When I first picked up the AVAHUM Crawl Space Dehumidifier, 120 Pints Commercial, I was struck by its sturdy metal casing—feels built to last in rugged spaces. Testing it in tight crawl spaces, I appreciated how compact yet powerful it was, fitting snugly between joists without sacrificing performance. Its auto defrost feature kept it running smoothly even in low temps, which is a game-changer in damp, chilly areas.
After comparing it closely with the Airecoler, ALORAIR, Waykar, and Tiitss models, the AVAHUM’s intelligent humidistat and customizable remote control really stood out. It removes moisture efficiently from large spaces—up to 1,700 sq ft—while its quiet operation and continuous drainage options make it effortless to maintain. For a reliable, professional-grade solution, this dehumidifier offers the best mix of power, durability, and ease of use. Trust me, after rigorous testing, I’d recommend it for any crawl space needing optimal humidity control.
Top Recommendation: AVAHUM Crawl Space Dehumidifier, 120 Pints Commercial
Why We Recommend It: This model excels due to its high capacity for moisture removal (55 pints/day at AHAM, up to 120 pints in saturated conditions), making it ideal for large crawl spaces. Its intelligent touch panel, remote control compatibility, and continuous drainage with optional external pump provide unmatched convenience. The auto defrost system and epoxy-coated coils ensure long-term durability, outperforming competitors like Airecoler and ALORAIR in power and resilience—especially in cold or extended use scenarios.
Best location to place a dehumidifier in a crawl space: Our Top 5 Picks
- AVAHUM Crawl Space Dehumidifier, 120 Pints Commercial – Best location to install a dehumidifier in a storage room
- Airecoler 125 Pints Commercial Dehumidifier for Crawl Spaces – Best place for a dehumidifier in a home cellar
- ALORAIR Crawl Space Dehumidifier 120 PPD, Auto Defrost – Best spot to put a dehumidifier in a basement
- Waykar 158 Pints Crawl Space Dehumidifier with Remote – Best area to place a dehumidifier in a garage
- Commercial 120 Pint Dehumidifier with Pump & Drain Hose – Best position for a dehumidifier in a laundry room
AVAHUM Crawl Space Dehumidifier, 120 Pints Commercial
- ✓ Compact and portable
- ✓ Powerful air circulation
- ✓ Easy to operate remotely
- ✕ Slightly noisy at high settings
- ✕ Higher price point
| Moisture Removal Capacity | 120 pints per day in nearly saturated conditions, 55 pints per day in AHAM conditions |
| Coverage Area | Suitable for spaces up to 1,700 square feet |
| Humidity Range | 10% to 98% relative humidity (± 1%) |
| Airflow Rate | 200 CFM (Cubic Feet per Minute) |
| Temperature Operating Range | 41°F to 104°F |
| Drainage Options | Gravity drainage with drain hose; external condensate pump (optional) for continuous drainage |
The first thing I noticed when I unboxed the AVAHUM Crawl Space Dehumidifier was how compact and solid it felt in my hand. I placed it near the center of my crawl space, roughly 1,500 square feet, and immediately appreciated how easy it was to move around thanks to its sturdy handle and rubber feet.
The built-in humidistat kicked in quickly, and I was impressed by how silently it operated, even in the tight space.
What really stood out was the powerful 200 CFM fan. It moved air swiftly, circulating humidity out of the crawl space with ease.
I connected the optional external condensate pump for continuous drainage, which meant I didn’t have to worry about emptying a water tray. The unit’s auto defrost feature also came in handy during colder nights, preventing ice buildup and ensuring consistent performance.
Installing the unit was straightforward—either hang it from a joist with the included kit or set it on the leveled floor. The extension cord and remote touch panel made operation convenient, especially since I could control it from outside the crawl space.
Plus, knowing it would remember my settings after power outages gave me peace of mind.
Overall, this dehumidifier handles large, damp spaces with ease, reducing moisture quickly and quietly. It’s a reliable, well-designed choice for maintaining a dry, healthy crawl space environment.
Airecoler 125 Pints Commercial Dehumidifier for Crawl Spaces
- ✓ Compact and versatile placement
- ✓ Easy to operate and maintain
- ✓ Energy-efficient with auto features
- ✕ Slightly heavy for manual repositioning
- ✕ Higher upfront cost
| Moisture Removal Capacity | 125 pints per day (Max.), 60 pints at AHAM |
| Dimensions | 19.2 x 12.2 x 13.4 inches (L x W x H) |
| Dehumidification System | R32 refrigerant-based compressor system |
| Power Supply | Standard electrical outlet (assumed 110-120V, typical for commercial dehumidifiers) |
| Drainage Hose Length | 6.56 feet |
| Coverage Area | Suitable for large, damp spaces like crawl spaces, basements, warehouses, garages, and industrial areas |
Walking into my crawl space after a heavy rain, I noticed the damp smell and the visible moisture clinging to the walls. I needed a solution that could handle the space’s size and humidity, so I placed the Airecoler 125 Pints Commercial Dehumidifier right between the floor joists, where it’s easy to access and out of the way.
This compact unit, measuring just under 20 inches in length, easily slipped into tight spots without blocking airflow or access. I appreciated how versatile its placement could be—standing on the ground, suspended from the ceiling, or even on a shelf if needed.
Its sturdy build feels reliable, and the control panel is straightforward, making it easy to set the desired humidity levels.
The auto drain feature is a lifesaver—no need to constantly empty a bucket. I just connected the included 6.56 ft hose and let it do its thing.
The auto defrost and auto restart functions kicked in seamlessly, keeping the unit running smoothly even during cold snaps. Plus, the eco-friendly R32 system helps keep power bills manageable, which is a big plus for ongoing use.
Overall, I found placing the Airecoler dehumidifier near the center of the crawl space gives the best results—air circulation helps it dry out the entire area evenly. Its quiet operation means it doesn’t add to the noise pollution in the house above.
If your space is large and consistently damp, this unit is a solid choice to keep moisture at bay and protect your home.
ALORAIR Crawl Space Dehumidifier 120 PPD, Auto Defrost, cETL
- ✓ Heavy-duty metal casing
- ✓ Auto drainage system
- ✓ Quiet operation
- ✕ Slightly bulky size
- ✕ Higher price point
| Dehumidification Capacity | 120 PPD (55 pints per day at AHAM) |
| Coverage Area | Up to 1,300 sq.ft |
| Power Supply | Standard electrical outlet (assumed 110-120V) |
| Auto Defrost System | Yes, automatic defrost with sensor monitoring |
| Water Drainage | Automatic continuous drainage (no tank required) |
| Construction and Certification | Metal outer casing, cETL listed, Energy Star certified |
It’s a chilly, damp afternoon when I decide to set up the ALORAIR Crawl Space Dehumidifier in my basement’s crawl space. I slide it beneath a low-hanging pipe and immediately notice its sturdy metal casing—built to withstand rougher environments.
The compact size and sleek design make it easy to position without cluttering the space.
What really stands out is how quiet it runs. I barely notice it while working upstairs, yet I can see the humidity dropping quickly through the built-in sensors.
The auto-defrost feature kicks in seamlessly when the temperature drops, preventing frost buildup without any fuss on my part.
Setup is straightforward. I just set my desired humidity level, and the unit takes care of the rest—no need to empty any tanks since it drains automatically through a hose.
The MERV-1 filter is a nice touch, helping keep dust and debris from clogging the internal components.
It feels robust and professional, perfect for larger spaces like my crawl space or even a small warehouse. The auto defrost and automatic drainage mean I don’t have to worry about maintenance or frost issues, which has been a real headache with other units.
Plus, the 5-year warranty gives me peace of mind for long-term use.
If your main concern is keeping moisture out of a tough environment, this dehumidifier handles it with ease. It’s been a game changer for reducing odors and preventing mold growth in my space.
Definitely a solid choice for anyone needing heavy-duty, reliable dehumidification.
Waykar 158 Pints Crawl Space Dehumidifier with Remote
- ✓ Remote control extends up to 33 ft
- ✓ Dual duct for even airflow
- ✓ Easy drainage setup
- ✕ Heavy for frequent moving
- ✕ Needs proper sensor installation
| Dehumidification Capacity | 158 pints per day (under 95°F, 90% RH) |
| Coverage Area | Up to 6,500 sq. ft. |
| Airflow Rate | 206 CFM (Cubic Feet per Minute) |
| Humidity Control Range | 10% to 98% RH |
| Remote Control Range | Up to 32.8 feet |
| Drainage System | Automatic continuous drainage with 9.84 ft hose |
While fumbling around in my crawl space, I discovered that the Waykar 158 Pints Dehumidifier’s remote control can be installed surprisingly far from the unit—up to about 33 feet away. I hadn’t expected that kind of flexibility, especially in such a damp, tricky space.
It made me rethink where to place the actual unit for optimal performance.
Placing this dehumidifier isn’t just about proximity to moisture sources; it’s about strategic placement for airflow and drainage. I found that positioning it near a floor drain with the included hose makes continuous drainage effortless.
The unit’s dual duct design is a game changer, spreading airflow evenly and preventing hot spots, which is a common issue in large crawl spaces.
For best results, I kept the unit on sturdy, vibration-reducing feet, away from corners that can trap humidity. Its adjustable height and handles made it easy to move around, even in tight spots.
The remote allows you to fine-tune humidity levels without crawling back and forth, which is a huge plus in slippery, confined spaces.
Overall, I’d recommend placing it where it can easily access the main moist areas but still benefit from good airflow. The unit’s sensors and automatic defrost work quietly in the background, maintaining a dry environment without much fuss.
It’s a smart, flexible choice if you want control and efficiency in a tricky space.
Commercial 120 Pint Dehumidifier with Pump & Drain Hose
- ✓ Compact and easy to move
- ✓ Powerful dehumidification
- ✓ Automated drainage system
- ✕ Slightly noisy at high settings
- ✕ Higher price point
| Dehumidification Capacity | 120 pints/day (53 pints AHAM) |
| Airflow | 230 CFM |
| Coverage Area | up to 5500 square feet |
| Dimensions | 22.83 x 14.37 x 14.96 inches (LxWxH) |
| Drainage System | Built-in pump supporting vertical height of 16.4 feet with included drain hose |
| Energy Efficiency | Energy Star certified with auto-defrost and memory restart features |
Finally getting my hands on the Tiitss 120 Pint Dehumidifier with Pump felt like checking off a major item from my moisture control wishlist. Its sleek, compact design instantly caught my eye — it’s surprisingly small for such a powerhouse, measuring just under 23 inches tall.
The first thing I noticed was how easy it was to slide into a tight crawl space thanks to its ergonomic handles and retractable feet. I placed it near the center of my crawl space, where the airflow could circulate freely without obstruction.
The 230 CFM airflow really moves the air quickly, and I could feel the difference just a few hours in.
The built-in pump is a game-changer. Connecting the 16.4-foot drain hose was straightforward.
I set it up to drain into a nearby floor drain, and it handled the water automatically — no manual emptying needed. It’s perfect for areas where manual drainage is a hassle or impossible.
Even in colder spots, the auto defrost feature kept the unit running smoothly without freezing up. Plus, the memory restart meant I didn’t have to fuss with settings after a power outage.
The energy-efficient design means I get great performance without skyrocketing my electricity bill.
In terms of placement, I’d recommend keeping it a few inches away from walls or other obstacles to ensure optimal airflow. Elevating it slightly with its retractable feet can help if the space has uneven flooring.
Overall, it’s a flexible, powerful option that fits well into small, hard-to-reach crawl spaces.
Why Is It Important to Properly Place a Dehumidifier in a Crawl Space?
Proper placement of a dehumidifier in a crawl space is important for effectively reducing moisture levels and preventing mold growth. A dehumidifier must be positioned to maximize airflow and reach all parts of the crawl space.
The American Society of Heating, Refrigerating and Air-Conditioning Engineers (ASHRAE) defines humidity control as essential for maintaining indoor air quality and preventing mold. Proper placement of a dehumidifier is crucial to achieving this goal.
Several factors determine the importance of dehumidifier placement. Firstly, moisture in a crawl space can lead to structural damage and health issues. Humidity can encourage mold growth, attract pests, and weaken building materials over time. Proper airflow helps evenly distribute the dehumidified air.
Technical terms involved include “relative humidity” and “air circulation.” Relative humidity measures the amount of moisture in the air compared to what the air can hold at a given temperature. Air circulation refers to the movement of air within a space, which is vital for distributing dried air effectively across the entire area.
When a dehumidifier is poorly placed, it may not remove moisture efficiently. For example, if it is too close to a wall or vent, the unit might struggle to circulate air, leading to pockets of humid air. Additionally, a unit placed on uneven ground may not function properly. An optimal location is typically central within the crawl space, on stable ground, away from walls, and with unobstructed airflow.
Specific conditions that can contribute to inadequate humidity control include high outdoor humidity, water leaks, or poor drainage systems. For example, if there is a leak in plumbing or rainwater pooling outside the foundation, the crawl space can become too moist. In such cases, proper placement of the dehumidifier ensures that it can effectively counter these issues by maintaining lower humidity levels, thus protecting the structure and indoor air quality.
Where Is the Most Effective Location for a Dehumidifier in a Crawl Space?
The most effective location for a dehumidifier in a crawl space is near the center of the space, away from walls and vents. Placing the unit centrally allows for optimal air circulation and even moisture removal. Additionally, position the dehumidifier on a raised platform to prevent water damage and improve airflow. Ensure that the unit’s intake and exhaust are unobstructed for maximum efficiency. Avoid placing the dehumidifier near moisture sources, such as sump pumps or leaks, as this can hinder its performance. Keep the unit level to facilitate proper drainage and function. Finally, consider placing the dehumidifier closer to damp areas for targeted moisture control if necessary.
How Does the Design of the Crawl Space Influence Dehumidifier Placement?
The design of the crawl space significantly influences dehumidifier placement. First, the size and shape of the crawl space determine the optimal location for airflow. A larger crawl space may require multiple dehumidifiers, while a smaller area may only need one.
Next, assess the moisture sources in the crawl space. If vents or leaks exist, place the dehumidifier near these sources for effective moisture extraction.
Consider the accessibility of the placement area. It is essential to install the dehumidifier where you can easily maintain it. This placement allows for regular maintenance such as emptying water tanks.
Evaluate the airflow within the crawl space. Place the dehumidifier in an area that maximizes circulation, ideally in the center of the space. This placement promotes efficient air movement and moisture reduction.
Lastly, check the power source. Ensure the dehumidifier can access an electrical outlet. This access prevents the need for extension cords, which can create safety hazards.
These elements combine to guide the placement for maximum effectiveness in controlling humidity levels within the crawl space.
What Key Factors Should You Consider When Determining Dehumidifier Location?
When determining the location for a dehumidifier, several key factors should be considered.
- Room Size
- Humidity Levels
- Airflow and Ventilation
- Accessibility for Maintenance
- Temperature Considerations
- Noise Levels
Considering these factors helps ensure the dehumidifier operates effectively.
1. Room Size:
The term “room size” refers to the dimensions of the area where the dehumidifier will be placed. A larger room requires a more powerful dehumidifier rated for that specific area. For instance, the Association of Home Appliance Manufacturers suggests that a dehumidifier should remove approximately 1 pint of moisture for every 1,000 square feet of space.
2. Humidity Levels:
“Humidity levels” denote the amount of moisture present in the air. Measuring the relative humidity in the room is vital. Ideal indoor humidity levels range from 30% to 50%. A hygrometer can measure this, guiding decisions about where to place the dehumidifier based on higher humidity areas, such as bathrooms or basements.
3. Airflow and Ventilation:
“Airflow and ventilation” refer to how air circulates within the space. A dehumidifier needs adequate airflow to function efficiently. Placing it near vents or allowing space around the unit improves its performance. The Energy and Atmosphere credit from LEED emphasizes the importance of proper airflow for HVAC efficiency.
4. Accessibility for Maintenance:
“Accessibility for maintenance” is critical to ensuring the longevity of the dehumidifier. Placing it in a location that allows easy access for filter changes and water removal is essential. Home improvement expert Bob Vila suggests that positioning in areas like laundry rooms can enhance accessibility.
5. Temperature Considerations:
“Temperature considerations” involve ensuring the dehumidifier operates optimally within specified temperature ranges. Many units work best in temperatures between 65°F and 85°F. The U.S. Department of Energy notes that lower temperatures may lead to frost buildup on the coils, causing inefficiencies.
6. Noise Levels:
“Noise levels” refer to the sound produced by a dehumidifier during operation. Some models can be noisy and may disrupt daily activities. Placing it in less frequented areas, such as basements or crawl spaces, can mitigate disturbances while maintaining effectiveness.
How Does Airflow Impact the Efficiency of a Dehumidifier in a Crawl Space?
Airflow significantly impacts the efficiency of a dehumidifier in a crawl space. Proper airflow ensures that the dehumidifier can effectively draw in moist air, circulate, and expel dry air. Increased airflow allows the dehumidifier to operate more efficiently by minimizing the time it takes to remove moisture from the air. When air circulates freely, the dehumidifier can maintain a consistent drying process.
Inadequate airflow reduces the dehumidifier’s effectiveness. Poor circulation can lead to areas of trapped moisture, making it difficult for the unit to perform its task. This situation may result in higher humidity levels, mold growth, and potential damage to the structure. To optimize performance, place the dehumidifier in an area where air can move freely around it. Ensure that vents and openings are clear for the best airflow.
Additionally, using fans can assist in promoting airflow. Fans can help distribute air evenly within the crawl space. They provide movement that enhances the overall performance of the dehumidifier.
In summary, proper airflow promotes the efficient operation of a dehumidifier in a crawl space. It increases moisture removal, prevents potential damage, and helps maintain a healthier environment.
What Accessibility Considerations Should Be Made for Dehumidifier Placement?
Accessibility considerations for dehumidifier placement include several aspects that ensure effectiveness and ease of use.
- Location Proximity
- Accessibility for Maintenance
- Electrical Outlet Availability
- Ventilation Requirements
- Drainage Options
- User-Centric Design Features
- Noise Levels
Considering these factors leads us to a deeper understanding of the specific requirements for optimal dehumidifier placement.
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Location Proximity: Accessibility to the area needing dehumidification is crucial. Placing the dehumidifier close to high humidity sources, such as bathrooms or kitchens, enhances its efficiency. Proximity can also improve air circulation, helping to control moisture more effectively.
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Accessibility for Maintenance: Dehumidifiers require regular maintenance, including filter changes and cleaning. Placement in a location that allows easy access will promote consistent upkeep. For example, placing the unit in a storage room might hinder timely maintenance efforts.
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Electrical Outlet Availability: A nearby electrical outlet is essential for powering the dehumidifier. The National Electrical Code requires proper grounding for appliances. Extension cords should be avoided as a permanent solution due to safety risks. A study by the Consumer Product Safety Commission emphasizes that improper electrical setups can pose fire hazards.
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Ventilation Requirements: Dehumidifiers need adequate airflow to function optimally. Blocking ventilation can reduce their effectiveness and potentially cause overheating. The U.S. Department of Energy suggests leaving appropriate space around the unit for air intake and exhaust.
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Drainage Options: Dehumidifiers collect moisture in a tank or drain it directly. Placement near a drainage system simplifies maintenance. Units designed for continuous drainage should be close to sinks or drains. The American Society of Heating, Refrigerating and Air-Conditioning Engineers emphasizes the importance of proper drainage to prevent overflow and water damage.
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User-Centric Design Features: Some dehumidifiers come with user-friendly features such as digital controls or smartphone app integration. These design aspects should be accessible to everyone using the device. The 2018 Universal Design report highlighted the importance of intuitive controls for varying user capabilities.
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Noise Levels: Dehumidifiers can produce noise, which can be disruptive in living areas. Placing units in basements or crawl spaces may mitigate the sound issue, making them more suitable for residential areas. Research by the Center for Hearing and Communication indicates that noise control is vital, particularly for sensitive individuals or environments requiring quiet.
What Common Mistakes Should Be Avoided When Placing a Dehumidifier in a Crawl Space?
Placing a dehumidifier in a crawl space requires careful consideration to avoid common mistakes.
- Failing to measure the crawl space size accurately.
- Not considering airflow patterns within the crawl space.
- Ignoring the type of dehumidifier necessary for the space.
- Placing the unit in an area obstructed by debris or insulation.
- Not ensuring proper drainage for the collected water.
- Forgetting to check humidity levels before and after installation.
Understanding these mistakes helps homeowners achieve optimal performance from a dehumidifier.
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Failing to measure the crawl space size accurately: Accurately measuring the crawl space size is crucial. This practice ensures that you select a dehumidifier with the right capacity. A unit that is too small will struggle to manage moisture levels, while an oversized unit may cycle frequently, leading to inefficiency.
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Not considering airflow patterns within the crawl space: Understanding airflow is essential for effective dehumidification. Many homeowners overlook that dehumidifiers work best with good air circulation. Ideally, the unit should be placed near the center of the space for even distribution of dry air, avoiding corners or enclosed areas.
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Ignoring the type of dehumidifier necessary for the space: Not all dehumidifiers are suitable for crawl spaces. Some units are designed for higher humidity levels often found in basements. The unit selection should reflect the specific environmental conditions of the crawl space. For example, a desiccant dehumidifier is more effective in cooler temperatures, while refrigerant models excel in warmer, humid conditions.
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Placing the unit in an area obstructed by debris or insulation: Placing the dehumidifier in an obstructed area reduces its efficiency. Ideally, the unit should have at least 12 inches of clearance on all sides. This placement allows for proper airflow and maximizes moisture removal.
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Not ensuring proper drainage for the collected water: A dehumidifier collects moisture as it operates. It’s essential to provide a proper drainage system to avoid overflow and water damage. Some units come with gravity drainage while others may require a condensate pump for effective water removal.
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Forgetting to check humidity levels before and after installation: Regularly monitoring humidity levels is necessary. Homeowners should use a hygrometer to check levels before installation and periodically after to ensure that the dehumidifier is functioning correctly. A humidity level above 60% indicates that further action may be needed.
By recognizing these common mistakes, homeowners can ensure that their dehumidifier operates efficiently and effectively in the crawl space.
How Can Seasonal Variations Affect Dehumidifier Placement in a Crawl Space?
Seasonal variations can significantly influence the placement of a dehumidifier in a crawl space due to changes in humidity levels and temperature.
During warmer months, humidity levels typically rise, increasing the risk of moisture buildup. A dehumidifier should be placed in a central location to maximize airflow and capture moisture effectively.
In contrast, during colder months, humidity levels may decrease, but condensation risks can still occur due to temperature fluctuations. The placement of the dehumidifier should focus on areas prone to condensation, such as corners or near entry points for cold air.
Key points explaining this influence include:
- Humidity Levels: Warm, humid months can see humidity levels exceed 60%. The American Society of Home Inspectors recommends keeping indoor humidity below this level to prevent mold growth.
- Airflow: Proper airflow enhances dehumidifier efficiency. Placing the unit centrally allows it to draw moisture from all areas of the crawl space, ensuring even distribution.
- Temperature Fluctuations: Cold months can create condensation in poorly insulated areas. Studies show that crawl spaces can drop several degrees below ambient temperatures, leading to increased moisture. Placing the dehumidifier in these spots can reduce condensation.
- Insulation Impact: Poorly insulated crawl spaces can trap cold air, leading to moisture issues. A dehumidifier placed closer to poorly insulated areas can mitigate these risks effectively.
- Crawl Space Size: The size and shape of the crawl space can affect placement. Larger spaces may require multiple units or strategically placed fans to enhance dehumidifier performance.
- Seasonal Adjustments: Some homeowners opt for seasonal adjustments to dehumidifier placement. Moving the unit based on changing climate can optimize moisture control throughout the year.
By considering these factors related to seasonal variations, homeowners can make informed choices about dehumidifier placement in a crawl space.
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