Creality Filament Dryer Box 4 Spools Space Pi X4
4.6Editor score
Holds four standard spools easily
Dual heating chambers for speed
Precise touch UI control
In this guide
Filament dryers are essential for maintaining print quality by removing moisture that causes stringing and weak adhesion. Selecting the right unit ensures your spools remain dry and ready for use whenever you need them.
We evaluated ten top-rated models based on capacity, heating technology, temperature control, and ease of use. Our analysis covers diverse needs from budget-friendly storage to high-performance dual-chamber drying systems.
Each pick highlights key features, pros, and cons to help you match a dryer to your specific filament types. Note that availability and costs may vary over time so check current listings before buying.
Top 3 Picks for Best Filament Dryer Box
SUNLU Filament Dryer Box 2026 New Upgrade S1 Plus
4.3Editor score
Fast drying with built-in fan
LCD display for temp and time
Compatible with multiple filament types
Polymaker Polydryer Filament Storage Box
4.4Editor score
Sealed design with hygrometer
Supports printing without breaking seal
Compatible with common filament types
Top 10 Best Filament Dryer Box in 2026 Compared
The following comparison highlights key specifications for each model to help you quickly identify which features align with your printing workflow and storage needs.
ProductsSpecificationsEditor scorePrice
Editor's Choice
SUNLU S1 Plus
Fan-assisted drying system
LCD screen interface
35 to 55 Celsius
Single spool capacity
4.3Editor score
Editor's Choice
Creality Space Pi X4
Holds four spools
Dual 200W chambers
Up to 85 Celsius
Touch UI interface
4.6Editor score
Best Premium
Comgrow SH01
Stores two spools
Sealed outlet structure
40 to 50 Celsius
2-inch LCD screen
4.4Editor score
Polymaker Polydryer
Sealed storage with hygrometer
Printing while sealed
Desiccant support included
Multi-filament ready
4.4Editor score
SUNLU S2
Translucent lid design
Continuous spinning spindle
Up to 70 Celsius
Large internal capacity
4.3Editor score
Comgrow SH02
Two spool capacity
360 PTC heater
9 filament presets
Sealing ring protection
4.4Editor score
Creality Space PI
Upgraded PTC heater
3.7-inch touch screen
12 filament presets
Power-off memory function
4.4Editor score
Creality Space PI Plus
Dual-spool capacity
Real-time humidity monitor
Up to 70 Celsius
360 hot-air heating
4.4Editor score
Creality Space Pi X4L
Holds four spools
Dual 200W chambers
Up to 75 Celsius
Silicone-sealed enclosure
4.5Editor score
Creality Space Pi X4 DB-05
Eight filament holes
Dual independent chambers
Up to 85 Celsius
Single or dual mode
4.6Editor score
1. SUNLU S1 Plus – Best Fan-Assisted Drying
SUNLU Filament Dryer Box 2026 New Upgrade S1 Plus
Upgraded fan design
Visual LCD display
Adjustable settings
High compatibility
The SUNLU S1 Plus stands out with its fan design that accelerates moisture removal. It scores 4.3 stars for reliable performance and user-friendly controls.
Pros
- Fan speeds up drying
- Clear LCD readout
- Supports multiple materials
- Good temperature range
- Easy to operate
Cons
- Single spool only
- Limited to moderate temps
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Its visual display shows time temperature and humidity accurately. You can adjust settings easily for different filaments improving surface smoothness and adhesion.
While effective it handles only one spool at a time. The temperature cap suits most common materials but may limit high-temp engineering options.
Buy this if you need a simple efficient dryer for daily use. It balances performance and simplicity well for most home users.
Why Fan-Assisted Drying Matters
The built-in fan circulates air to evaporate moisture faster than passive heaters alone.
Ease of Use
The LCD screen and button layout make setting times and temps straightforward for new users.
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2. Creality Space Pi X4 – Best High-Volume Drying
Creality Filament Dryer Box 4 Spools Space Pi X4
Holds 4 spools
Dual 200W chambers
Up to 85 Celsius
Touch UI control
The Space Pi X4 offers premium capacity with four spool slots and dual heating chambers. It earns 4.6 stars for efficiency and precise control features.
Pros
- High capacity storage
- Independent chamber control
- Fast PTC heating
- Sealed humidity control
- High user ratings
Cons
- Higher price point
- Larger footprint
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Its dual 200W chambers heat faster and allow different temps for various filaments. The sealed enclosure maintains dry conditions even during printing pauses.
The main trade-offs are cost and size. This unit requires more workspace and investment but delivers unmatched throughput for busy shops.
Choose this for high-volume printing or engineering materials. Its speed and capacity justify the cost for serious makers.
Dual Chamber Advantage
Independent chambers let you dry two filament types simultaneously at different temperatures without mixing.
Engineering Grade Support
Reaching 85 Celsius unlocks drying for high-temp materials like PC PAHT and ASA effectively.
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3. Comgrow SH01 – Best Sealed Storage Design
Comgrow 3D Printer Filament Dryer Box SH01
Holds 2 spools
Sealed outlet structure
Up to 50 Celsius
LCD touch buttons
Comgrow SH01 focuses on sealed storage with a dedicated outlet for feeding filament. It holds 4.4 stars for balancing cost and usability.
Pros
- Good storage capacity
- Sealed outlet design
- Clear LCD interface
- Affordable price tier
- Easy cable management
Cons
- Max 50 Celsius limit
- Single chamber design
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The silicone-sealed outlet prevents moisture re-absorption during printing. Its LCD and touch buttons simplify setting time and temperature for common filaments.
The 50 Celsius cap limits use to PLA PETG and TPU. High-temp materials need a dryer with higher heating capability.
Buy this for everyday printing needs and budget-conscious users. It provides reliable drying for common materials without extra cost.
Sealed Outlet Benefit
The sealed outlet keeps moisture out while the filament feeds into your printer during jobs.
Simple Controls
Touch buttons and an LCD screen make operation intuitive without complex menus.
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4. Polymaker Polydryer – Best Sealed Storage Solution
Polymaker Polydryer Filament Storage Box
Sealed enclosure design
Built-in hygrometer
Printing while sealed
Desiccant support
Polymaker Polydryer uses a sealed box with hygrometer to store and protect filament passively. It rates 4.4 stars for ease of use and consistent protection.
Pros
- Airtight sealing
- Humidity monitoring
- Print without opening
- Simple passive design
- Wide material support
Cons
- No active heating
- Relies on desiccant
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You can feed filament through the seal while printing to prevent moisture re-absorption. The hygrometer helps track conditions so you know when to replace desiccant.
Without active heating it relies on desiccants and sealed storage. This is less effective for very damp filaments but great for maintenance.
Choose this for long-term storage and simple drying needs. It is ideal for keeping spools ready between jobs without electricity.
Why Humidity Monitoring Helps
The built-in hygrometer shows humidity levels so you can verify dry conditions without guesswork.
Passive Protection
No active heating means lower energy use and simpler maintenance over time.
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5. SUNLU S2 – Best Translucent Lid Design
SUNLU Filament Dryer S2
Translucent lid
Continuous spindle
Up to 70 Celsius
Large capacity
The SUNLU S2 features a translucent lid for checking filament without opening. It scores 4.3 stars for convenience and solid drying performance.
Pros
- Visual inspection easy
- Continuous spinning helps
- Higher temp range
- Large spool support
- Simple touch screen
Cons
- Single spool only
- Larger footprint
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Its continuous spinning spindle ensures even drying across the spool. The large capacity supports various filament diameters and the temp goes up to 70 Celsius.
The size can be bulky on small benches. It also handles one spool at a time which limits throughput for busy shops.
Buy this for versatile single-spool drying with easy monitoring. It suits users who want to inspect progress frequently.
Translucent Lid Advantage
Check drying progress without breaking the seal or interrupting the drying cycle.
Continuous Spinning
Spinning the spool ensures uniform heat distribution and reduces cold spots.
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6. Comgrow SH02 – Best Two-Spool Drying
Comgrow Filament Dryer Box SH02
Holds 2 spools
360 PTC heater
9 filament presets
Sealing rings
Comgrow SH02 upgrades to two spool capacity with a fast PTC heater and presets. It holds 4.4 stars for practical features and safety.
Pros
- Dual spool capacity
- One-key presets
- Fast PTC heating
- Comprehensive sealing
- Safety cut-off
Cons
- Single chamber heat
- Fan alarm needed
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One-key presets simplify selecting temps for nine filament types. The 360 heater ensures even warming and sealing rings keep humidity out during storage.
A single chamber warms both spools together limiting independent control. Fan monitoring helps prevent overheating if airflow stalls during use.
Choose this for dual-spool convenience at a moderate price. It suits users needing quick drying for multiple jobs.
One-Key Presets
Press a button to set temps and times for common filament types instantly.
Safety Protections
Fan alarm and over-temp cut-off reduce risk of damage or unsafe conditions.
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7. Creality Space PI – Best Touch Screen Interface
2026 New Creality Space PI Filament Dryer
3.7-inch touch screen
12 filament presets
Power-off memory
Up to 70 Celsius
Creality Space PI features a large touch screen and many presets for easy operation. It rates 4.4 stars for user convenience and modern design.
Pros
- Large touch display
- Wide preset selection
- Power-off memory
- Energy-saving PTC
- High temp support
Cons
- Single spool focus
- Fan required
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One-key settings cover twelve filament types including composites. Power-off memory retains your last settings after outages and the 360 heater ensures even drying.
It handles one spool and requires a fan for even results. Some users may prefer dual options for heavier workloads.
Buy this for a modern interface and broad material support. It suits users who value quick setup and reliability.
Power-Off Memory
Settings like temp and time remain stored so you dont need to reset after outages.
Wide Material Support
Twelve presets cover common and high-performance composites for easy configuration.
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8. Creality Space PI Plus – Best Real-Time Humidity Monitor
Creality Space PI Plus
Dual-spool capacity
Real-time humidity
360 hot-air
Up to 70 Celsius
Space PI Plus upgrades to two spools and adds humidity monitoring. It earns 4.4 stars for improved capacity and feedback during drying.
Pros
- Two spool support
- Humidity monitoring
- Even PTC heating
- Large touch display
- Energy-saving mode
Cons
- Single chamber heat
- Moderate max temp
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Real-time humidity shows dryness without guessing. The dual-spool design supports more prints and the 360 heater ensures uniform heat distribution.
It caps at 70 Celsius limiting some high-temp filaments. Single chamber design means both spools share the same temp profile.
Choose this if monitoring and capacity matter most. It suits users printing multiple materials regularly.
Humidity Monitoring
Live humidity data helps you confirm dryness before and after cycles.
Dual Spool Value
Dry two spools together to reduce wait time and keep workflow moving.
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9. Creality X4L – Best Dual-Chamber Efficiency
Creality Space Pi X4L
Holds 4 spools
Dual 200W chambers
Up to 75 Celsius
Independent control
Space Pi X4L delivers dual independent chambers for four spools and fast drying. It scores 4.5 stars for efficiency and capacity.
Pros
- Four spool capacity
- Independent chambers
- Rapid drying speed
- High user scores
- Silicone sealing
Cons
- High price
- Large size
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Independent chambers allow separate temperature profiles. The 200W chambers heat faster and the sealed enclosure maintains humidity during printing pauses.
Cost and size are significant considerations. This unit requires dedicated space and budget but offers superior performance.
Choose this for professional or high-volume workflows. The capacity and dual control justify the investment for active makers.
Independent Control
Run separate temps in each chamber to dry different materials simultaneously.
Sealed Humidity Control
Silicone sealing keeps moisture out even while printing and pausing.
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10. Creality DB-05 – Best Dual Chamber Precision
Creality Space Pi X4 DB-05
Eight filament holes
Dual independent heaters
Up to 85 Celsius
Single or dual mode
DB-05 features dual independent chambers and eight output holes for multi-printer setups. It holds 4.6 stars for versatility and high temp capability.
Pros
- Eight output holes
- Dual chamber control
- Engineering temps
- Energy-saving options
- High user ratings
Cons
- Requires heat-resistant trays
- Higher price tier
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Each chamber has its own PTC heater allowing different temps. Eight holes support printing on multiple printers simultaneously for maximum throughput.
You must use heat-resistant trays with specific filaments. Price and footprint are higher but capacity and flexibility are unmatched.
Choose this for maximum throughput and engineering materials. It suits studios or makers printing multiple jobs at once.
Eight Output Holes
Supports simultaneous printing on multiple machines with separate feeding paths.
Independent Chamber Control
Each chamber sets its own temp so you can dry different types at once.
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Buying Guide – How to Choose the Best Filament Dryer Box
Selecting the right filament dryer box depends on your materials capacity needs and budget. Understanding key factors helps you avoid poor drying and wasted prints.
Heating Technology
PTC heaters are common for their efficiency and rapid warm-up times. Compare wattage and whether the unit uses one or two chambers for independent control.
Look for units that match your max temp requirements for common and engineering filaments.
Capacity and Spools
Decide how many spools you need to dry at once. Single spool models suit basic needs while dual or four-spool units support higher throughput.
Check internal dimensions to ensure compatibility with your spool sizes and printer setups.
Sealing and Storage
Sealed enclosures prevent moisture re-absorption between prints. Look for silicone rings and cable outlets that remain closed during idle time.
Good sealing extends shelf life and protects spools from humid environments.
Control Interface
LCD touchscreens make setting temp and time straightforward. Preset options reduce steps for common materials and power-off memory preserves settings.
Choose an interface that fits your workflow and reduces setup errors.
Temperature Range
Standard filaments need lower heat while engineering grades require higher temps. Verify the max temperature meets your highest requirement.
A wider range ensures flexibility for future materials and projects.
Safety Features
Overheat protection and fan failure alarms prevent damage and fire risks. Energy-saving modes reduce costs and heat generation.
Prioritize models with certified safety systems for long-term reliability.
Material Compatibility
Confirm support for your common and specialty materials. Some units include preset profiles to simplify setup for composites.
Check reviews for compatibility issues with large spools or specific brands.
Footprint and Portability
Measure your available workspace to accommodate the dryer. Compact designs suit small benches but may limit capacity.
Consider portability if you move the unit frequently between locations.
How to Use and Care for Your Filament Dryer Box
Place the dryer on a stable heat-resistant surface near your printer. Ensure adequate airflow around vents to maintain cooling and efficiency.
Set the temperature and time based on filament type and moisture level. Use the LCD to monitor conditions and adjust settings as needed.
Keep the seal closed when not in use to maintain dryness. Clean the interior and replace desiccants if included to prevent mold and dust.
Frequently Asked Questions
How long does it take to dry filament in a box?
Drying times vary by moisture level and unit design but typically range from hours to days for heavily damp spools. Use the built-in timers and presets to automate cycles.
Can you print while the filament is in the dryer?
Many models support printing while sealed using cable outlets. This keeps humidity low and prevents re-absorption during pauses.
What temperature should I set for PLA?
PLA usually dries well between 40 to 55 degrees Celsius. Avoid higher temps that can soften the filament.
Do all dryer boxes use PTC heaters?
Most modern units use PTC heaters for speed and safety. Some budget storage boxes rely on desiccants and passive sealing instead.
How do I know if filament is dry enough?
Check humidity levels with a hygrometer if available. Look for improvements in print quality and reduced bubbling on surfaces.
Is a dual chamber dryer better?
Dual chambers allow different temps for multiple materials at once. They offer efficiency for varied workflows but cost more and take more space.
Do I need to replace anything over time?
Fans and desiccants may need replacement after extended use. Keep spare parts and follow maintenance tips to ensure longevity.
Can I use these with engineering filaments?
Higher-end models reach temperatures needed for PC PA and ASA. Verify max temps before buying to support these materials.
Final Thoughts on Choosing the Best Filament Dryer Box
The top picks cover different needs from budget storage to high-volume dual chambers. Each model balances capacity controls and temperature range for practical drying.
Prioritize the factors that match your workflow like spool count and max temperature. A well-matched dryer reduces waste and improves print quality consistently.
Always verify current prices and availability before purchasing. Conditions change so check product listings and reviews for the latest details.