SUNLU S1 Plus
4.3Editor score
Affordable entry-level pricing
Fan-assisted moisture removal
Simple LCD interface control
In this guide
Keeping 3D printer filament dry is essential for consistent results and avoiding common issues like stringing or poor adhesion. A quality filament dryer box ensures your materials stay protected from moisture between prints or during long drying sessions.
We evaluated ten leading models based on heating speed, capacity, sealing quality, and ease of use. Our comparison covers options for hobbyists and professionals seeking reliable protection for PLA, PETG, ABS, and other moisture-sensitive filaments.
Each pick highlights key features, performance strengths, and potential trade-offs to help you find the right fit. Please note that availability and terms may change, so verify current details before making your final decision today.
Top 3 Picks for Best 3D Printer Filament Dryer Box
SUNLU S4
4.7Editor score
Holds four spools simultaneously
350W fast heating system
Smart auto humidity control
Creality Space Pi X4
4.6Editor score
Dual independent heating chambers
High temperature capability up to 85 degrees
Touch screen UI control
Top 10 Best 3D Printer Filament Dryer Box in 2026 Compared
The following comparison table provides a side-by-side overview of key specifications for all ten models evaluated in this guide to help you quickly identify the best fit for your needs.
ProductsSpecificationsEditor scorePrice
Editor's Choice
Comgrow Filament Dryer
Holds two spools
50 degrees Celsius max
LCD touch buttons
Sealed with silicone
4.4Editor score
Editor's Choice
Creality Space Pi X4
Holds four spools
85 degrees Celsius max
Dual heating chambers
Touch UI display
4.6Editor score
Best Budget
Creality Space Pi SE
Holds one spool
65 degrees Celsius max
360 degree heating
Insulated inner wall
4.4Editor score
Creality Space PI
Holds one spool
70 degrees Celsius max
48 hour timer
Power-off memory
4.4Editor score
SUNLU S1 Plus
Holds one spool
55 degrees Celsius max
Fan assisted drying
LCD display screen
4.3Editor score
Polymaker Polydryer
Holds one spool
No active heating
Desiccant support
Hygrometer included
4.4Editor score
SUNLU SP2
Holds two spools
70 degrees Celsius max
Detachable storage base
250W PTC heater
4.4Editor score
Sovol SH02
Holds two spools
70 degrees Celsius max
150W PTC heater
Dual filament holes
4.3Editor score
SUNLU S4
Holds four spools
50 degrees Celsius max
350W PTC heater
Three internal fans
4.7Editor score
SUNLU S1 Plus White
Holds one spool
55 degrees Celsius max
Ultra quiet operation
99 hour timer
4.7Editor score
1. Comgrow Filament Dryer – Reliable Entry-Level Drying
Comgrow Filament Dryer
Holds two spools
40 to 50 degrees
LCD screen display
Silicone cable outlet
The Comgrow 3D Printer Filament Dryer Box is a solid entry-level option for users seeking basic moisture protection. With a rating of 4.4, it offers reliable performance for drying PLA and ABS spools during printing sessions without complex features.
Pros
- Affordable price point
- Simple button operation
- Effective sealing design
- Compatible with most filaments
Cons
- Limited temperature range
- Basic user interface
We may earn a commission when you buy through this link, at no additional cost to you.
Its large storage volume accommodates two rolls of 1kg spools, making it suitable for multi-color setups or users who print frequently. The adjustable temperature range between 40 and 50 degrees Celsius ensures safe drying for common materials without risking heat damage.
While the interface is straightforward with touch buttons and an LCD screen, it lacks advanced automation found in higher-end models. Users must manually set drying times and temperatures, though the system shuts down automatically after three minutes if not activated.
This dryer is best suited for hobbyists who need a cost-effective solution to prevent stringing and clogging. Its sealed outlet design keeps moisture out when not in use, ensuring your filament stays ready for the next project.
Effective Moisture Management
The dryer actively removes moisture from filaments to avoid layer migration and poor adhesion issues during printing.
User-Friendly Interface
Real-time monitoring of temperature and humidity allows users to track drying progress clearly on the screen.
We may earn a commission when you buy through this link, at no additional cost to you.
2. Creality Space Pi X4 – High-Capacity Premium Drying
Creality Space Pi X4
Holds four spools
Up to 85 degrees
Dual heating chambers
Illuminated window
The Creality Space Pi X4 stands out as a premium choice for high-volume users needing to dry multiple spools simultaneously. Rated at 4.6, it combines a spacious storage design with dual heating chambers to deliver rapid moisture removal for various filament types.
Pros
- High capacity storage
- Fast drying speed
- Advanced temperature control
- Dual heating efficiency
Cons
- Higher price point
- Larger footprint
We may earn a commission when you buy through this link, at no additional cost to you.
With a maximum temperature of 85 degrees, this dryer handles advanced materials like ABS and PC that require higher heat settings. The dual independent 200W heating chambers dry filaments 30% faster than single-chamber units, saving valuable time between prints.
The illuminated window allows you to monitor spool status without breaking the humidity seal, maintaining consistent conditions inside. While the touch UI offers precise control, the larger size may require significant desk space in smaller work environments.
Ideal for professionals or serious enthusiasts, this model ensures print-ready filament in hours rather than days. Its ability to maintain humidity during printing pauses makes it a robust solution for long-term filament protection and consistent print quality.
Superior Heating Speed
Dual independent heating chambers remove moisture quickly, reducing wait times for print-ready materials.
Advanced Material Support
Higher temperature capabilities unlock drying options for specialized filaments that standard dryers cannot handle.
We may earn a commission when you buy through this link, at no additional cost to you.
3. Creality Space Pi SE – Efficient Budget Option
Creality Space Pi SE
Holds one spool
45 to 65 degrees
360 degree heating
Knob control
The Creality Space Pi SE offers excellent value with an upgraded PTC solution that heats quickly and evenly. Rated 4.4, it reaches 65 degrees within 15 minutes, making it a quick and efficient choice for standard drying needs.
Pros
- Affordable pricing
- Fast heating speed
- Insulated interior
- No assembly required
Cons
- Single spool capacity
- Basic display
We may earn a commission when you buy through this link, at no additional cost to you.
Its design features built-in fans for 360-degree air circulation, ensuring uniform heating across the spool. Thermal insulation cotton keeps heat in and prevents scalding, while the simple knob interface makes operation straightforward for all users.
Although it only holds one spool, the personalized time and temperature settings allow for tailored drying based on filament type. The countdown timer helps track progress, and the sealed design protects filament during pauses or storage.
This model is perfect for hobbyists who need reliable drying without breaking the budget. Its ability to solve issues like drawing and poor adhesion makes it a solid investment for improving print quality consistently.
Quick Heating Performance
Advanced PTC heating allows the unit to reach target temperatures in just 15 minutes for efficiency.
Safe Operation
Insulation and sealed design protect users and filament from heat while maintaining a dry environment.
We may earn a commission when you buy through this link, at no additional cost to you.
4. Creality Space PI – Versatile Drying Solution
Creality Space PI
Holds one spool
70 degrees Celsius max
48 hour timer
Power-off memory
The Creality Space PI filament dryer combines upgraded PTC technology with user-friendly features like a touch screen and power-off memory. Rated 4.4, it is designed for consistent drying of various filaments including high-performance composites like PA-CF.
Pros
- Power outage memory
- Wide material support
- Touch screen UI
- Energy efficient
Cons
- Single spool only
- Mid-range pricing
We may earn a commission when you buy through this link, at no additional cost to you.
With a max temperature of 70 degrees and a 48-hour timer, this unit supports extended drying sessions for tough materials. The one-key settings for 12 filament types simplify operation, while the memory function saves your configuration during power interruptions.
The 360-degree heating ensures even moisture removal, and the touch screen allows easy switching between Celsius and Fahrenheit. While it only accommodates one spool at a time, its efficiency makes it suitable for sequential drying workflows.
This dryer is ideal for users who value convenience and material versatility. Whether you print with standard PLA or demanding ASA, the reliable sealing and heating performance help maintain high-quality results over time.
Convenient Operation
One-key settings and touch screen controls streamline the drying process for different filament types.
Durable Design
Power-off memory prevents loss of settings during unexpected outages, saving users time and effort.
We may earn a commission when you buy through this link, at no additional cost to you.
5. SUNLU S1 Plus – Compact Drying Box
SUNLU S1 Plus
Holds one spool
35 to 55 degrees
LCD display
Fan-assisted drying
The SUNLU S1 Plus filament dryer box provides a straightforward solution for removing moisture from filament during prints. Rated 4.3, it features an LCD screen to track temperature, time, and humidity with precision and user-friendly button controls.
Pros
- Simple to use
- Visual display
- Compatible with many filaments
- Affordable
Cons
- Lower max temperature
- Single spool capacity
We may earn a commission when you buy through this link, at no additional cost to you.
An upgraded fan design accelerates moisture discharge, helping to reduce issues like stringing and clogging. The adjustable temperature range between 35 and 55 degrees works well for most common materials like PLA and PETG.
The compact size fits easily into most workspaces and supports diameters from 1.75mm to 3.00mm. While it lacks the power of dual-chamber units, its performance remains reliable for hobbyists and light users looking to improve print consistency.
This dryer is best for those prioritizing ease of use and cost-effectiveness. Its ability to protect filament from humidity ensures smoother surfaces and better layer adhesion for a wide range of printing projects.
Visual Monitoring
The LCD display offers clear visibility of drying conditions, allowing real-time adjustments.
Effective Drying
Fan-assisted moisture removal speeds up the drying process and improves overall print results.
We may earn a commission when you buy through this link, at no additional cost to you.
6. Polymaker Polydryer – Passive Protection Box
Polymaker Polydryer
No active heating
Desiccant compatible
Hygrometer included
Sealed enclosure
The Polymaker Polydryer is a unique storage box that focuses on passive protection rather than active heating. Rated 4.4, it helps keep moisture-sensitive filament in optimal condition between uses through a combination of sealing and desiccant support.
Pros
- No power needed
- Built-in hygrometer
- Compact design
- Sealed storage
Cons
- Not for active drying
- Requires desiccants
We may earn a commission when you buy through this link, at no additional cost to you.
Built-in hygrometer allows you to track humidity levels without guesswork, ensuring a suitable environment for your spools. You can print directly from the box without breaking the seal, maintaining moisture protection during pauses and overnight storage.
While it does not actively dry filaments, it serves as an excellent companion for pre-dried material. Its multi-filament ready design supports various types including nylon and ASA, and fits neatly into most workspaces.
This box is ideal for users who have a separate dryer but need reliable storage. By reducing exposure to humid air, it helps maintain consistent day-to-day printing results and protects your filament investment effectively.
Passive Protection
Sealed enclosure and desiccant support keep moisture out to prevent filament degradation over time.
Easy Monitoring
Integrated hygrometer provides clear humidity readings so you can maintain optimal storage conditions.
We may earn a commission when you buy through this link, at no additional cost to you.
7. SUNLU SP2 – Fast Heating Dual-Spool Dryer
SUNLU SP2
Holds two spools
Up to 70 degrees
250W PTC heater
Detachable base
The SUNLU SP2 combines efficient drying with storage in one versatile package. Rated 4.4, it heats up to 70 degrees within 15 minutes, using a 250W PTC element to ensure even moisture removal across two spools simultaneously.
Pros
- Fast 15-minute heating
- Large spool capacity
- Dual filament holes
- HD touch screen
Cons
- Higher cost than basic units
- Larger footprint
We may earn a commission when you buy through this link, at no additional cost to you.
Its detachable base allows you to separate the drying function from storage, offering flexibility for different workflows. The sealed lid and gaskets protect filament effectively, while the touch screen displays real-time humidity and temperature data clearly.
With rollers supporting various spool sizes including 3kg options, it adapts well to different material needs. The quiet operation and safety features make it a practical choice for users who want reliable performance without excessive noise.
This model is best for those drying larger spools or multiple filaments regularly. Its all-in-one design simplifies the workflow by combining drying and storage, ensuring your material stays ready for any printing project.
Dual-Spool Efficiency
Accommodates two 1kg spools with efficient heating, reducing downtime between prints significantly.
Versatile Storage
Detachable base and multiple roller options support various spool sizes for maximum flexibility.
We may earn a commission when you buy through this link, at no additional cost to you.
8. Sovol SH02 – Sealed Dual-Spool Dryer
Sovol SH02
Holds two spools
Up to 70 degrees
150W PTC heater
One-key settings
The Sovol SH02 is a sealed filament dryer designed to dry two spools simultaneously with improved efficiency. Rated 4.3, it features a 150W PTC heater that reaches 50 degrees in just 7 minutes, ensuring quick preparation for printing.
Pros
- Dual spool capacity
- Enhanced sealing
- One-key presets
- Fan-assisted heating
Cons
- Mid-range price
- Basic control interface
We may earn a commission when you buy through this link, at no additional cost to you.
Improved sealing materials protect your filament even when powered off, preventing moisture and dirt from entering. One-key temperature settings for nine different filament types simplify operation, while the alarm system warns you if the fan stops rotating.
The dryer supports various extruder positions, making it versatile for different printer setups. While it lacks advanced digital features, its practical design focuses on core functionality to maintain consistent drying performance.
This model is ideal for users needing reliable dual-spool drying without extra cost. Its safety protections and sealed storage ensure your filament remains dry and protected, reducing the risk of print failures due to humidity.
Quick Heating
Efficient PTC heater allows rapid heating to target temperatures, reducing wait times for users.
Safety Features
Smart protection systems alert you to fan issues, preventing damage to the PTC module.
We may earn a commission when you buy through this link, at no additional cost to you.
9. SUNLU S4 – Large-Scale Multi-Spool Dryer
SUNLU S4
Holds four spools
350W PTC heater
Triple fan system
Auto humidity control
The SUNLU S4 is a next-generation filament dryer designed for continuous and multi-color printing. Rated 4.7, it holds four spools simultaneously, enabling long printing sessions without manual material changes or interruptions.
Pros
- High capacity storage
- Fast heating speed
- Auto humidity regulation
- Triple fan uniformity
Cons
- Larger size
- Higher cost
We may earn a commission when you buy through this link, at no additional cost to you.
A powerful 350W PTC heater ensures rapid heating, while three internal fans maintain consistent temperatures within plus or minus 3 degrees. Smart auto humidity control adjusts drying cycles automatically to prevent over-drying and maintain ideal moisture levels.
Triple security layers protect your filament and equipment from temperature spikes, ensuring safe operation. The universal compatibility supports connection to multiple printers, making it a versatile addition for advanced workflows.
This dryer is best for serious enthusiasts or professionals printing multiple colors. Its efficiency and capacity reduce downtime significantly, ensuring your filament stays dry and ready for uninterrupted production runs.
Massive Capacity
Holding four spools simultaneously enables multi-color printing without manual filament changes.
Smart Automation
Auto humidity control manages drying cycles to maintain optimal moisture levels effortlessly.
We may earn a commission when you buy through this link, at no additional cost to you.
10. SUNLU S1 Plus White – Quiet Drying Option
SUNLU S1 Plus White
Holds one spool
35 to 55 degrees
Ultra quiet operation
99 hour timer
The SUNLU S1 Plus White offers a sleek and quiet solution for drying 3D printer filament during use. Rated 4.7, it features ultra-quiet operation under 10dB, making it ideal for office or home environments where noise is a concern.
Pros
- Quiet operation
- Personalized settings
- User-friendly design
- Bright LCD screen
Cons
- Single spool only
- White color shows dust
We may earn a commission when you buy through this link, at no additional cost to you.
Personalized temperature and time settings allow you to tailor drying conditions for various filament types and ambient humidity. The bright LCD screen clearly displays data, and the two-roller design enables printing while drying without issues.
With a timer range up to 99 hours, it accommodates both quick pre-drying and long-term moisture removal. Its compact design supports spools up to 3mm diameter, fitting most standard materials on the market effectively.
This model is perfect for users valuing a quiet workspace and reliable performance. By removing moisture efficiently, it helps reduce stringing and clogging, improving overall print quality and consistency for all your projects.
Ultra-Quiet Design
Operates at less than 10dB, ensuring minimal disturbance to your workspace environment.
Flexible Drying
Adjustable time and temperature settings provide tailored solutions for different filament types.
We may earn a commission when you buy through this link, at no additional cost to you.
Buying Guide – How to Choose the Best 3D Printer Filament Dryer Box
Selecting the right filament dryer involves evaluating heating speed, capacity, sealing quality, and features to match your printing needs.
Capacity and Size
Determine how many spools you need to dry simultaneously. Models range from single-spool units to large boxes holding four or more, affecting desk space and workflow efficiency.
Choose a size that fits your workspace while accommodating your typical print volume and material variety.
Temperature Range
Higher maximum temperatures allow drying of advanced materials like ABS, PC, and Nylon. Ensure the unit supports at least 60 degrees for common filaments and up to 85 degrees for tougher composites.
Check the adjustable range to ensure it aligns with your specific material requirements and safety standards.
Heating Speed
Fast heating reduces waiting time before printing. Look for models with PTC heaters that reach target temperatures within 15 minutes or less for efficient workflow.
Quick heating helps maintain productivity by minimizing downtime between drying and printing.
Sealing Quality
Effective sealing prevents moisture re-absorption during storage. Features like silicone outlets, tight latches, and gaskets are essential for maintaining a dry environment inside the box.
A well-sealed dryer protects your investment and ensures consistent print quality over time.
User Interface
Clear displays and intuitive controls simplify operation. LCD screens showing temperature and humidity help track drying progress accurately.
Touchscreens or knob controls allow easy adjustments without interrupting your printing workflow.
Safety Features
Safety mechanisms like overheating protection and auto shutoff prevent damage to filament and equipment. Reliable units often include alarms or sensors to alert you of issues.
Prioritize models with multiple safety layers to ensure safe operation around sensitive materials.
Power Efficiency
Energy-efficient heaters reduce electricity costs. Look for models with optimized heating elements and timers that avoid unnecessary energy use.
Efficient designs help keep operating costs manageable during long drying sessions.
Compatibility
Ensure the dryer supports your filament diameter, typically 1.75mm or 2.85mm. Also check if it fits your printer configuration for seamless feeding during prints.
Universal compatibility ensures you can use the dryer with your existing setup without modifications.
How to Use and Care for Your 3D Printer Filament Dryer Box
Place your filament spool inside the dryer and secure it on the rollers or holders. Ensure the spool is positioned correctly so the filament feeds smoothly during drying.
Set the temperature and time according to your filament type. Use recommended settings to avoid overheating and ensure effective moisture removal without damaging the material.
Close the lid securely to maintain a dry environment. Monitor the humidity display and let the dryer run until the desired level is reached before printing.
Frequently Asked Questions
Why is drying filament important for 3D printing?
Drying filament removes moisture that can cause stringing, clogging, and poor layer adhesion. Moisture absorbs into the material and expands during printing, leading to inconsistent extrusion and surface defects.
How long should filament be dried before printing?
Most filaments need 3 to 6 hours of drying depending on their moisture content. Humid environments may require longer times, while pre-dried spools may only need a quick refresh.
Can I print while the filament is drying?
Yes, most filament dryers allow you to print directly while the spool is inside. This ensures the filament remains dry throughout the print, preventing moisture re-absorption during pauses.
Do I need to replace desiccants in the dryer?
If your dryer uses desiccants, they may need replacement when saturated with moisture. Some models include reusable containers that you can regenerate by heating them separately.
What temperature is best for PLA filament?
PLA typically requires drying between 40 and 55 degrees Celsius. Higher temperatures can warp the material, so stick to recommended settings for optimal results.
Are all filament dryers compatible with 3D printers?
Most modern dryers support standard diameters like 1.75mm. Check compatibility with your printer's extruder position to ensure smooth feeding and prevent tangling.
How do I know when my filament is dry?
Monitor the humidity level displayed on the dryer. Most units have target ranges, and some include visual indicators or timers to help you confirm dryness.
Does drying filament affect its shelf life?
Proper drying extends shelf life by preventing moisture damage. Storing dried filament in sealed bags after drying helps maintain quality between printing sessions.
Final Thoughts on Choosing the Best 3D Printer Filament Dryer Box
Our top picks highlight versatile options like the SUNLU S4 for capacity and the Creality Space Pi X4 for advanced heating. The Comgrow and SUNLU S1 Plus offer budget-friendly choices without sacrificing essential performance.
Prioritize models with strong sealing, fast heating, and user-friendly interfaces to maximize print quality. Consider your typical filament types and volume to find the right balance of features and cost.
Remember to verify current pricing and availability before purchase. These models provide excellent value for maintaining dry filament and improving your overall 3D printing results.