SUNLU Filament Dryer Box 2026 New Upgrade S1 Plus
4.3Editor score
Fast drying with fan design
Visual LCD display screen
High compatibility with filaments
In this guide
3D printing filament is sensitive to moisture which can cause poor print quality and nozzle clogging. A good filament dryer box helps prevent these issues by keeping your spools dry during storage and printing.
We compared ten leading filament dryer boxes based on capacity, heating technology, ease of use, and compatibility with different filament types. Our analysis focuses on real-world performance and user feedback.
Each pick below shows key features, pros, and cons to help you choose the right dryer for your setup. Please note that prices and availability 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
High capacity for four spools
Precise temperature control options
Official Creality Filament Dryer Space Pi X4
4.6Editor score
Dual chamber independent control
Up to 85°C max temp
Energy efficient single or dual
Top 10 Best Filament Dryer Box in 2026 Compared
This side-by-side comparison highlights the key specifications and capabilities of each filament dryer box to help you make an informed decision for your 3D printing needs.
ProductsSpecificationsEditor scorePrice
Best Budget
SUNLU S1 Plus
Max Temp 55°C
LCD Display Screen
Fan Assisted Drying
Compatible With All
4.3Editor score
Editor's Choice
Creality Space Pi X4
Dual Heating Chambers
Max Temp 85°C
Holds 4 Spools
Fast Drying Speed
4.6Editor score
Best Premium
Comgrow SH01
Max Temp 50°C
2 Spool Capacity
Silicone Sealed Design
LCD Touch Buttons
4.4Editor score
Polymaker Polydryer
Hygrometer Included
Airtight Seal Design
Storage Only Option
Supports Up To 1kg
4.4Editor score
SUNLU S2
Max Temp 70°C
Spindle Spinning Feature
Translucent Lid Cover
0 To 99 Hours
4.3Editor score
Comgrow SH02
150W PTC Heater
360 Degree Heating
9 Filament Presets
Max Temp 70°C
4.4Editor score
Creality Space PI 2026
110W PTC Heater
3.7 Inch Screen
12 Filament Presets
Power Off Memory
4.4Editor score
Creality Space PI Plus
Dual Spool Support
Real Time Humidity
3.7 Inch Touch
Max Temp 70°C
4.4Editor score
Creality Space Pi X4L
Dual Independent Chambers
Max Temp 75°C
Holds 4 Spools
Illuminated Window
4.5Editor score
Official Creality X4 DB-05
Max Temp 85°C
Dual Chambers
Energy Saving Modes
Supports Engineering Filaments
4.6Editor score
1. SUNLU S1 Plus – Best Value for Money
SUNLU Filament Dryer Box 2026 New Upgrade S1 Plus
LCD display screen
Fan assisted drying
Max 55°C temperature
High compatibility range
The SUNLU S1 Plus is a budget-friendly filament dryer box designed to solve moisture issues in 3D printing. It holds a solid 4.3 rating from users who appreciate its practical design.
Pros
- Fast drying with fan
- Easy visual display
- Affordable price point
- Adjustable settings
- Compatible with many types
Cons
- Limited max temperature
- Basic features only
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Its standout feature is the fan-assisted drying which speeds up moisture removal. The 2-inch LCD screen clearly shows temperature time and humidity. You can adjust settings for different filament types easily.
Trade-offs include a lower maximum temperature compared to premium models. This limits it to standard filaments. However, for everyday PLA or PETG printing, it is more than enough.
Buy this if you want an affordable solution that keeps filament dry. It is ideal for hobbyists who do not need extreme heating capabilities but still want reliable results.
Fan Assisted Drying
The internal fan helps circulate air to remove water vapor faster than passive heating.
Visual Monitoring
The LCD screen lets you track drying conditions without opening the box.
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2. Creality Space Pi X4 – Best Overall Performance
Creality Filament Dryer Box 4 Spools Space Pi X4
Dual heating chambers
Up to 85°C
Holds 4 spools
Fast drying speed
The Creality Space Pi X4 stands out as a top performer for serious 3D printing users. With a 4.6 rating, it offers dual heating chambers for faster and more efficient drying.
Pros
- Dual independent heaters
- High temperature capability
- Large capacity storage
- Precise touch UI
- Moisture-free storage
Cons
- Higher price point
- Requires more space
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It can reach 85°C which is ideal for engineering filaments like ABS or PC. The touch UI allows precise temperature control. It also supports four standard spools at once.
The main drawbacks are cost and size. It is larger than single spool dryers. But if you print with multiple materials or need high-volume drying, this extra bulk is justified.
We recommend this for users who need professional-grade drying. It balances speed capacity and precision better than most competitors in this category.
Dual Chamber Design
Two independent heaters allow for faster moisture removal and better temperature distribution.
High Temperature Support
Reaching 85°C makes it suitable for advanced filaments that require higher heat to dry.
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3. Comgrow SH01 – Best for Medium Capacity
Comgrow 3D Printer Filament Dryer Box SH01
Max 50°C temp
2 spool capacity
Silicone sealed design
LCD touch buttons
The Comgrow SH01 offers a balanced option for those needing slightly more than a single spool dryer. It holds two 1kg spools and has a solid 4.4 rating from users.
Pros
- Good sealing performance
- Easy to operate
- Adjustable temperature range
- Real-time monitoring
- Affordable cost
Cons
- Lower max temperature
- Limited to two spools
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It features a silicone-sealed enclosure which keeps moisture out effectively. The 2-inch LCD screen provides clear feedback on temperature and humidity. Settings are easy to adjust.
The max temperature of 50°C may be too low for some advanced filaments. But it works well for common types. The build quality is good for the price.
Choose this if you print with PLA or PETG regularly. It provides reliable drying without the complexity or cost of larger systems.
Sealed Environment
Silicone cable sheaths and seals prevent moisture re-absorption during storage.
Monitoring
Real-time display lets you see conditions at a glance while the unit runs.
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4. Polymaker Polydryer – Best Passive Storage Option
Polymaker Polydryer Filament Storage Box
Built-in hygrometer
Airtight design
Supports up to 1kg
Feeding while sealed
The Polymaker Polydryer is designed more for storage than active drying. It comes with a built-in hygrometer to track humidity levels. It has a good 4.4 rating.
Pros
- Hygrometer included
- Airtight seal
- Can print while sealed
- Compact design
- Easy to use
Cons
- No active heating
- Requires desiccants
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Its sealed enclosure helps keep filament dry between prints. You can feed filament without breaking the seal. This reduces exposure to humid air.
Since it does not have active heating, you need desiccants for best results. It is not for reviving wet filament. But it is great for maintenance.
Buy this if you mainly want to store filament correctly. It is simple effective and helps extend the life of your spools.
Hygrometer Feature
The built-in hygrometer helps you monitor humidity without guesswork.
Sealed Printing
Feeding while sealed prevents moisture from entering during short printing pauses.
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5. SUNLU S2 – Best for Reviving Old Filament
SUNLU Filament Dryer S2
Max 70°C temp
Spindle spinning feature
Translucent lid
0 to 99 hours
The SUNLU S2 focuses on reviving old or damp filament for reuse. It has a 4.3 rating from users who want to save money on material costs.
Pros
- Revives damp filament
- Spindle for even drying
- Large capacity
- Translucent lid
- High max temp
Cons
- Basic interface
- No humidity sensor
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Its spindle feature spins the filament for even heat exposure. The translucent lid lets you check filament without opening. It supports a large spool capacity.
It lacks a humidity sensor which limits monitoring. But the high temp of 70°C helps with tough filaments. It is very practical for restoration.
Choose this if you have leftover filament to reclaim. It is simple to use and gets the job done efficiently.
Spindle Mechanism
The spindle ensures the filament spins for consistent drying results.
High Temp Capability
Up to 70°C allows drying a wide range of common 3D printing materials.
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6. Comgrow SH02 – Best for Multiple Filament Types
Comgrow Filament Dryer Box SH02
9 filament presets
360 degree heating
Max 70°C temp
Safety protection
The Comgrow SH02 is built for users who switch between many filament types. It offers one-key settings for nine different filaments. It has a 4.4 rating.
Pros
- One key presets
- Fast PTC heating
- Safety features
- Large capacity
- Sealed design
Cons
- Learning curve
- Fan noise
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Its 150W PTC heater provides fast 360-degree heating. The sealed design keeps moisture out. Safety features protect against overheating and fan failure.
The presets simplify the process but may not be perfect for all brands. It is still very efficient. The fan may produce some noise during operation.
Buy this if you print with varied materials. It saves time setting temperatures manually and works for two spools.
Filament Presets
Nine preset options let you start drying quickly for common materials.
PTC Heater
The PTC heater heats up quickly for uniform drying throughout the box.
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7. Creality Space PI 2026 – Best for Ease of Use
2026 New Creality Space PI Filament Dryer
110W PTC heater
3.7 inch screen
12 filament presets
Power-off memory
The Creality Space PI 2026 emphasizes user experience with a large touchscreen. It has a 4.4 rating from users who value simplicity. It supports 12 filament presets.
Pros
- Large touch screen
- Many presets
- Power-off memory
- Even heating
- Easy operation
Cons
- Single spool limit
- Mid-range cost
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Its 3.7-inch screen makes settings easy to adjust. Power-off memory saves your last settings after a cut. The PTC heater ensures even heat distribution.
It is limited to one spool which may not suit all users. But the ease of use is a major plus. The interface is intuitive.
Choose this if you want a simple and efficient dryer. It works well for daily printing tasks and saves setup time.
Touchscreen Interface
A large screen simplifies navigating settings and monitoring progress.
Power Memory
Settings are saved after power loss so you do not need to reset.
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8. Creality Space PI Plus – Best Dual Spool Choice
2026 New Creality Space PI Filament Dryer Plus
Dual spool support
Humidity monitor
3.7 inch screen
12 filament presets
The Creality Space PI Plus adds dual spool support to the previous model. It has a 4.4 rating and includes real-time humidity monitoring. It is very user-friendly.
Pros
- Supports two spools
- Real-time humidity
- Easy to use
- Large screen
- Efficient heating
Cons
- Limited max temp
- Size can be large
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You can dry two spools at once which saves time. The screen shows humidity so you can track conditions. It supports 12 preset filament types.
The max temp is 70°C which is good for most but not all. It is still a solid choice for versatility. The design is practical.
Buy this if you need to dry two spools easily. It combines the benefits of the single model with more capacity.
Dual Spool Support
Two spools can be dried simultaneously for faster turnaround times.
Humidity Monitor
Real-time humidity display helps ensure filament stays in optimal condition.
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9. Creality Space Pi X4L – Best for High Volume
Creality Filament Dryer Box 4 Spools Space Pi X4L
Dual heating chambers
Max 75°C temp
Holds 4 spools
Illuminated window
The Creality Space Pi X4L is designed for high-volume printing needs. It holds four standard 1kg spools and has a 4.5 rating. It features dual heating chambers.
Pros
- Large capacity
- Dual chambers
- High temperature
- Sealed design
- Illuminated window
Cons
- Higher price
- Footprint size
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It can reach 75°C to handle engineering filaments effectively. The illuminated window lets you check spools without opening. It maintains humidity during pauses.
It is larger and pricier than others. But if you print with many spools, it is worth it. The efficiency is excellent.
Choose this if you run a busy print shop or studio. It supports large batches and keeps filament in top condition.
Dual Chambers
Two chambers allow for independent or combined drying of multiple spools.
Illuminated Window
See inside the box without opening it to maintain humidity levels.
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10. Creality Official X4 DB-05 – Best Premium Pick
Official Creality Filament Dryer Space Pi X4 DB-05
Max 85°C temp
Dual independent chambers
Up to 40% energy savings
Supports engineering filaments
The Official Creality X4 DB-05 is the top premium choice for filament drying. It has a 4.6 rating and supports engineering filaments with high temperature.
Pros
- High temp capability
- Dual chambers
- Energy saving modes
- Official product quality
- Efficient drying
Cons
- Premium price
- Requires specific trays
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Dual independent chambers offer flexibility for different material settings. It saves up to 40% energy in single mode. The build quality is robust.
You need specific Creality trays for best results. This adds some constraint. But the performance justifies the cost for pros.
Buy this if you need the best available drying solution. It is ideal for advanced printing and engineering material needs.
Energy Saving Modes
Single chamber operation saves energy without sacrificing drying quality.
Dual Independent Control
Each chamber has its own heater for precise temperature 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 needs, materials, and workspace. This guide breaks down the key factors to consider.
Capacity and Number of Spools
Consider how many spools you need to dry at once. Single spool dryers are compact and affordable. Larger units hold two to four spools which is better for high-volume users.
Choose capacity based on how often you switch materials or print long jobs.
Temperature Range
Temperature range determines which filaments you can dry. Basic units may reach 50°C for PLA. Advanced ones reach 75°C or 85°C for engineering filaments like ABS or PC.
Ensure the max temperature matches the filaments you use regularly.
Heating Technology
PTC heaters provide faster and more even heating than resistive pads. Some units use fans to circulate air which speeds up drying. Uniform heating prevents hot spots.
Look for units with PTC heaters and fans for best results.
Sealing and Moisture Protection
A tight seal keeps humidity out after drying. Silicone gaskets or snap locks help maintain dry conditions. Some units allow printing without breaking the seal.
Choose models with good seals to protect filament between uses.
Ease of Use
Touchscreens or simple buttons make settings easy. Presets for common filaments save time. Clear displays showing temperature and humidity help monitoring.
Prioritize units with intuitive controls and clear feedback displays.
Safety Features
Safety protections like auto shut-off or fan failure alarms prevent damage. Overheating protection is crucial given the heat involved. Reliable safety features protect your printer.
Check for built-in safety systems before purchasing any unit.
Price and Value
Prices range from budget-friendly to premium. More features cost more. Consider how much value drying speed and capacity add to your printing workflow.
Balance cost with the benefits you need for your printing setup.
Brand and Support
Reputable brands offer better quality and support. Check warranty terms and customer service availability. Good support helps if issues arise.
Select a trusted brand to ensure reliable long-term performance.
How to Use and Care for Your Filament Dryer Box
Place the filament spool inside the dryer and close the lid securely. Ensure the filament outlet is clear so the material can feed smoothly. If your printer has different extruder positions, adjust the tube path accordingly.
Set the temperature and time based on the filament type. Use presets if available or refer to the material's recommended drying temperature. Start the unit and monitor the display until the drying cycle finishes.
Keep the seals clean to maintain moisture protection. Check the desiccants if your unit uses them and replace when needed. Store the dryer in a dry place when not in use to extend its lifespan.
Frequently Asked Questions
How long does it take to dry filament in a dryer box?
Drying time varies by filament and moisture level but typically takes 4 to 12 hours. Units with fans or dual heaters are faster. It is best to dry thoroughly to avoid issues during printing.
Can filament dryer boxes be used for storage as well?
Yes many units function as storage too. Sealed designs keep filament dry between prints. Some allow printing without opening the box which reduces moisture exposure.
Do I need desiccants if I use a filament dryer?
If the dryer has active heating you may not need desiccants during drying. For storage after drying desiccants help maintain dry conditions. Check the product instructions for best practices.
What temperature should I set for drying PLA?
PLA usually needs 40°C to 50°C. Higher temperatures may warp the filament. Start with lower settings and refer to the manufacturer recommendations for your specific PLA brand.
Can I dry different filaments at the same time?
Units with dual chambers allow drying different materials at different temps. Single chamber units dry everything at the same temp. Use one material per cycle unless your unit supports multiple temps.
How do I know if my filament is dry enough?
Listen for popping or clicking sounds when printing. Smooth surfaces and consistent extrusion mean it is dry. Using a hygrometer inside the box helps confirm humidity is low enough.
Are filament dryer boxes compatible with all 3D printers?
Most units work with any FDM printer. Ensure the outlet hole fits your printer setup. Universal designs with adjustable tubing accommodate various extruder positions.
Do filament dryers work for engineering filaments like ABS?
Yes units reaching 75°C or 85°C are designed for ABS and similar materials. Check the max temp before purchasing to ensure it matches your engineering filament needs.
Final Thoughts on Choosing the Best Filament Dryer Box
The top picks cover a range of needs from budget-friendly single spool dryers to premium multi-spool systems. The SUNLU S1 Plus is great for starters and the Creality Space Pi X4 offers versatility.
Consider what matters most to you such as temperature range, capacity, or ease of use. Your choice should match your printing frequency and the types of filaments you use.
Before buying check current prices and availability since they change. The right dryer will save money on wasted filament and improve your print quality consistently.