SUNLU Filament Dryer Box 2026
4.3Editor score
Fast drying with built-in fan design
Visual LCD display for monitoring
Compatible with most filament types
In this guide
Filament dryer boxes are essential tools for maintaining print quality by removing moisture from spools. These devices prevent issues like stringing, clogging, and poor adhesion that plague damp materials during printing sessions.
We compared ten leading models based on capacity, heating technology, temperature range, and ease of use. Our analysis focuses on real-world performance and compatibility with common 3D printing filaments across various environments.
Each pick highlights key strengths and ideal user scenarios to help you choose the right dryer for your needs. Please note that product availability and pricing may change frequently, so verify details before purchasing.
Top 3 Picks for Best Filament Dryer Box
Creality Filament Dryer Box 4 Spools
4.6Editor score
Holds up to four standard spools
Dual independent heating chambers for speed
Precise touch UI temperature control
Creality Space Pi X4 Filament Dryer
4.6Editor score
Dual chamber independent temperature control
Up to 85°C max temperature reach
Eight filament holes for multi-printer
Top 10 Best Filament Dryer Box in 2026 Compared
The following table provides a side-by-side comparison of the top ten filament dryer box models available this year. Reviewing these specifications helps identify the right balance of capacity, features, and value for your specific printing requirements.
ProductsSpecificationsEditor scorePrice
Best Budget
SUNLU S1 Plus Dryer Box
Max Temp: 55°C
Capacity: 210x89mm height
Display: 2 inch LCD
Features: Fan assisted drying
4.3Editor score
Editor's Choice
Creality Space Pi X4 Dryer
Max Temp: 85°C
Capacity: 4 standard spools
Heating: Dual 200W chambers
Display: Touch UI interface
4.6Editor score
Best Premium
Comgrow SH01 Filament Box
Max Temp: 50°C
Capacity: 2 rolls of 1kg
Display: 2 inch LCD touch
Features: Sealed cable outlet
4.4Editor score
Polymaker Polydryer Storage Box
Max Temp: Passive storage
Capacity: 1kg spool size
Features: Built-in hygrometer
Design: Airtight sealed enclosure
4.4Editor score
SUNLU S2 Filament Dryer
Max Temp: 70°C
Capacity: 265x274x118mm
Display: Large touch screen
Features: Built-in spindle
4.3Editor score
Comgrow SH02 Filament Box
Max Temp: 70°C
Capacity: 2 rolls of 1kg
Heating: 150W PTC 360°
Features: One-key preset settings
4.4Editor score
Creality Space PI Filament Dryer
Max Temp: 70°C
Display: 3.7-inch touch screen
Heating: 110W PTC 360°
Features: 12 filament presets
4.4Editor score
Creality Space PI Dryer Plus
Max Temp: 70°C
Display: 3.7-inch touch screen
Heating: 110W PTC 360°
Features: Real-time humidity monitor
4.4Editor score
Creality Space Pi X4L Dryer
Max Temp: 75°C
Capacity: 4 standard spools
Heating: Dual 200W chambers
Design: Illuminated window
4.5Editor score
Creality Space Pi X4 DB-05
Max Temp: 85°C
Capacity: 4 standard spools
Heating: Dual 200W chambers
Design: Eight filament holes
4.6Editor score
1. Creality Filament Dryer Box 4 Spools – Best Overall Filament Dryer Box
Creality Filament Dryer Box 4 Spools
Dual independent heating chambers
Up to 85°C max temperature
Capacity for 4 standard spools
Touch UI control interface
This Creality space Pi X4 dryer stands out as the top choice for serious print enthusiasts due to its massive capacity and powerful dual heating chambers. With a 4.6 rating, it delivers exceptional moisture removal for engineering filaments that need higher temperatures.
Pros
- Holds large volume of filament
- Dual chambers allow different temps
- Very fast drying performance
- Maintains humidity during printing
Cons
- Higher price point than others
- Requires significant workspace
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The dual independent heating chambers allow you to dry two types of filament at different temperatures simultaneously, cutting drying time by 30 percent compared to single chamber units. The touch UI provides precise control ranging from 50 to 85 degrees Celsius for various material needs.
While it costs more than basic dryers, the ability to store and dry four spools at once justifies the investment for high volume users. The silicone sealed enclosure prevents moisture reabsorption even when printing pauses, ensuring consistent results over long sessions.
Users managing multiple printers or using high performance materials like PAHT and PC should prioritize this model. It offers the best balance of speed, capacity, and advanced temperature control available on the market today for professional environments.
Dual Chamber Efficiency
Independent PTC heaters allow simultaneous drying of different materials at their optimal temperatures without compromise.
High Temp Capability
Reaching up to 85 degrees Celsius unlocks support for advanced engineering filaments that standard dryers cannot handle.
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2. SUNLU Filament Dryer Box 2026 – Best Budget Filament Dryer Box
SUNLU Filament Dryer Box 2026
Fast drying with fan design
Visual LCD temperature display
Max temperature up to 55°C
Compatible with all filament types
The SUNLU S1 Plus offers an excellent entry point for those new to filament drying with its affordable price and reliable performance. A 4.3 rating reflects its ability to solve common issues like stringing and clogging without a major financial commitment.
Pros
- Affordable entry price point
- Fan speeds up drying process
- Clear LCD screen display
- Good sealing performance
Cons
- Limited to 55 degrees max
- Lower capacity for large spools
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Its upgraded fan design accelerates the discharge of excess water from filaments significantly faster than passive units. The visual display allows precise monitoring of time and temperature settings making it simple to adjust for PLA PETG or ABS materials.
The 55 degree Celsius limit suits most standard plastics but may fall short for high temp engineering materials. The 210 by 89 millimeter height capacity works for many standard spools though taller bundles might not fit inside easily.
Home users and hobbyists looking for cost effective moisture protection will find this box delivers solid value. It provides essential drying features in a compact form factor that fits neatly into most desktop printing workspaces.
Fan Assisted Drying
Integrated fan circulation reduces drying time compared to traditional static heater boxes by expelling moisture efficiently.
User Friendly Interface
Simple button controls and an LCD screen make temperature adjustments intuitive even for beginners.
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3. Creality Space Pi X4 Filament Dryer – Best Premium Filament Dryer Box
Creality Space Pi X4 Filament Dryer
Eight filament holes total
Independent dual chamber control
Up to 85°C max temp
Energy efficient modes available
This official Creality model is built for power users who need to dry and print from multiple spools at once. Its 4.6 rating highlights its robust build quality and ability to maintain consistent temperatures for sensitive engineering filaments.
Pros
- Designed for 4 printer setup
- Dual chambers save energy
- High max temperature capacity
- RFID compatible plastic trays
Cons
- Best with official trays
- Large footprint required
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Eight filament holes with PTFE tubing allow direct feeding to four different printers simultaneously without moving spools. The dual chambers enable energy saving modes where only one heater runs when full capacity is not needed reducing overall power consumption.
Users should ensure they use the compatible heat resistant plastic trays for best performance as noted in the product guidelines. This ecosystem approach ensures the heating is directed efficiently to the filament rather than the empty space.
Workshops with multiple machines benefit most from this multi output design allowing a queue of different materials ready at all times. It represents the premium end of drying where throughput and energy efficiency are prioritized over simple storage.
Multi Printer Feeding
Multiple PTFE tubes support simultaneous printing from different spools in different locations without manual swapping.
Energy Saving Modes
Single chamber operation reduces energy use by up to 40 percent when drying only one type of filament.
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4. Comgrow SH01 Filament Dryer Box – Best Basic Filament Dryer Box
Comgrow SH01 Filament Dryer Box
Storage for 2 rolls of 1kg
Max temperature of 50°C
Silicone sealed cable outlet
Real-time humidity monitoring
The Comgrow SH01 is a solid mid range option that balances capacity and cost for typical desktop printers. With a 4.4 rating, it effectively prevents moisture issues for PLA ABS and PETG while keeping the setup simple to manage.
Pros
- Holds 2 spools comfortably
- Good sealing performance
- LCD touch interface
- Affordable price point
Cons
- Temperature limited to 50 degrees
- Shut down after 3 minutes if idle
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Its large storage volume fits two standard 1kg spools side by side which is useful for those printing long batches. The real-time monitoring via 2 inch LCD screen ensures you can track temperature and humidity levels throughout the drying process.
The sealed outlet design uses silicone sheaths to keep moisture out while allowing filament to feed smoothly. This attention to sealing details helps maintain dry conditions even when the machine is not actively heating during breaks.
This model suits users who need to dry more than one spool at a time without needing high temperature engineering support. It is a reliable workhorse for standard materials that require consistent moisture control over days.
Double Spool Capacity
Internal dimensions allow two full 1kg spools to be stored and dried simultaneously without crowding.
Moisture Sealing
Silicone cable sheaths and snap cover structures ensure the environment stays sealed during storage cycles.
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5. Polymaker Polydryer Filament Storage Box – Best Passive Filament Dryer Box
Polymaker Polydryer Filament Storage Box
Passive storage with desiccant
Built-in hygrometer included
Fits 1kg spools easily
Airtight sealed enclosure design
Polymaker takes a different approach with a passive storage box designed to keep filament dry using desiccants rather than heat. Its 4.4 rating shows that for storage between projects this method works well for preventing humidity reabsorption.
Pros
- No power required
- Built-in humidity monitor
- Compact simple design
- Cost effective solution
Cons
- No active heating element
- Requires desiccant replacements
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The built-in hygrometer makes it easy to monitor storage conditions without guessing if your spools are safe. By sealing the enclosure tightly the unit locks out moisture from the air between prints and extends filament shelf life effectively.
Since it lacks active heating it is best used for maintenance drying or storing spools rather than reviving wet filament. You will need to replace desiccants periodically to maintain the desired dry environment inside the container.
This option is ideal for users who prioritize simplicity and low cost over rapid drying speeds. It provides consistent protection against humidity for long term storage and is a great companion to active dryers.
Passive Storage
Relies on desiccant packs and sealed air to keep filaments dry without consuming electricity.
Humidity Monitoring
Visible hygrometer allows quick checks to ensure humidity levels remain low enough for safe storage.
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6. SUNLU Filament Dryer S2 – Best Spool Spinner Filament Dryer Box
SUNLU Filament Dryer S2
Built-in spindle for rotation
Max temperature of 70°C
Translucent lid for checking
Large capacity dimensions
The SUNLU S2 distinguishes itself with a built-in spindle that rotates the filament for uniform drying. A 4.3 rating reflects its effectiveness in eliminating wet spots on the filament that static dryers sometimes leave behind.
Pros
- Spindle ensures even drying
- High capacity for large spools
- Translucent lid allows viewing
- Easy touch screen settings
Cons
- Bulky footprint for desks
- Spindle may limit tall spools
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Large internal dimensions of 265 by 274 by 118mm make it compatible with many bulky or large diameter spools. The translucent lid allows users to check on the filament status without interrupting the drying cycle or opening the box.
With a max temperature of 70 degrees it handles a wide range of materials including ABS and PETG easily. The customization options for time and temperature provide flexibility for different environments and filament needs.
Printers who struggle with uneven quality from damp spools will appreciate the spinning action for consistent results. It is a robust choice for those who need high capacity and reliable heat distribution for daily printing tasks.
Spindle Rotation
Built-in spindle rotates the spool to ensure all sides of the filament are exposed to heat evenly.
High Capacity
Spacious interior accommodates various spool sizes including larger bulk rolls that might not fit elsewhere.
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7. Comgrow SH02 Filament Dryer Box – Best Fast Heating Filament Dryer Box
Comgrow SH02 Filament Dryer Box
150W PTC heater
Capacity for 2 rolls
One-key preset settings
Safety protection features
Comgrow SH02 improves on its predecessor with a faster heating 150W PTC heater and smart preset settings. A 4.4 rating highlights its quick warmup time and ease of use for users who need rapid drying turnaround.
Pros
- Reaches 50°C in 7 minutes
- One-key for 9 filament types
- Multiple sealing rings
- 360 degree hot air
Cons
- Fan alarm may be loud
- Limited to 2 spools
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It reaches 50 degrees in just 7 minutes and 70 degrees in 25 minutes thanks to the efficient heater design. The one-key temperature setting simplifies operation by auto selecting correct times and temps for nine common filament types.
Multiple sealing rings on covers and outlets ensure moisture cannot leak back in during the drying process. Intelligent safety features like overheat cutoff protect the internal components and user from potential hazards during operation.
Users needing quick preparation for printing without manual dialing will find the presets very convenient. This dryer balances speed and convenience effectively for most common materials in a two spool format.
Rapid Warmup
The 150W PTC heater heats the space quickly reducing wait time before starting a print job.
Smart Presets
Built-in profiles for common filaments automate temperature and time settings with a single button press.
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8. Creality Space PI Filament Dryer – Best Multi-Profile Filament Dryer Box
Creality Space PI Filament Dryer
3.7-inch touch screen
110W PTC 360 heating
12 filament presets included
48-hour timer function
This Creality model adds convenience with a large touch screen and presets for twelve different filament types including composites. A 4.4 rating shows it is well suited for users who switch between materials frequently and want simple settings.
Pros
- Supports composite filaments
- Long timer duration
- Power-off memory save
- Large touch interface
Cons
- 70 degree max limit
- Basic capacity size
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One-key settings automatically apply correct temperature and time for materials like PLA-CF or PA-CF which are tricky to set manually. The 3.7-inch display allows easy adjustment and switching between Celsius and Fahrenheit for any user preference.
A 48-hour timer ensures long drying runs can be set without worrying about manual shut down. The power-off memory function restores your last settings after an outage saving you from reconfiguring every time.
It is a versatile pick for users who print composites or specialty blends and need flexible temperature adjustments. The large interface and smart presets make complex filament management much easier for home studios.
Composite Support
Presets include specialized composites like carbon fiber blends that require specific temperatures for best results.
Timer and Memory
Long timers and power loss memory ensure your drying schedule is maintained without constant intervention.
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9. Creality Space PI Filament Dryer Plus – Best Monitor Filament Dryer Box
Creality Space PI Filament Dryer Plus
Real-time humidity monitor
3.7-inch touch display
12 filament presets
Dual spool capacity
The Space PI Plus adds a real-time humidity monitor to the standard features allowing precise tracking of drying progress. A 4.4 rating confirms its utility for users who want visibility into conditions inside the box while it operates.
Pros
- Tracks humidity actively
- One-key settings easy
- Large touch interface
- Adjustable up to 70°C
Cons
- Higher cost than basic
- Capacity limited to two
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It shares the touch screen and preset functionality of the standard PI model but adds environmental tracking for better control. The dual spool capacity allows drying two spools at once for a balanced approach to volume and features.
Adjustable temperature from 45 to 70 degrees covers most common materials while the humidity display gives peace of mind. This extra layer of data helps prevent under drying or over drying by showing exact moisture levels.
Printers who care about exact humidity conditions will value this monitor integration for consistent quality. It is a smart middle ground between basic storage and high volume dryers with detailed feedback capabilities.
Humidity Tracking
Real-time humidity display provides immediate feedback on drying progress and moisture levels inside the box.
Presets
Twelve preset options simplify temperature selection for a wide variety of filaments and composites.
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10. Creality Space Pi X4L Filament Dryer – Best Volume Filament Dryer Box
Creality Space Pi X4L Filament Dryer
4 standard spools capacity
Dual 200W chambers
Up to 75°C max
Illuminated window
This X4L variant offers generous capacity with four spools and dual heating chambers for fast drying of standard filaments. A 4.5 rating indicates strong performance in removing moisture quickly while keeping spools organized in one unit.
Pros
- High capacity storage
- Dual chambers for speed
- Illuminated window visible
- Good temperature range
Cons
- Max temp 75 not 85
- Footprint size required
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The 200W chambers work independently to dry two types of filament faster than single units. The illuminated window allows you to check on spools without opening the box and disrupting humidity control inside.
While it reaches up to 75 degrees rather than 85 it still supports advanced materials like PC and ASA reliably. The sealed enclosure prevents moisture reabsorption ensuring prints remain consistent even when paused overnight.
High volume users who need multiple spools ready simultaneously will find this model offers excellent value. It balances capacity and performance well for those who print frequently and need reliable drying for various materials.
Capacity
Holds four standard 1kg spools which reduces the need to constantly refill and dry new batches.
Illuminated Window
Visible window allows monitoring of spools without breaking the sealed environment or losing humidity control.
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Buying Guide – How to Choose the Best Filament Dryer Box
Selecting the right filament dryer box depends on your printing habits, material choices, and workspace constraints. Below are key factors to evaluate when making your purchase.
Capacity and Spool Count
Capacity varies from single spool to four or more depending on the model. If you print large batches or use multiple printers, a higher capacity unit like the Creality X4 series allows you to dry multiple spools at once. For hobbyists, two spool models provide a good balance of cost and utility.
Choose a capacity that matches your weekly printing volume to avoid bottlenecks.
Maximum Temperature Range
Standard filaments like PLA and PETG dry well at 45 to 60 degrees Celsius. Engineering materials like PA and PC require higher temps up to 70 or 85 degrees. Check the max temp specification to ensure the dryer supports all the materials you plan to use.
Higher max temperatures unlock advanced materials but increase power usage.
Heating Technology
PTC heaters are common and provide efficient, uniform heat compared to simple heating pads. Dual chamber systems divide the interior into separate zones allowing different temps simultaneously. Fan assisted models circulate air to dry spools faster than passive heat only designs.
Dual or fan assisted designs are recommended for faster results and better consistency.
Sealing and Moisture Control
Effective sealing prevents ambient humidity from entering during storage. Look for silicone seals on cable outlets and tight fitting covers. Some boxes include hygrometers to monitor internal humidity levels which adds confidence to the drying process.
Sealed units ensure spools stay dry even between printing sessions.
Ease of Use
Interfaces range from simple buttons to large touch screens with presets. One-key presets for different filament types simplify operation for beginners. Timers and memory functions save settings after power outages which is crucial for long drying runs.
Touch screens and presets reduce setup time and human error.
Compatibility and Size
Ensure the box fits your spool dimensions including hub height and width. Some models require specific plastic trays for optimal heat transfer. Footprint matters for desktop setups; compact boxes are easier to integrate with existing printers.
Measure your spools and desk space before purchasing to ensure a proper fit.
Power Efficiency
Energy savings features like single chamber modes help reduce electricity costs. Models with timers allow you to stop heating once dry avoiding unnecessary runtime. Passive storage boxes require no power but rely on desiccants instead of heat.
Look for energy-saving modes if you dry frequently over long periods.
Price and Value
Budget models cost less but may lack advanced features like dual chambers or high temp support. Premium models justify their cost with speed capacity and material versatility. Consider your long-term needs to determine if a premium unit offers better value over time.
Invest more if you print engineering materials or high volumes regularly.
How to Use and Care for Your Filament Dryer Box
Start by checking your filament for dampness signs like bubbles or pops during printing. Set the appropriate temperature on the dryer screen for your material type either via preset or manual adjustment. Place spools inside ensuring they can rotate or sit without obstruction.
Allow the unit to run for the recommended time usually several hours for dry filament or overnight for wet spools. Monitor the display for temperature stability and ensure the sealing hole remains open during operation to let moisture escape. Close the hole when storing filament without drying.
Regularly clean the interior and check cable outlets for blockages to maintain airflow. Replace desiccants if your model supports passive drying or clean filters if fans are included. Always let the unit cool before moving or storing spools to prevent accidental burns or damage.
Frequently Asked Questions
Do I need to dry filament before printing?
Yes especially for materials like Nylon, TPU, and PETG that absorb moisture quickly. Wet filament causes stringing, poor layer adhesion, and rough surfaces. A dryer box solves these issues by removing water before and during prints for consistent quality.
How long should filament dry in a dryer box?
Drying time depends on moisture levels and material type. Usually 4 to 12 hours is sufficient for spools left in humid environments. Very wet spools may need 24 hours. Check the box display or test print to confirm dryness before starting.
Can I use a dryer box with any 3D printer?
Most dryer boxes are brand agnostic since they feed filament through PTFE tubing to the extruder. Ensure the outlet height and position align with your printer's extruder. Compatibility is broad across FDM printers from different manufacturers.
What is the ideal temperature for drying PLA?
PLA typically dries well between 45 and 55 degrees Celsius. Higher temperatures may warp the filament or affect its chemical structure. Always consult the filament manufacturer guidelines and start with lower settings to avoid degradation.
Does the dryer box work during printing?
Many models are designed to feed filament directly while printing which keeps the spool dry during long prints. This is essential in humid environments where ambient air can moisten filament between layers. Verify the box supports printing mode before setup.
Are these boxes safe for continuous operation?
Most modern units include overheat protection and automatic shut-offs for safety. PTC heaters are generally stable and efficient. However avoid leaving them unattended for extended periods without monitoring especially if using custom settings or older models.
Final Thoughts on Choosing the Best Filament Dryer Box
We highlighted top performers like the Creality X4 for volume, the SUNLU S1 Plus for budget, and the official X4 for premium setups. Each offers distinct advantages depending on your printing needs and material diversity.
Prioritize capacity and temperature range that match your most frequent materials. If you work with engineering filaments ensure your box reaches at least 70 degrees. For hobbyists standard ranges often suffice with cost savings.
Remember to check current availability and verify compatibility with your printer before buying. Regular maintenance of the dryer ensures long-term reliability and consistent print quality for all your projects.