SUNLU Filament Dryer Box 2026 New Upgrade S1 Plus
4.3Editor score
Fast drying with fan design
Visual LCD display for settings
High compatibility with filament sizes
In this guide
Filament dryer boxes are essential tools for maintaining print quality by removing moisture from 3D printing materials before and during use. They prevent issues like stringing and layer adhesion failures that ruin projects.
We compared ten leading models based on heating technology, capacity, ease of use, and compatibility with different filament types. Each option offers unique benefits for hobbyists and professionals alike.
Every pick highlights key strengths and potential trade-offs to help you find the perfect fit for your workflow. Please note that product availability and specifications may change over time.
Top 3 Picks for Best Filament Dryer Box
Creality Filament Dryer Box 4 Spools Space Pi X4
4.6Editor score
Dual independent heating chambers
Spacious organized storage for four spools
Precise temperature control touch UI
Official Creality Filament Dryer Space Pi X4
4.6Editor score
Dual chambers independent temperature control
Heats up to eighty five degrees Celsius
Flexible energy efficient drying modes
Top 10 Best Filament Dryer Box in 2026 Compared
This table provides a side by side overview of all ten models including key specifications and links to detailed reviews for informed decision making.
ProductsSpecificationsEditor scorePrice
Best Budget
SUNLU Filament Dryer Box S1 Plus
Fan assisted fast drying
Two inch LCD screen
Adjustable temperature range
Compatible with 1.75mm spools
4.3Editor score
Editor's Choice
Creality Filament Dryer Box 4 Spools
Holds four standard spools
Dual 200W heating chambers
Touch UI scene control
Up to 85C max temp
4.6Editor score
Best Premium
Comgrow 3D Printer Filament Dryer Box
Large storage volume
Two spool capacity
Real-time monitoring screen
Sealed outlet with sheath
4.4Editor score
Polymaker Polydryer Filament Storage Box
Sealed storage design
Hygrometer included
Print without breaking seal
Compatible with multiple materials
4.4Editor score
SUNLU Filament Dryer S2
Large capacity dimensions
Translucent lid for viewing
Customizable drying time
Built-in spindle for drying
4.3Editor score
Comgrow Filament Dryer Box SH02
360 degree PTC heating
One key settings for types
Two spool holes
Intelligent safety protection
4.4Editor score
2026 New Creality Space PI Dryer
Upgraded PTC heating
Large touch screen
One key filament settings
Power-off memory function
4.4Editor score
2026 New Creality Space PI Dryer Plus
Dual spool capacity
360 degree hot air
Real-time humidity monitor
Twelve filament presets
4.4Editor score
Creality Space Pi X4L Dryer
Holds four spools
Dual heating chambers
Illuminated window
Touch UI control
4.5Editor score
Official Creality Space Pi X4 Dryer
Eight filament holes
Independent chamber heating
Heats to 85C
Power saving modes
4.6Editor score
1. SUNLU Filament Dryer Box 2026 New Upgrade S1 Plus – Best Budget
SUNLU Filament Dryer Box 2026 New Upgrade S1 Plus
Fan assisted drying
Two inch LCD
Adjustable temperature
High compatibility
This dryer box offers excellent value with a fan design that speeds up water discharge for wet weather conditions. It features a visual display showing temperature and humidity with adjustable settings for different materials.
Pros
- Fast drying with fan
- Visual display for settings
- Adjustable temperature range
- High compatibility
- Customer service support
Cons
- Limited temperature range
- Single chamber design
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The personalized settings allow you to adjust temperature and time for specific filament needs. High compatibility means it fits most 3D printing filament sizes and brands ensuring smooth operation.
While the temperature range is slightly lower than premium models it still covers most common filaments. The single chamber design may limit drying multiple spools simultaneously compared to larger units.
Ideal for hobbyists seeking reliable drying without breaking the bank. This model helps solve stringing and clogging issues effectively ensuring better print quality for everyday projects.
Visual Display Accuracy
The LCD screen accurately detects and displays temperature and humidity allowing precise monitoring during the drying process.
High Compatibility
It works with all major brands and filament sizes including PLA PETG ABS and TPU ensuring versatility across your workflow.
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2. Creality Filament Dryer Box 4 Spools Space Pi X4 – Editor's Choice
Creality Filament Dryer Box 4 Spools Space Pi X4
Four spool capacity
Dual 200W chambers
85C max temp
Touch UI control
This model offers spacious storage for four standard spools with dual independent heating chambers for faster moisture removal. It includes a precise touch UI for customizing temperatures for various filament types.
Pros
- Spacious organized storage
- Fast efficient drying
- Dual functionality
- Precise temperature control
- Protects filament investment
Cons
- Higher price point
- Requires careful setup
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The dual functionality allows drying and storage maintaining humidity during printing pauses. Real-time display helps monitor spools without breaking humidity control ensuring consistent high-quality prints.
While the higher price reflects premium features it extends filament shelf life significantly. The complexity of setup may require some time to master compared to simpler units.
Best for users needing high volume capacity and advanced temperature control. It eliminates bubbling and stringing issues ensuring print-ready filament in hours instead of days.
Dual Heating Chambers
Dual independent 200W chambers remove moisture 30 percent faster than single chamber dryers for efficiency and speed.
Dual Functionality
It acts as a dryer and storage unit maintaining humidity during printing pauses with a silicone-sealed enclosure.
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3. Comgrow 3D Printer Filament Dryer Box – Great Sealed Option
Comgrow 3D Printer Filament Dryer Box
Large storage volume
Two spool capacity
Real-time monitoring
Sealed outlet
Comgrow offers a large volume for two spools with real-time temperature and humidity monitoring via a touch screen. The sealed design with silicone sheath prevents moisture re-absorption effectively.
Pros
- Large storage volume
- Real-time monitoring
- Great sealed design
- Easy operation
- Good customer support
Cons
- Shut down auto feature
- Outlet sealing required
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Its sealed design ensures moisture removal and dry storage during printing. Real-time monitoring allows you to adjust settings easily for different filament needs avoiding layer issues.
The auto shut down feature may be inconvenient if you forget settings. The outlet sealing requires manual adjustment which can be a minor hassle for some users.
Ideal for those needing reliable moisture removal without complex setups. It keeps filament dry and prevents entanglement ensuring better print quality and less waste.
Real-time Monitoring
A 2-inch LCD screen and touch buttons make it easy to operate with comprehensive and clear information display.
Great Sealed Design
The outlet uses silicone sheath and Teflon tube with sealing rings ensuring performance is good and dry.
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4. Polymaker Polydryer Filament Storage Box – Simple and Effective
Polymaker Polydryer Filament Storage Box
Sealed storage design
Hygrometer included
Print without breaking seal
Multi-filament ready
This storage box helps keep moisture-sensitive filament in a better printing state between uses with sealed design and desiccant support. It includes a built-in hygrometer for humidity monitoring.
Pros
- Consistent filament protection
- Seal and desiccant protection
- Humidity monitoring
- Print without breaking seal
- Multi-filament ready
Cons
- No heating element
- Storage only
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The sealed storage design prevents moisture-related issues like stringing and bubbling. You can print without breaking the seal ensuring better moisture protection during pauses and storage.
It lacks a heating element so it relies on ambient conditions. This means it may not dry damp filament as fast as heated units.
Best for storing filament between projects or in dry environments. It reduces exposure to humid air and helps maintain consistent quality for common materials.
Humidity Monitoring
Use it as a humidity control box and track storage conditions more easily with the built-in hygrometer.
Print Without Breaking Seal
This box supports filament feeding while the spool remains stored inside allowing printing without breaking the sealed setup.
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5. SUNLU Filament Dryer S2 – Revive Damp Filament
SUNLU Filament Dryer S2
Large capacity
Translucent lid
Customizable time
Built-in spindle
The SUNLU S2 is designed to revive old damp filament using fast heating and even drying. It features a large capacity and translucent lid for checking without opening.
Pros
- Revives damp filament
- Fast heating
- Very simple effective
- High compatibility
- Large capacity
Cons
- Bulky size
- No humidity display
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It uses a built-in spindle to ensure continuous filament spinning for even drying. Users can customize drying time and temperature to suit specific filament needs.
The lack of a humidity display means you rely on temperature settings. The size may be bulky for smaller workspaces compared to compact models.
Ideal for those needing to save old filament before printing. Its simplicity and effectiveness make it a reliable choice for improving print quality.
Revive Damp Filament
Moisture can be a real problem for old filament and this dryer specifically removes excess moisture saving time and money.
High Compatibility
With a large capacity it is compatible with filaments of 1.75mm 2.85mm and 3.00mm offering versatility.
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6. Comgrow Filament Dryer Box SH02 – Intelligent Safety
Comgrow Filament Dryer Box SH02
360 degree PTC heating
One key settings
Two spool holes
Intelligent safety
The SH02 features a 360 degree PTC heater that heats up faster and is energy efficient. It has one-key settings for nine filament types and intelligent safety protection.
Pros
- Fast heater
- 360 degree heating
- One key settings
- Intelligent safety protection
- Sealed design
Cons
- Two spool capacity only
- Fan replacement needed
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Its intelligent safety cuts off heating if temperature exceeds limits and resumes when safe. The sealed design ensures sealing rings prevent moisture from entering during use.
Only two spools can be dried at once which may limit large users. The fan alarm prompts replacement if it stops ensuring safety but adds maintenance.
Best for users wanting fast heating with safety features. It efficiently dries filaments and improves printing results with energy efficient operation.
360 Degree PTC Heating
Adopts a 150W PTC heater that can heat up faster and is more energy efficient for uniform heating.
One Key Settings
It has one-key temperature settings for nine different types of 3D Printing filaments including PLA TPU and ABS.
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7. 2026 New Creality Space PI Dryer – Upgraded PTC
2026 New Creality Space PI Dryer
Upgraded PTC heating
Large touch screen
One key settings
Power-off memory
Creality's upgraded model uses PTC heating for uniform 360 degree hot-air heating. It features a large touch screen for operation with one-key settings for 12 filament types.
Pros
- Upgraded PTC heating
- Advanced PTC technology
- Easy operation
- One key settings
- Power-off memory
Cons
- 48 hour limit
- No dual chamber
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The power-off memory function ensures you do not lose settings after a power outage. A 48 hour timer allows flexible drying durations for various filament needs.
Lacking dual chamber limits it to one filament type at a time. The 48 hour limit may be insufficient for heavily damp materials requiring extended drying.
Ideal for users seeking easy operation and uniform heating. It supports both common and composite filaments making it versatile for many projects.
Upgraded PTC Heating
The filament dryer quickly heats with a built-in fan circulating hot air 360 degrees for uniform heating.
Easy Operation LCD Touch Screen
Comes with a 3.7-inch touch screen for easy operation making it simple to track drying conditions.
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8. 2026 New Creality Space PI Dryer Plus – Dual Spool
2026 New Creality Space PI Dryer Plus
Dual spool capacity
360 degree hot air
Real-time humidity
Twelve presets
This plus model offers dual spool capacity with real-time humidity monitoring for better control. It features 360 degree hot-air heating and one-key settings for 12 filament types.
Pros
- Dual spool capacity
- Upgraded PTC heating
- Real-time humidity
- One key settings
- Power-off memory
Cons
- Single chamber design
- Limited to 70C
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Real-time humidity monitoring ensures you know when filaments are ready. The dual spool capacity allows drying two materials simultaneously improving efficiency.
The single chamber design limits temperatures to 70C which may not suit engineering filaments. The 12 presets are useful but may need adjustment for specific needs.
Ideal for users wanting dual spool flexibility and humidity tracking. It supports various filaments making it a versatile addition to any workspace.
Dual Spool Capacity
The Plus model offers dual spool capacity allowing drying two materials simultaneously improving efficiency.
Real-Time Humidity
Real-time humidity monitoring ensures you know when filaments are ready for use without opening the box.
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9. Creality Space Pi X4L Dryer – Spacious and Efficient
Creality Space Pi X4L Dryer
Four spool capacity
Dual heating chambers
85C max temp
Touch UI
The X4L model holds four standard spools with dual independent heating chambers for rapid moisture removal. It features a touch UI for precise temperature control up to 85 degrees.
Pros
- Spacious organized storage
- Fast efficient drying
- Dual functionality
- Precise temperature control
- Protects filament
Cons
- Higher price
- Large footprint
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Dual functionality allows drying and storage maintaining humidity during pauses with sealed enclosure. It supports advanced filaments like ABS and PC for professional use.
The larger footprint requires more desk space. The higher price may not suit budget users looking for basic storage solutions.
Best for high volume users needing capacity and speed. It ensures print-ready filament in hours and protects your filament investment effectively.
Spacious Organized Storage
Holds 4 standard 1kg spools or 2 large 2kg spools for high volume users.
Dual Functionality
Acts as dryer and storage maintaining humidity during printing pauses with a silicone-sealed enclosure.
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10. Official Creality Filament Dryer Space Pi X4 – Best Premium
Official Creality Filament Dryer Space Pi X4
Eight filament holes
Dual chambers
Heats to 85C
Energy efficient
This official model offers four spools and eight filament holes for maximum efficiency. Dual independent chambers allow drying different filaments at separate temperatures with energy saving modes.
Pros
- Eight filament holes
- Dual chambers
- Heats to 85C
- Energy efficient
- Protects filament
Cons
- Requires heat resistant trays
- Higher price
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It heats up to 85 degrees ideal for engineering filaments like PC and PAHT. Energy efficient modes save up to 40 percent energy when using single chamber operation.
Requires heat resistant plastic trays which must be purchased separately. The higher price reflects premium build and advanced features for serious users.
Best for professional users needing maximum capacity and control. It revolutionizes drying with flexibility and efficiency for consistent high-quality prints.
Eight Filament Holes
With eight filament holes and PTFE tubing this innovative dryer meets the need for drying multiple filaments and allows printing on four printers at the same time.
Dual Chambers Independent Temperature Control
Each chamber is equipped with an independent PTC heater allowing simultaneous drying of two filament types at different temperatures in one machine.
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Buying Guide – How to Choose the Best Filament Dryer Box
Choosing the right filament dryer box depends on your needs volume of use and budget. Here are key factors to consider when making your selection.
Heating Technology
Heating technology determines how efficiently moisture is removed from filaments. Look for models with PTC heaters which provide faster and more uniform heating compared to traditional heating pads.
Capacity and Spool Count
Capacity varies from single spool to four spool models. Choose based on how many filaments you use regularly to avoid frequent reloading and ensure efficiency.
Temperature Range
Temperature range should match the filaments you use. Common plastics need lower temps while engineering materials require higher ranges up to 85 degrees for proper drying.
User Interface
User interface ease affects how simple it is to set and monitor drying. Touch screens and LCD displays offer intuitive control and real-time feedback on conditions.
Sealing and Moisture Protection
Effective sealing prevents moisture re-absorption after drying. Look for silicone rings and covered outlet ports to maintain dry storage when not actively heating.
Additional Features
Additional features like humidity monitoring and presets add convenience. Power-off memory and safety alarms help protect your equipment and ensure safe operation.
Compatibility
Compatibility ensures the dryer fits your filament sizes. Most models support 1.75mm and 2.85mm but check dimensions if you use custom or large spools.
Durability and Build
Durability impacts longevity especially for daily use. Select units with robust construction and reliable heating elements to withstand regular drying cycles.
How to Use and Care for Your Filament Dryer Box
Place the spool inside ensuring the outlet hole is covered or plugged when not in use to maintain dry storage. Turn on the unit and set temperature and time based on your filament type.
Monitor the display during drying and ensure the fan circulates air properly. Remove the spool only when drying is complete to avoid moisture re-absorption.
Clean the interior regularly and check sealing rings for wear. Store the unit in a dry place when not in use to prolong its life.
Frequently Asked Questions
Why use a filament dryer box?
A filament dryer box removes moisture from filaments which prevents printing issues like stringing and bubbling. It ensures better print quality and layer adhesion for all filament types.
How long does drying take?
Drying time varies from a few hours to overnight depending on filament moisture levels. Use the timer function to customize duration based on your needs.
Can I print while drying?
Yes most dryer boxes allow printing while drying as long as the spool feeds correctly. Ensure the outlet is sealed to maintain humidity control.
What filaments need drying?
Materials like PLA PETG TPU and nylon benefit from drying especially in humid environments. Engineering filaments like ABS and PC require higher temperatures.
Does it work for storage?
Many models function as both dryers and storage units. When turned off they keep filaments dry with sealed enclosures for long-term storage.
How do I clean it?
Clean the interior with a dry cloth and check sealing rings for dirt. Avoid using water or harsh chemicals that might damage the electronics.
Final Thoughts on Choosing the Best Filament Dryer Box
We reviewed ten excellent models ranging from budget friendly to premium options with various features and capacities. Each offers unique benefits for improving your 3D printing workflow.
Prioritize heating technology and capacity based on your usage needs. Choose models with clear displays and easy controls for better user experience.
Always check current availability and specifications as products may change. Select a dryer box that matches your filament types and workspace constraints.