5 Best 70 Pint Dehumidifiers in 2025

Excessive moisture wreaks havoc on homes, creating musty odors, mold growth, and structural damage. A quality 70 pint dehumidifier solves these problems by removing substantial amounts of water from the air daily. These powerful units handle large areas effectively while maintaining optimal humidity levels.

High-capacity dehumidifiers work differently than smaller models. They extract more moisture per hour and cover broader square footage. The 70 pint capacity means these units remove up to 70 pints of water from the air every 24 hours under specific conditions.

Basement moisture, crawl space humidity, and whole-home dampness require robust solutions. Standard small dehumidifiers struggle in these challenging environments. Professional-grade 70 pint models deliver consistent performance where other units fail.

Key Features That Matter Most

Moisture Removal Rate The actual pint rating indicates maximum water extraction under laboratory conditions. Real-world performance varies based on temperature, humidity levels, and air circulation. Quality units maintain steady extraction rates across different conditions.

Coverage Area Square footage ratings help determine proper sizing. Most 70 pint units handle 3,000 to 5,000 square feet effectively. Room layout, ceiling height, and moisture sources affect actual coverage.

Energy Efficiency Energy Star certification ensures lower operating costs. Efficient models use less electricity while maintaining performance. Smart controls and variable fan speeds improve energy consumption.

Drainage Options Built-in pumps eliminate manual emptying by pushing water upward through small hoses. Gravity drain connections allow continuous operation when floor drains are available. Large internal tanks provide backup collection.

Durability Features Commercial-grade construction withstands demanding environments. Automatic defrost prevents ice buildup during cold weather operation. Memory restart maintains settings after power outages.

Top 5 Best 70 Pint Dehumidifiers Reviewed

1. Waykar 70 Pint Energy Star Crawl Space Dehumidifier with Pump

Performance Excellence This Waykar model dominates large space moisture control with consistent 70 pint daily extraction. The unit maintains steady performance in temperatures as low as 36°F, making it ideal for cold basements and crawl spaces.

The integrated pump lifts water up to 16 feet vertically, eliminating drainage concerns in below-grade installations. Smart humidity control automatically adjusts operation based on ambient conditions, preventing over-drying while maintaining comfort.

Build Quality and Features Heavy-duty construction ensures reliable operation in challenging environments. The robust housing resists corrosion while internal components handle continuous operation without degradation.

Digital controls provide precise humidity setting from 35% to 85% relative humidity. The LED display shows current conditions and operational status clearly. Timer functions allow scheduled operation for energy savings.

Coverage and Efficiency This model effectively treats spaces up to 5,000 square feet with Energy Star certification ensuring efficient operation. The variable speed fan adjusts automatically based on conditions, reducing energy consumption during light load periods.

Continuous drainage capability eliminates maintenance concerns. The unit operates quietly despite powerful extraction, making it suitable for occupied areas.

Warranty and Support The impressive 5-year quality coverage demonstrates manufacturer confidence. Comprehensive warranty protection covers parts and labor, providing peace of mind for this significant investment.

Pros:

• Handles 5,000 square feet effectively
• Built-in pump for versatile installation
• Energy Star certified efficiency
• 5-year comprehensive warranty
• Smart humidity control system

Cons:

• Higher initial cost than basic models
• Requires regular filter maintenance
• May be oversized for smaller spaces

2. AIRPLUS 4,500 Sq.Ft 70 Pint Dehumidifier with Dual Protection

Smart Operation Technology The AIRPLUS model features four intelligent operating modes that adapt to changing conditions automatically. These modes optimize performance while minimizing energy consumption based on real-time humidity readings.

Dual protection systems prevent damage from power fluctuations and operational stress. The unit monitors internal conditions continuously, shutting down safely when problems arise.

Advanced Climate Control Digital humidistat maintains precise humidity levels between 30% and 80%. The system responds quickly to changes, preventing humidity spikes that encourage mold growth.

Built-in defrost function operates automatically when temperatures drop below optimal ranges. This prevents ice formation that reduces efficiency and potentially damages components.

User-Friendly Design The included drain hose enables continuous operation without tank emptying. Multiple drainage options accommodate different installation requirements.

The 24-hour timer allows programmed operation cycles. This feature reduces operating costs by running the unit during off-peak electricity rates or when maximum efficiency is needed.

Installation Flexibility Compact design fits into tight spaces while maintaining full performance. Sturdy wheels enable easy repositioning for optimal airflow or maintenance access.

The efficient design handles 4,500 square feet effectively without excessive noise levels. Operation remains quiet enough for basement workshops or recreation areas.

Pros:

• Four smart operating modes
• Dual protection safety systems
• 24-hour programmable timer
• Quiet operation design
• Effective 4,500 square foot coverage

Cons:

• No built-in pump for upward drainage
• Limited warranty compared to premium models
• Requires level installation surface

3. 70 Pints Commercial Dehumidifier with Pump – Energy Star Certified

Commercial-Grade Performance This unit delivers consistent commercial-level moisture extraction designed for demanding applications. The robust construction handles continuous operation in harsh environments where residential units fail.

Energy Star certification ensures efficient operation despite powerful performance. The unit maintains optimal extraction rates while consuming minimal electricity compared to non-certified alternatives.

Integrated Pump System The built-in condensate pump eliminates gravity drainage limitations. Water pumps upward through small diameter tubing to distant drain locations, enabling flexible installation options.

Automatic pump operation requires no user intervention. The system activates when internal tank reaches capacity, ensuring continuous operation without overflow risks.

Professional Installation Features Heavy-duty components resist corrosion and wear from extended operation. The unit operates reliably in temperature ranges that challenge lesser models.

Automatic defrost prevents ice buildup during cold weather operation. This feature maintains consistent performance when temperatures drop below normal ranges.

Maintenance and Reliability Easy-access panels simplify routine maintenance tasks. Filter changes and coil cleaning require minimal time and tools.

Memory start function restores previous settings after power interruptions. This eliminates manual restart requirements, ensuring continuous protection.

Pros:

• Commercial-grade construction quality
• Energy Star certified efficiency
• Built-in condensate pump included
• Automatic defrost operation
• Memory start after outages

Cons:

• Industrial appearance may not suit residential decor
• Heavier weight complicates moving
• Higher noise levels than residential models

4. AIRPLUS 70 Pints Dehumidifier for Home with Intelligent Humidistat

Whole-Home Moisture Management This AIRPLUS model excels at whole-home humidity control with 4,500 square foot coverage capability. The unit maintains consistent comfort levels throughout large residential spaces.

Intelligent humidistat technology responds automatically to changing conditions. The system prevents over-drying while maintaining optimal humidity for health and comfort.

Continuous Operation Design Included drain hose enables unattended operation for weeks without maintenance. The continuous drainage system prevents tank overflow while eliminating manual emptying requirements.

Large internal tank provides backup collection when continuous drainage is unavailable. The generous capacity reduces emptying frequency during portable operation.

Versatile Room Applications The unit adapts to various installation locations including basements, bathrooms, bedrooms, and large living spaces. Quiet operation makes it suitable for occupied areas.

Compact footprint fits into tight spaces without blocking walkways or storage areas. Built-in handles and wheels simplify repositioning for seasonal use or maintenance.

Advanced Controls Digital display shows current humidity levels and operational status clearly. Simple controls allow precise adjustment without complex programming.

Multiple fan speeds accommodate different extraction needs and noise preferences. Lower speeds provide quieter operation while higher speeds maximize moisture removal.

Pros:

• 4,500 square foot coverage area
• Intelligent humidistat control
• Continuous drainage capability
• Suitable for multiple room types
• User-friendly digital controls

Cons:

• No integrated pump for upward drainage
• Limited temperature range compared to commercial units
• Requires regular filter cleaning

5. ALORAIR Crawl Space/Basement Dehumidifier 70 Pint with Pump

Specialized Crawl Space Design ALORAIR engineers this model specifically for crawl space and basement applications. The unit operates effectively in confined spaces with limited air circulation.

Compact design fits into tight crawl space areas while maintaining full 70 pint extraction capacity. The low profile accommodates spaces with restricted height clearances.

Professional-Grade Components Commercial construction ensures reliable operation in demanding environments. Heavy-duty components resist moisture damage and corrosion from extended exposure.

The unit operates effectively in temperatures down to 33°F, making it suitable for unheated spaces. Cold weather performance exceeds most residential models significantly.

Integrated Pump Performance Built-in condensate pump lifts water up to 16 feet vertically through small tubing. This eliminates gravity drainage requirements that limit installation locations.

Automatic pump operation activates when tank reaches capacity, preventing overflow damage. The system operates quietly without disturbing occupied areas above.

Smart Operational Features Memory start function restores settings automatically after power outages. This eliminates manual restart requirements for remote installations.

Energy Star certification ensures efficient operation despite powerful performance. The unit minimizes operating costs while maintaining consistent moisture extraction.

Coverage and Efficiency The unit effectively treats up to 1,000 square feet of challenging crawl space or basement area. Concentrated performance handles high humidity conditions that overwhelm standard units.

Automatic defrost prevents ice formation during cold weather operation. This maintains consistent performance when temperatures fluctuate seasonally.

Pros:

• Designed specifically for crawl spaces
• Up to 1,000 square feet coverage
• Built-in pump for remote drainage
• Energy Star certified efficiency
• Memory start function

Cons:

• Limited coverage compared to whole-home units
• Higher cost per square foot of coverage
• Requires professional installation in some applications

Complete Buying Guide for 70 Pint Dehumidifiers

Determining Proper Size Calculate actual square footage of the area requiring moisture control. Include connected spaces where air circulates freely. High ceilings and open floor plans increase effective volume requiring larger capacity.

Consider moisture sources like cooking, bathing, laundry, and seasonal factors. Spaces with multiple moisture sources need higher capacity units. Concrete floors and walls add moisture load through vapor transmission.

Climate Considerations Cold weather performance varies significantly between models. Units operating in unheated spaces need low-temperature capability with automatic defrost features.

Humid climates require continuous operation during peak seasons. Energy efficiency becomes crucial for units running constantly. Variable speed controls reduce operating costs during moderate conditions.

Installation Requirements Electrical requirements include dedicated 115V circuits for most models. Some high-capacity units need 20-amp circuits instead of standard 15-amp service.

Drainage options affect installation complexity and cost. Built-in pumps provide flexibility but add initial cost. Gravity drainage works when floor drains are available at proper elevations.

Operating Cost Analysis Energy Star certified models reduce electricity consumption significantly. Calculate operating costs based on local utility rates and expected run time.

Maintenance costs include filter replacements and periodic coil cleaning. Quality units require less frequent service, reducing long-term ownership costs.

Professional vs. DIY Installation Most units install easily with basic tools and electrical knowledge. Heavy models may require assistance for positioning and leveling.

Permanent installations with hard-wired drainage connections may require professional installation. Local codes sometimes require permits for electrical or plumbing modifications.

Essential Maintenance Tips for Optimal Performance

Regular Filter Care Clean or replace filters every 30-60 days depending on air quality and usage intensity. Dirty filters reduce airflow and extraction efficiency significantly.

Washable filters save money but require thorough cleaning and complete drying before reinstallation. Disposable filters ensure consistent performance but add operating costs.

Coil Cleaning Procedures Clean evaporator and condenser coils annually or when visible dirt accumulates. Dirty coils reduce efficiency and can cause premature failure.

Use soft brushes and approved coil cleaners to remove dirt without damaging delicate fins. Rinse thoroughly and ensure complete drying before operation.

Drainage System Maintenance Inspect and clean drain lines quarterly to prevent clogs. Mineral deposits and algae growth can block drainage, causing overflow damage.

Test pump operation monthly on units with integrated pumps. Ensure proper water flow and listen for unusual pump noises indicating potential problems.

Environmental Considerations Position units away from direct sunlight and heat sources that affect efficiency. Ensure adequate clearance around air intakes and outlets for proper airflow.

Level installation prevents vibration and ensures proper condensate drainage. Adjust leg levelers or add shims to eliminate rocking or tilting.

Troubleshooting Common Issues

Reduced Performance Problems Check filter condition first when extraction rates decline. Dirty filters cause most performance problems in well-maintained units.

Verify proper humidity settings and ensure doors/windows remain closed during operation. Air leaks reduce efficiency and increase operating costs significantly.

Unusual Noise Diagnosis Rattling sounds often indicate loose panels or debris in fan blades. Tighten screws and remove any foreign objects carefully.

Grinding noises may indicate bearing wear or motor problems requiring professional service. Discontinue operation until repairs are completed.

Drainage System Issues Overflow problems usually result from clogged drain lines or failed pumps. Clear blockages or test pump operation to identify causes.

Continuous pump cycling indicates possible air leaks in drain lines or pump valve problems. Check connections and replace damaged components.

Energy Efficiency and Cost Savings

Understanding Energy Ratings Energy Star certification ensures units meet strict efficiency standards. Certified models use 15-20% less electricity than standard units while maintaining performance.

Compare energy factor (EF) ratings between models. Higher EF ratings indicate better efficiency, reducing operating costs over the unit’s lifespan.

Smart Operation Strategies Use programmable timers to operate units during off-peak electricity rate periods. This reduces operating costs significantly in areas with time-of-use pricing.

Set humidity levels between 45-55% for optimal comfort and efficiency. Higher settings reduce operating time while maintaining mold prevention benefits.

Seasonal Adjustments Reduce operation during low-humidity winter periods when heating systems dry indoor air naturally. Monitor humidity levels to prevent over-drying damage.

Increase capacity during peak summer humidity periods. Multiple units may be needed temporarily during extreme weather conditions.

Health Benefits of Proper Humidity Control

Mold Prevention Maintaining humidity below 60% prevents most mold species from growing indoors. Quality dehumidifiers provide consistent control that eliminates mold food sources.

Existing mold stops growing when humidity drops below growth thresholds. However, remediation may be required for established mold colonies.

Indoor Air Quality Improvement Proper humidity reduces dust mite populations significantly. These allergens thrive in high humidity conditions that quality dehumidifiers eliminate.

Reduced humidity prevents musty odors caused by mold, mildew, and bacterial growth. Fresh air quality improves dramatically with consistent moisture control.

Structural Protection Excess moisture causes wood rot, metal corrosion, and concrete deterioration. Proper humidity control prevents expensive structural damage over time.

Paint peeling, wallpaper bubbling, and floor warping result from high humidity conditions. Consistent moisture control prevents these costly problems.

Final Recommendations

The Waykar 70 Pint Energy Star model with pump offers the best overall value for large space applications. Its 5,000 square foot coverage, built-in pump, and 5-year warranty justify the premium price for serious moisture control needs.

Budget-conscious buyers should consider the AIRPLUS models for reliable performance at lower initial cost. These units provide solid moisture control without premium features like integrated pumps.

Commercial applications benefit from the Energy Star certified commercial model with robust construction and continuous operation capability. The industrial design suits demanding environments requiring reliable performance.

Crawl space applications work best with the ALORAIR specialized model designed specifically for confined spaces. The compact design and powerful pump make it ideal for difficult installation locations.

Consider your specific needs, budget, and installation requirements when making the final decision. Quality 70 pint dehumidifiers represent significant investments that provide excellent returns through improved comfort, health, and property protection.

Proper sizing ensures optimal performance and energy efficiency. Oversized units cycle frequently, reducing efficiency and component lifespan. Undersized units run continuously without achieving desired humidity levels.

Professional installation may be worth the additional cost for permanent installations or complex drainage requirements. Proper installation ensures optimal performance and prevents costly problems later.