SUNLU Filament Dryer Box 2026 New Upgrade S1 Plus
4.3Editor score
Fast drying with fan
Visual LCD display
High compatibility
In this guide
Filament dryer boxes are essential tools for any serious 3D printing enthusiast. They prevent moisture absorption that causes poor print quality. Choosing the right one ensures your materials remain dry and ready for use.
We compared ten leading models based on capacity, heating technology, and user feedback. Our analysis covers everything from basic storage to advanced dual-chamber systems. This list helps you find the perfect fit for your setup.
Each pick highlights key features and potential trade-offs for informed decisions. Prices and availability fluctuate frequently across online retailers. Always verify current details before purchasing to ensure you get the best value.
Top 3 Picks for Best Filament Dryer Box
Creality Filament Dryer Box 4 Spools Space Pi X4
4.6Editor score
Dual heating chambers
200W PTC heaters
Spacious organized storage
Official Creality Filament Dryer Space Pi X4 DB-05
4.6Editor score
Independent temperature control
Energy efficient modes
Engineering filament support
Top 10 Best Filament Dryer Box in 2026 Compared
The following table provides a side-by-side comparison of all ten featured filament dryer box models. It highlights key specifications to help you quickly identify the best match for your specific printing needs and budget constraints.
ProductsSpecificationsEditor scorePrice
Best Budget
SUNLU S1 Plus
Fan assisted drying
LCD temperature display
Single chamber design
Up to 55C
4.3Editor score
Editor's Choice
Creality Space Pi X4
Holds 4 spools
Dual independent chambers
200W heating power
Up to 85C
4.6Editor score
Best Premium
Comgrow SH01
Holds 2 spools
Silicone sealed outlet
40 to 50C
2 inch LCD
4.4Editor score
Polymaker Polydryer
Airtight storage box
Built in hygrometer
Desiccant compatible
1kg spool capacity
4.4Editor score
SUNLU S2
Large capacity
Translucent lid
35 to 70C
Touch screen
4.3Editor score
Comgrow SH02
360 degree heater
One key presets
Safety protection
Up to 70C
4.4Editor score
Creality Space PI 2026
110W PTC heater
12 filament presets
48 hour timer
Power off memory
4.4Editor score
Creality Space PI Plus
360 hot air
Real time monitor
Dual spool support
12 presets
4.4Editor score
Creality Space Pi X4L
Dual chambers
Holds 4 spools
Illuminated window
Up to 75C
4.5Editor score
Creality Space Pi X4 DB-05
Independent chambers
Dual chamber modes
Engineering filament support
Up to 85C
4.6Editor score
1. SUNLU S1 Plus – Best Budget Filament Dryer Box
SUNLU Filament Dryer Box 2026 New Upgrade S1 Plus
2 inch LCD screen
35 to 55C
Fan assisted drying
Universal filament fit
The SUNLU Filament Dryer Box S1 Plus offers an accessible entry into active filament drying. With a 4.3 rating it stands out for solving common moisture issues like stringing. Its upgraded design includes a fan to speed up water discharge significantly.
Pros
- Affordable price point
- Fast drying fan
- Clear visual display
- Easy adjustments
- Good customer service
Cons
- Single chamber only
- Limited max temp
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Key strengths include the visual LCD display showing temperature and humidity clearly. Users can adjust settings easily via physical buttons. The high compatibility ensures it works with most common filament types like PLA and PETG effectively.
Trade-offs involve a single chamber design limiting capacity compared to premium models. The maximum temperature caps at 55C which may not suit engineering filaments. However these are acceptable for hobbyists focused on standard materials.
This dryer is ideal for beginners or those needing a cost-effective solution. It provides essential drying features without breaking the bank. We recommend it for general print maintenance and storage needs.
Fast Drying Technology
The built-in fan accelerates moisture removal reducing drying time significantly.
User Friendly Interface
Physical buttons allow quick adjustments without complex menu navigation.
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2. Creality Space Pi X4 – Editor's Choice Filament Dryer Box
Creality Filament Dryer Box 4 Spools Space Pi X4
Holds 4 spools
Dual 200W heaters
Up to 85C
Silicone sealed
The Creality Space Pi X4 sets a high standard for high volume users. Its 4.6 rating reflects excellent performance in removing moisture quickly. Dual independent heating chambers allow drying different materials simultaneously with precision.
Pros
- Holds four spools
- Dual independent chambers
- High temperature support
- Touch UI control
- Sealed enclosure
Cons
- Higher cost
- Requires power source
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Standout features include industry-first touch UI and precise temperature control up to 85C. This unlocks advanced filaments like ABS and PC. The sealed enclosure maintains dryness during printing pauses effectively.
Higher cost and power requirements are notable trade-offs. However the capacity and speed justify the investment for busy workspaces. It balances storage and drying functionality seamlessly for professional use.
This model is perfect for workshops handling multiple print jobs. It ensures filament remains ready for use around the clock. We highly recommend it for serious enthusiasts and small businesses.
Dual Chamber Efficiency
Independent chambers allow different temperatures for different filaments simultaneously.
Advanced Material Support
High temperatures reach 85C for engineering plastics like PC and ASA.
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3. Creality Space Pi X4 DB-05 – Best Premium Filament Dryer Box
Official Creality Filament Dryer Space Pi X4 DB-05
Dual independent heaters
Single or dual modes
85C max temp
Energy efficient
Official Creality filament dryer brings industrial grade drying to home setups. The 4.6 rating confirms its reliability for demanding tasks. Dual chambers enable simultaneous drying of different filament types with custom settings.
Pros
- Independent temp control
- Energy saving modes
- Engineering filament ready
- Four spool capacity
- Official support
Cons
- Premium price tag
- Needs compatible trays
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Features include power-saving modes and high heat up to 85C. This flexibility reduces energy consumption while ensuring thorough drying. The design supports engineering materials like PA and PAHT effectively.
Premium pricing and tray compatibility are considerations for buyers. However the versatility and efficiency offer long-term value. It is built for those prioritizing performance and consistency above all else.
Choose this for professional workflows needing maximum flexibility. It handles high-performance materials with ease. We endorse it as a top choice for serious printing operations.
Power Efficiency
Single chamber mode saves energy when only one filament needs drying.
Material Versatility
Wide temperature range supports standard and high-performance filaments alike.
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4. Comgrow SH01 – Great Sealed Filament Dryer Box
Comgrow SH01 Filament Dryer Box
Holds 2 spools
Teflon tube outlet
Touch buttons LCD
40 to 50C
Comgrow SH01 provides reliable drying for standard printing needs. Its 4.4 rating highlights consistent performance in keeping filament dry. The large inner size comfortably holds two 1kg spools for daily use.
Pros
- Large storage volume
- Good sealing design
- LCD monitoring
- Easy setup
- Support availability
Cons
- Auto shut down feature
- Lower max temp
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Strengths include a silicone cable sheath and Teflon tube for smooth feeding. Real-time monitoring via LCD ensures settings are maintained correctly. The snap button structure ensures good sealing performance during operation.
Auto shut down if work mode is missing can be annoying. The max temperature of 50C limits advanced material drying. These are minor issues for general PLA and PETG users.
This unit is great for small to medium studios. It balances capacity and cost effectively. We suggest it for those needing dependable storage drying functionality.
Spool Capacity
Fits two standard spools allowing bulk drying before print runs.
Seal Integrity
Snap buttons and sealing rings keep moisture out effectively.
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5. Polymaker Polydryer – Moisture Control Filament Dryer Box
Polymaker Polydryer Filament Storage Box
Airtight enclosure
Built-in hygrometer
Desiccant compatible
1kg spool fit
Polymaker Polydryer focuses on passive moisture control and storage. It maintains a 4.4 rating by reducing humidity-related print issues. The design supports printing without breaking the sealed setup permanently.
Pros
- Sealed storage
- Hygrometer included
- Print without breaking seal
- Compact design
- Multi-filament ready
Cons
- No active heater
- Relies on desiccant
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Features include a hygrometer for monitoring storage conditions accurately. The airtight enclosure locks out moisture effectively. It works well with desiccants for longer-term storage needs between prints.
Lack of active heating limits quick drying capabilities. It is best for maintenance rather than rapid revival. Still it offers great convenience for organized workspaces.
Ideal for users with controlled environments needing storage. It keeps spools clean and dry efficiently. We recommend it for maintaining filament quality over time.
Hygiene Monitoring
Built-in hygrometer removes guesswork about storage conditions.
Sealed Printing
Print directly from box without exposing filament to humidity.
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6. SUNLU S2 – Fast Heating Filament Dryer Box
SUNLU Filament Dryer S2
Large capacity size
Translucent lid
0-99 hour timer
Touch screen
SUNLU S2 excels at reviving old damp filaments efficiently. With a 4.3 rating it improves printing effects noticeably. The large capacity accommodates various filament types without crowding.
Pros
- Revives damp filament
- Large capacity
- Spindle ensures spin
- Translucent lid
- Simple usage
Cons
- Requires power
- Single spool
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Strengths include a built-in spindle ensuring continuous spinning for even drying. The translucent lid allows checking filament without opening. Customizing time and temperature is easy via the large touch screen.
Only holds one spool which limits capacity. Needs power to function actively. These trade-offs are fine for single printer setups focusing on quality.
Best for those reviving stored materials often. It simplifies drying steps significantly. We suggest it for upgrading your print quality budget.
Even Drying
Built-in spindle spins filament continuously for uniform results.
Visibility
Translucent lid lets you monitor without breaking the seal.
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7. Comgrow SH02 – One Key Set Filament Dryer Box
Comgrow SH02 Dry Box
Holds 2 spools
150W PTC heater
Safety alarms
Sealing rings
Comgrow SH02 improves on SH01 with faster heating technology. A 4.4 rating reflects improved efficiency and safety features. It holds two 1KG rolls drying simultaneously for wider range needs.
Pros
- Two spool capacity
- Fast PTC heater
- Safety protection
- One key presets
- Multiple seals
Cons
- Fan dependent
- Max 70C
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Key strengths include one-key settings for nine filament types. The 150W PTC heater heats up faster than standard resistors. Intelligent safety protection cuts power if temperature gets too high.
Requires fans to circulate heat which could fail. Max temp is 70C limiting high-performance use. Still it is a robust choice for general applications.
Good for users needing quick drying setups. The presets save time effectively. We recommend it for those valuing safety and convenience.
Fast Heating
PTC heater reaches 70C within 25 minutes quickly.
Safety Features
Alarms sound if fan stops or temp exceeds safe limits.
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8. Creality Space PI 2026 – Advanced PTC Filament Dryer Box
Creality Space PI 2026
110W PTC heater
12 filament presets
3.7 inch screen
48 hour timer
Creality Space PI uses 360 hot air for uniform drying. It holds a 4.4 rating for its even heat distribution. The 110W PTC heater ensures consistent warming without hot spots.
Pros
- 360 hot air
- 12 presets
- Power-off memory
- Touch screen
- Energy saving
Cons
- Single chamber
- Max 70C
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Features include 3.7-inch touch screen and presets for 12 filament types. Power-off memory saves settings after outages. One-key setup simplifies the process for beginners.
Max temp of 70C restricts engineering material use. It is a single chamber design limiting capacity. Still it offers great value for standard printing needs.
Recommended for hobbyists needing reliable drying. The memory feature prevents wasted effort. We suggest it for those valuing ease of use.
Uniform Heating
360 circulation ensures filament dries evenly inside.
Convenience
Power-off memory restores settings automatically after restarts.
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9. Creality Space PI Plus – Dual Spool Filament Dryer Box
Creality Space PI Plus
360 hot air
Humidity monitor
Adjustable temp
Dual spool
Space PI Plus offers dual spool support with even heating. A 4.4 rating shows consistent performance for general needs. 360 hot air circulation ensures uniform drying across both spools.
Pros
- Dual spool support
- Real-time humidity
- Even heating
- Adjustable settings
- Simple touch UI
Cons
- Lower max temp
- Price range
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Key strengths include real-time humidity monitoring for transparency. Adjustable temperature allows customization for different materials. The touch screen simplifies interaction without complex menus.
Max temp caps at 70C limiting advanced uses. Still it balances features well for general users. Trade-offs are acceptable for the dual spool convenience.
Ideal for dual print setups needing consistent results. It monitors humidity actively to prevent errors. We recommend it for balanced drying needs.
Humidity Visibility
Real-time monitor helps track moisture levels accurately.
Dual Capacity
Supports two spools simultaneously for efficient workflows.
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10. Creality Space Pi X4L – Rapid Drying Filament Dryer Box
Creality Space Pi X4L
Holds 4 spools
Dual 200W heaters
Illuminated window
Up to 75C
Space Pi X4L expands capacity with dual independent heating chambers. A 4.5 rating indicates high performance for volume users. It holds 4 spools efficiently for high-demand printing.
Pros
- 4 spool capacity
- Dual chambers
- Rapid drying
- Illuminated window
- High temp
Cons
- Requires power
- Larger footprint
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Features include dual 200W heaters for rapid moisture removal. The illuminated window allows monitoring without breaking humidity control. 75C max temperature unlocks more engineering filaments.
Larger size and power needs are trade-offs. However the capacity and speed are unmatched. It is perfect for busy workshops handling multiple jobs.
Best for teams needing rapid high-volume drying. It supports diverse filaments well. We recommend it for maximizing print readiness.
High Volume
Holds 4 spools to support multi-printer environments.
Rapid Cycle
Dual 200W heaters remove moisture quickly.
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Buying Guide – How to Choose the Best Filament Dryer Box
Selecting the right filament dryer box requires evaluating key features that match your printing volume and material types. This guide outlines critical factors to consider for an informed decision.
Drying Capacity
Consider how many spools you need to dry at once. Single spool units are compact and cheaper. Multi-spool models offer efficiency for busy environments but cost more.
Choose capacity based on your typical print volume and spool inventory.
Temperature Range
Standard filaments like PLA need lower temperatures around 50C. Engineering materials like ABS or PC require higher heat up to 85C.
Ensure the max temperature meets your material needs to prevent damage.
Heating Technology
PTC heaters warm up faster and more evenly than resistive pads. 360-degree air circulation ensures no hot spots occur inside the box.
Look for PTC technology to ensure uniform drying results consistently.
Seal Quality
Effective sealing prevents humidity from re-entering during storage. Silicone rings and airtight enclosures are essential for maintaining dry conditions.
Prioritize models with robust seals to protect your filament investment.
Control Interface
Touch screens and digital displays make setting precise temperatures easier. Physical buttons can be simpler for older users but offer less detail.
Select an interface that balances usability with required functionality.
Safety Features
Overheating protection and auto shutoff mechanisms prevent equipment damage. Alarms for fan failure add extra security during operation.
Safety features are vital for unattended drying sessions overnight.
Filament Compatibility
Check if the dryer supports your specific filament diameters. Most units handle 1.75mm and 2.85mm but some differ.
Verify compatibility with your preferred brands to avoid feeding issues.
Budget Constraints
Prices range from basic passive boxes to advanced dual-chamber systems. Set a realistic budget while keeping core features in mind.
Invest more only for features that directly benefit your workflow.
How to Use and Care for Your Filament Dryer Box
To start, ensure the dryer is placed on a level stable surface away from drafts. Plug it into a grounded outlet and check all seals are properly aligned before adding spools.
Set the temperature and timer according to your filament type. Wait for the unit to reach the target temperature before loading moist filament to prevent condensation inside the box.
Regularly clean the filter or vents if available to maintain airflow. Monitor the humidity display and replace desiccant packs if included to keep the environment dry.
Frequently Asked Questions
Do filament dryer boxes work for all filament types?
Most dryers work for PLA PETG TPU ABS and PA. Engineering filaments like PC require higher temperatures. Check the max temperature rating to ensure compatibility with your specific spools.
How long should you run a filament dryer?
Drying times vary from 4 to 24 hours depending on moisture levels. Most units have timers for automatic shut-off. Damp filament often needs longer cycles than recently stored spools.
Can you print while drying filament?
Yes many boxes allow feeding filament while sealed. This prevents moisture reabsorption during printing pauses. Look for models with smooth cable exits and sealing grommets for best results.
Is active drying better than passive storage?
Active drying removes moisture quickly. Passive storage keeps it dry using silica gel. Active dryers are essential for restoring old damp filament before printing.
How do you clean the dryer after use?
Wipe the interior with a dry cloth to remove dust. Avoid water near electronics or heating elements. Inspect sealing rings regularly to maintain proper airtight performance over time.
What if my filament still prints poorly?
Check for leaks in the sealing gaskets. Ensure you set the correct temperature for your material type. Sometimes multiple drying cycles are needed for severely damp spools.
Final Thoughts on Choosing the Best Filament Dryer Box
We reviewed ten top models including the SUNLU S1 Plus and Creality Space Pi X4. Each offers unique strengths for varying user needs and printing volumes.
Prioritize temperature range and capacity based on your filament types. Safety features and ease of use should also guide your final selection decision.
Prices fluctuate so always check current details before buying. Select the model that best balances cost with your essential drying requirements.