawl space and basement picks leave to you: getting the water out. It carries a built-in condensate pump, so it does not need a floor drain below it.
It is rated for up to 2,300 square feet and pulls 85 pints a day at AHAM conditions (180 pints at saturation), and AlorAir backs it with a six-year limited warranty.
What We Like
The Pump Solves Basement Drainage
Gravity drainage only works when there is a drain lower than the unit, which a crawl space rarely has. The built-in pump pushes condensate up to 14.7 feet vertically through a 19.6-foot hose, so you can send water to a sink, a window, or outside instead of building a slope for it.
Keeps Running in Cold Air
An unheated crawl space or basement sits well below living-room temperature, and a standard compressor frosts over and stalls there. This one is rated to operate from 33.8°F to 104°F with automatic defrost, so it keeps working through the cold months when the rest of the house still feels damp.
LGR Drying, Not Just Air Drying
Low Grain Refrigerant design pre-cools the incoming air, so the unit keeps pulling moisture after the air is already fairly dry, where a conventional dehumidifier stops doing much. That is what dries out framing and subfloor after a leak rather than only taking the edge off the air.
Built for Damp, Dirty Spaces
The coils are epoxy coated to resist corrosion in the wet, and a MERV 8 filter catches the dust and spores a crawl space kicks up before they reach the coil. It moves 210 cubic feet of air per minute, and two top handles make it manageable to drag through a hatch.
What We Don't Like
It Is a Job-Site Machine
This is restoration equipment, not a living-room appliance. It is loud, it is industrial-looking, and it belongs in a crawl space, a utility room, or an unfinished basement, not next to a bedroom wall.
Heavy for Its Size
At roughly 70 pounds in a compact body, it is dense. It is fine once you set it in place, but plan the route into the crawl space before you carry it.
Product Specs
| Area Coverage | 2,300 square feet |
|---|---|
| Pints Per Day | 85 pints (AHAM); 180 pints (saturation) |
| Dimensions | 22.8 by 13.7 by 17.3 inches |
| Weight | 70.5 pounds |
| Warranty | Six-year limited warranty |
Tosot 70-Pint Dehumidifier With Pump
Best for Townhouses
The Tosot 70-pint (50-pint DOE 2019 standard) is a reliable workhorse for townhouses or split-level homes up to 4,500 square feet. It balances power with quiet operation, making it tolerable in main living areas.
The standout feature here is the internal pump. This allows you to place the unit in a basement or lower level and pump the water vertically into a sink or out a window, solving difficult drainage issues.
What We Like
Internal Pump Adds Flexibility
Gravity drains limit where you can place a dehumidifier. The Tosot’s internal pump pushes water up to 15 feet vertically or horizontally. This lets you place the unit in the center of the room for better airflow while running the small drain tube to a distant sink.
Power Outage Memory
If your power flickers during a storm, you don’t want your dehumidifier reverting to default settings. The Tosot remembers your last setting and automatically resumes operation once power is restored.
Quiet Operation
At 48 decibels on low, this unit is quieter than a normal conversation. While you will hear the fan, it lacks the aggressive compressor rattle found in cheaper units.
Simple Maintenance
The filter is washable and easy to access. A light on the display reminds you to clean it after 250 hours of run time, ensuring you don’t choke the motor with dust.
What We Don't Like
Pump Setup Can Be Finicky
The pump connector requires a firm seating to engage. If you don’t push it in until it clicks securely, the pump won’t activate, and the bucket will fill up instead.
Long-Term Durability
Some users report the unit lifespan averages around 2 to 3 years of heavy use, which is typical for portable units but less than HVAC-integrated systems.
Product Specs
| Area Coverage | 4,500 square feet |
|---|---|
| Pints Per Day | 70 pints |
| Dimensions | 14.76 by 11.38 by 24 inches |
| Weight | 48 pounds |
| Warranty | One-year warranty |
DECIUU 100-Pint Dehumidifier
Best for Crawlspaces
The DECIUU 100-pint is a high-capacity standalone unit aimed at the damp spaces a whole-house plan has to fix: crawl spaces, basements, and garages up to 5,000 square feet. It needs no ductwork, so it goes to work the day it arrives.
It pulls up to 100 pints a day in saturated air (95°F and 90 percent humidity) and a more realistic 70 pints in a warm 86°F basement. Three drainage options and an Energy Star efficiency rating make it practical to run around the clock without watching a tank.
What We Like
Built for Damp Crawl Spaces and Basements
A crawl space is often the moisture source that quietly feeds humidity to the rest of the house. This unit is sized for that job, rated to hold up to 5,000 square feet to a set point and its high capacity, auto-defrost, and continuous drainage suit a damp basement or crawl space rather than a single room.
Continuous Drainage You Set Once
The 1.45-gallon tank handles light use, but in a crawl space you connect a hose and forget it. Water runs through the included hose or a standard 3/4-inch garden hose straight to a floor drain or sump, so you are not crawling in to empty a bucket.
Keeps Working in Cooler Air
Crawl spaces and basements sit colder than living areas, where many compressors frost over and stall. The auto-defrost system clears frost on its own and resumes, so the unit keeps pulling moisture through the cool shoulder seasons.
Efficient Enough to Run All Day
A whole-home moisture problem means long runtimes, so efficiency is what you actually pay for. The unit carries an Energy Star efficiency rating and an adjustable humidistat from 35 to 80 percent, so it holds your target and cycles off instead of running flat out.
What We Don't Like
No Built-In Pump
It drains by gravity, not a pump. That works when you can run the hose downhill to a floor drain or sump, but a deep crawl space with no low drain point needs a separate condensate pump to lift the water out. Plan your drain route before you buy.
Newer Brand, Shorter Coverage
DECIUU is a newer name without the long track record of commercial dehumidifier makers, and coverage runs up to about two years rather than the multi-year warranties heavier-duty units carry. Register it and keep the receipt.
Product Specs
| Area Coverage | 5,000 square feet |
|---|---|
| Pints Per Day | 100 pints |
| Dimensions | 14.38 by 8.65 by 24.09 inches |
| Weight | 33 pounds |
| Warranty | Up to two years |
| Product | Best | Area Coverage | Pints Per Day | Dimensions | Weight | Warranty |
|---|---|---|---|---|---|---|
| Waykar 120 Pints Dehumidifier | For Apartments | 6,000 sq ft | 120 | 9.84 x 13.39 x 21.86″ | 34 lbs | N/A |
| Tosot 70-Pint Dehumidifier | For Townhouses | 4,500 sq ft | 70 | 14.76 x 11.38 x 24″ | 48 lbs | One-year |
| DECIUU 100-Pint Dehumidifier | For Crawlspaces | 5,000 sq ft | 100 | 14.38 x 8.65 x 24.09″ | 33 lbs | Up to two years |
| Aprilaire E80 Pro Dehumidifier | Commercial Whole House Dehumidifier | 4,400 sq ft | 80 | 34 x 15.42 x 15″ | 63 lbs | Five-year |
| Dri-Eaz LGR 7000XLi Dehumidifier | For Large Homes | 26,000 cu ft | 235 | 20 x 20 x 33.5″ | 107 lbs | Limited lifetime |
| AlorAir Storm LGR Extreme Dehumidifier | With Pump | 2,300 sq ft | 85 (AHAM) | 22.8 x 13.7 x 17.3″ | 70.5 lbs | Six-year |
Installation Basics
If you choose a standalone unit, installation is as simple as plugging it in and attaching a hose. However, a true whole house unit requires HVAC integration.
Most homeowners install these units using a “dedicated return to supply” method. You install a dedicated return vent that feeds air into the dehumidifier. The dehumidifier dries the air and pushes it into your HVAC supply plenum.
This method allows the dehumidifier to run independently of your air conditioner. It discharges dry air directly into your home’s airflow, lowering humidity even when the AC isn’t running (2).
Hire A Pro
Installation Costs
Budgeting is key here. Portable units cost nothing to install. Ducted systems are an investment.
- Unit Cost: $1,000 to $2,000 for the dehumidifier itself.
- Labor & Materials: $500 to $1,500 depending on the complexity of your ductwork and electrical access.
- Total: Expect to spend between $1,500 and $3,500 for a fully installed professional system.
