SUNLU S1 Plus
4.7Editor score
Quiet operation under 10dB
Large 2-inch LCD display
Adjustable time up to 99 hours
In this guide
Moisture is the silent killer of high-quality 3D prints, causing stringing and layer adhesion failures. A dedicated dryer box ensures your filament stays dry during printing and storage for consistent results.
We evaluated ten top models based on heating speed, temperature range, capacity, and sealing quality. Our analysis focuses on real-world performance and user feedback to highlight the most reliable options.
Each pick includes detailed specs and pros and cons to match your specific printing needs. Keep in mind that prices fluctuate frequently, so verify the current offer before making your final purchase decision today.
Top 3 Picks for Best 3D Printer Filament Dryer Box
SUNLU S4
4.7Editor score
Holds four 1kg spools
Triple fan uniform drying
Smart auto humidity control
Creality Space Pi X4
4.6Editor score
Dual heating chambers
Touch UI for preset scenes
Holds four standard spools
Top 10 Best 3D Printer Filament Dryer Box in 2026 Compared
This side-by-side comparison highlights the key specifications of every model to help you make an informed decision based on capacity and drying efficiency.
ProductsSpecificationsEditor scorePrice
Editor's Choice
Comgrow Dryer Box
Max temp 50C
Holds 2 spools
LCD touch controls
4.4Editor score
Editor's Choice
Creality Space Pi X4
Dual heating chambers
Max temp 85C
Holds 4 spools
4.6Editor score
Best Budget
Creality Space PI SE
Heats to 65C
Built-in fan
Adjustable time
4.4Editor score
Creality Space PI Dryer
3.7-inch touch screen
48 hours timer
12 filament presets
4.4Editor score
SUNLU S1 Plus
Adjustable temp 35-55C
Fan-assisted drying
Holds 1 spool
4.3Editor score
Polymaker Polydryer
Desiccant supported
Hygrometer included
Sealed storage only
4.4Editor score
SUNLU SP2
250W PTC heater
Holds up to 3kg
Detachable storage base
4.4Editor score
Sovol SH02
150W PTC heater
9 filament presets
Holds 2 spools
4.3Editor score
SUNLU S4
350W PTC heater
Holds 4 spools
Triple fan system
4.7Editor score
SUNLU S1 Plus White
Holds 1 spool
Ultra quiet fan
Manual time setting
4.7Editor score
1. Comgrow Dryer Box – Best for Basic Drying
Comgrow 3D Printer Filament Dryer Box
Holds 2 spools
Max temp 50C
6-12 hours time
LCD touch screen
The Comgrow 3D Printer Filament Dryer Box offers a practical solution for keeping standard filaments dry during storage and printing. With a rating of 4.4 stars, it delivers reliable performance for users needing an entry-level dehydrator.
Pros
- Sealed design keeps moisture out
- Simple touch controls
- Compatible with common diameters
- Good value for basic drying
- Silicone sheath for cables
Cons
- Limited temperature range
- Shut down after 3 mins idle
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Its internal size accommodates two 1kg spools comfortably, making it suitable for small batch printing. The adjustable temperature range between 40C and 50C covers most common materials like PLA and ABS effectively.
One limitation is the auto shut down feature if the work mode is not displayed, which might interrupt long sessions without manual monitoring. Additionally, the maximum temperature limit may slow drying for moisture heavy materials.
For hobbyists printing with standard PLA or ABS, this box provides necessary protection against humidity without complexity. It is a solid choice for maintaining filament integrity during short to medium print projects.
Effective Moisture Removal
The heating element actively removes moisture during printing to prevent clogging and layer migration issues commonly caused by damp filaments.
Sealed Storage Protection
A snap button upper cover and silicone cable sheath ensure the box remains sealed when not actively drying to keep consumables dry.
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2. Creality Space Pi X4 – Best Premium Capacity
Creality Filament Dryer Box 4 Spools
Holds 4 spools
Dual 200W heaters
Max temp 85C
Touch UI presets
The Creality Space Pi X4 stands out as a premium choice with its dual heating chambers and high capacity. A rating of 4.6 reflects its ability to handle high-volume users efficiently.
Pros
- Dual chambers speed up drying
- Supports high temp materials
- Holds large capacity spools
- Illuminated window monitor
- Precise temp control
Cons
- Higher price point
- Requires more desk space
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Its ability to reach 85C allows drying of advanced materials like PC and ASA which lower temperature units cannot process. The dual 200W heaters remove moisture thirty percent faster than single chamber alternatives.
While the touch UI is convenient, the unit requires significant desk space to accommodate four spools. It is best suited for serious makers who frequently switch between material types without waiting days.
Investing in this box extends filament shelf life and reduces waste from failed prints. It offers a robust solution for professional environments needing consistent high quality output.
Advanced Material Support
Unlock drying for advanced filaments like ABS and ASA with an industry first temperature range up to 85C.
Smart Monitoring
Track spool status via an illuminated window without breaking humidity control during pauses or overnight storage.
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3. Creality Space PI SE – Best Budget Value
Creality 2026 New Upgrade Filament Dryer Box Pro
Heats to 65C
Built-in circulation fan
Adjustable 0-24 hours
Knob control interface
The Creality Space PI SE offers exceptional value with rapid heating and easy operation. It delivers high efficiency for users prioritizing quick turnaround times without complex controls.
Pros
- Fast 15 min heat up
- Thermal insulation keeps warm
- Real-time humidity monitor
- Simple knob operation
- Great price point
Cons
- Single spool capacity
- Display screen may be small
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Its 360-degree circulation ensures even heating preventing hot spots that can damage sensitive filament. The built-in fan accelerates moisture removal making prints ready in hours rather than days.
However it holds only one spool which may limit users printing multiple colors simultaneously. The knob interface is straightforward but lacks the customization depth of larger touch screen models.
For individual makers this unit provides reliable protection against moisture issues stringing. It is a top pick for those seeking a budget friendly upgrade to their workflow.
Rapid Heating Cycle
Reach up to 65C within just fifteen minutes thanks to high PTC efficiency and efficient thermal insulation.
Seamless Feeding
Designed for direct feeding while printing ensuring spool remains protected inside the sealed chamber throughout the job.
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4. Creality Space PI Dryer – Best Presets
2026 New Creality Space PI Filament Dryer
3.7-inch touch screen
12 filament presets
48 hours timer
Power-off memory
The Creality Space PI Filament Dryer simplifies workflow with its one-key settings for twelve different materials. A rating of 4.4 indicates satisfaction with its ease of use and consistent results.
Pros
- One-key settings for types
- Memory function after outage
- Uniform hot-air heating
- Supports composite filaments
- Clear temperature display
Cons
- Heating element may warm slowly
- Limited to 1 spool
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The 3.7-inch touch screen offers intuitive control and supports switching between Celsius and Fahrenheit easily. The power-off memory function saves your settings even during unexpected interruptions.
The heater uses a unique 110W PTC element that prioritizes uniformity over raw speed compared to higher watt models. This ensures delicate filaments are dried safely without risk of overheating or degradation.
Ideal for mixed material environments this dryer reduces the cognitive load of manual setup. It is an excellent choice for users who frequently switch between PLA CF and standard PLA.
Uniform Heating Tech
The 110W PTC heater provides uniform drying unlike standard heating pads that often result in uneven moisture removal.
Smart Memory Feature
Restart after power outages without resetting parameters ensuring fast drying resumes immediately after interruption.
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5. SUNLU S1 Plus – Best Entry Level
SUNLU Filament Dryer Box 2026 New Upgrade S1 Plus
Fan-assisted drying
2 inch LCD screen
Max temp 55C
Universal compatibility
The SUNLU S1 Plus offers a reliable entry point for drying standard filaments with an upgraded fan design. A rating of 4.3 reflects its solid performance for basic needs without advanced features.
Pros
- Upgraded fan design
- Clear LCD display
- Adjustable personal settings
- High compatibility with brands
- Responsive customer support
Cons
- Max temp limited to 55C
- Basic knob controls
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Its visual display accurately detects and shows temperature time and humidity making it easy to track progress. The fan speeds up water discharge reducing impact of wet weather on prints.
The temperature range maxes out at 55C which covers common materials but may slow drying for engineering plastics. Knob controls are simple but lack the precision of digital touch interfaces.
For beginners this box solves stringing and clogging issues effectively. It is a practical accessory for anyone ready to protect their filament from humidity.
Fan Enhanced Drying
Upgraded fan design speeds up water discharge from filament reducing environmental impact on print quality.
Visual Monitoring
Accurately detect and display real-time conditions on a clear 2-inch LCD screen for peace of mind.
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6. Polymaker Polydryer – Best Storage Only
Polymaker Polydryer Filament Storage Box
Sealed enclosure design
Hygrometer included
Desiccant compatible
Print without breaking seal
The Polymaker Polydryer is a passive storage solution designed to lock out moisture rather than actively dry. A rating of 4.4 confirms its effectiveness for long-term storage needs between uses.
Pros
- Airtight seal protects
- Built-in humidity monitor
- Desiccant support
- Feeding without opening
- Clean workspace design
Cons
- No active heating element
- Dependent on desiccant
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It combines a sealed enclosure with desiccant support to keep filament in a cleaner drier condition. The hygrometer allows you to track conditions easily without relying on guesswork alone.
Unlike active dryers this box does not have heating elements so it cannot remove existing moisture quickly. You must use desiccants to maintain dryness over extended periods.
Ideal for users who already own an active dryer but need secondary storage this box maintains quality. It helps lower common issues like stringing and bubbling significantly.
Hygrometer Tracking
Monitor storage conditions easily with a built-in hygrometer to judge and maintain suitable environments for filament.
Continuous Feeding
Print while the spool remains stored inside so you can feed without breaking the sealed setup.
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7. SUNLU SP2 – Best Large Spool Support
SUNLU 3KG Filament Dryer SP2 & Storage Box
Holds up to 3kg
250W PTC heater
HD LCD touch screen
Detachable storage base
The SUNLU SP2 is designed for users who need to dry large spools efficiently. A rating of 4.4 highlights its ability to handle 3kg spools and dry quickly for printing.
Pros
- Handles larger spools easily
- Fast heating to 70C
- Detachable base storage
- Silicone holes for flexibility
- Humidity monitor included
Cons
- Bulkier than compact models
- Price higher than budget
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Its 250W PTC heating element heats up in fifteen minutes to 70C ensuring steady temperatures for even drying. The detachable base allows you to lift the storage box away after drying.
The HD LCD screen provides clear visibility of conditions making it simple to track progress. However the unit is larger than compact models which requires more dedicated workspace.
For professional shops printing large parts this unit ensures filament is ready quickly. It is a robust solution for high-volume environments needing quick turnaround.
Fast Heating Cycle
The 250W PTC element heats up to 70C within 15 minutes compared to other dryers ensuring efficiency.
Versatile Storage
Rollers allow different sized spools from 250g up to 3kg ensuring compatibility with all standard formats.
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8. Sovol SH02 – Best Multi-Printer Support
Sovol Filament Dryer SH02 Dry Box
Holds 2 spools
150W PTC heater
9 filament presets
Safety protection system
The Sovol SH02 stands out for its dual filament holes allowing use with two printers simultaneously. A rating of 4.3 indicates satisfaction with its energy-efficient heating and sealing improvements.
Pros
- Two holes for printers
- One-key settings included
- Improved sealing design
- Safety auto shut off
- Energy efficient heater
Cons
- Fan failure alarm only
- Limited to 2 spools
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Its 150W heater reaches 70C in twenty-five minutes and includes one-key settings for nine common material types. This simplifies workflow when switching between different jobs without manual recalibration.
The safety protection cuts off heating if temperature exceeds 130C ensuring safety during operation. The fan alarm prompts replacement if it stops rotating preventing overheating damage.
Ideal for multi-printer studios this box saves space and improves organization. It offers a balanced solution for users needing flexibility and safety features.
Multi-Printer Feeding
Two filament holes allow PTFE pipes through enabling drying for two printers at the same time.
Enhanced Safety
Auto cut off above 130C and alarm for fan stop prevent PTC module from burning out during use.
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9. SUNLU S4 – Best for Multiple Spools
SUNLU S4 3D Printer Filament Dryer Boxer
Holds 4 spools
350W PTC heater
Triple fan system
Auto humidity control
The SUNLU S4 offers massive capacity with four spools and a 350W heater for rapid drying. A rating of 4.7 confirms its ability to deliver professional results for multi-color printing.
Pros
- 50% faster heating
- Triple fan uniform balance
- Smart auto humidity
- Triple security system
- Universal printer connection
Cons
- High wattage requires outlet
- Premium price range
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Its triple fan system maintains temperature balance within three degrees ensuring optimal drying for every section of filament. Auto humidity control starts drying when needed and stops when below 25%.
The safety features include three layers of protection keeping the environment worry-free during long prints. However the high power requirement may need dedicated outlets for best performance.
For users seeking uninterrupted printing this model provides freedom for multi-machine setups. It is a top tier choice for advanced users needing reliability.
Triple Fan Balance
Three built-in fans maintain temperature balance within 3C guaranteeing optimal drying for every filament section.
Smart Humidity
Adjust internal humidity by mode and auto start drying when humidity hits desired range for optimal results.
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10. SUNLU S1 Plus White – Best Quiet Design
SUNLU S1 Plus Filament Dryer
Ultra quiet design
Max temp 55C
Time 1-99 hours
2-inch LCD monitor
The SUNLU S1 Plus White is engineered for quiet operation making it ideal for office environments. A rating of 4.7 highlights its effectiveness in solving wet filament issues without noise.
Pros
- Less than 10db noise
- Two rollers inside
- Adjustable time range
- Bright LCD display
- Solves wet filament
Cons
- Basic feature set
- Smaller display
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It runs at less than 10db ensuring it does not disturb work or life during extended drying cycles. The large screen LCD monitor displays temperature and time clearly and brightly for easy reading.
The rollers allow printing while drying and the time range extends to 99 hours for flexibility. While features are basic they cover essential needs for most standard filaments.
For users prioritizing silence this unit is the best choice for quiet productivity. It ensures model improvement and reduces impact of the objective environment on prints.
Ultra Quiet Operation
Ultra quiet design operating less than 10db ensures no disturbing of your life and work during use.
Print While Drying
Two rollers inside the box allow you to print while drying for convenient workflow integration.
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Buying Guide – How to Choose the Best 3D Printer Filament Dryer Box
Selecting the right dryer involves balancing capacity, heating speed, and temperature range with your specific printing needs.
Capacity and Spool Size
Consider how many spools you typically dry at once. Most units hold one to two spools but some premium models accommodate up to four or larger 3kg sizes. If you print multi-color projects often a larger capacity unit will save time and effort.
Look for models with adjustable rollers to handle various spool weights and diameters. Ensure the interior dimensions match your specific filament spool sizes to avoid fit issues.
Heating Technology and Speed
The heating element type and wattage determine how quickly your filament reaches the target temperature. PTC heaters are generally preferred for their safety and consistent performance compared to standard heating pads.
Higher wattage like 250W or 350W allows for faster heat up times reaching 70C in under twenty minutes. For high throughput environments speed is a crucial factor to minimize downtime.
Temperature Range and Control
Different materials require different drying temperatures ranging from 45C for PLA to 70C for nylon or PC. Ensure the unit can reach the maximum temperature required by your specific filament types.
Precise temperature control allows you to fine tune drying conditions for optimal results. Look for units with digital displays to verify the actual temperature inside the chamber.
Sealing and Moisture Protection
Effective sealing prevents ambient humidity from re-entering the chamber during storage. Silicone seals or gaskets are essential to maintain a dry environment when the unit is powered off.
Check for cable exit ports that maintain the seal when PTFE tubes are inserted. A loose seal will negate the benefits of the dryer by allowing moisture back into the box.
User Interface and Controls
User-friendly interfaces simplify the drying process for different filament types. Touch screens or knobs with preset options can streamline your workflow compared to manual button adjustments.
Display screens should clearly show temperature humidity and countdown timers. Real-time monitoring helps you track progress without opening the box which disrupts the drying environment.
Safety Features
Safety features like auto shut off or thermal switches protect your printer and environment from overheating. Units with fan alarms or power outage memory add reliability to your workflow.
Ensure the unit meets standard safety certifications to avoid electrical risks. Robust build quality ensures longevity and safe operation over time.
Noise Levels
Since some dryers use fans for air circulation noise can be a factor in shared spaces. Look for models specifically advertised as ultra quiet or under 20dB for office friendly use.
Lower noise levels ensure the device does not distract during work. This is especially important if you print in a home office or shared living area.
How to Use and Care for Your 3D Printer Filament Dryer Box
Start by setting the temperature based on your filament type. Common PLA usually requires 45C to 50C while engineering materials like Nylon need up to 70C. Ensure the spool is placed securely inside before powering on.
Connect the PTFE tube from the dryer outlet to your printer extruder to allow feeding while drying. Keep the seal tight around the tube to prevent humid air from entering the chamber during printing.
For storage use the sealing hole plug when the box is not active to maintain dryness. If using desiccants place them inside the sealed box to prolong filament life when not in use.
Frequently Asked Questions
How long does it take to dry filament in a dryer box?
Drying time typically ranges from three to six hours for standard filaments like PLA depending on humidity levels. Advanced materials like Nylon may require up to twelve hours for thorough drying. Check the humidity monitor to verify dryness.
Can I print while the filament is drying in the box?
Yes most modern dryer boxes are designed to feed directly into your printer while active. Simply connect a tube from the box outlet to your extruder to maintain a sealed dry path during printing.
What temperature should I set for PLA filament drying?
Set the dryer between 45C and 50C for PLA. This range is sufficient to remove moisture without degrading the material. Higher temperatures can cause PLA to become brittle or soften improperly.
Do I need to use desiccant in a dryer box?
Active dryer boxes generate heat to remove moisture so desiccants are usually not needed during operation. However for long term storage without power using desiccant packs helps maintain dryness effectively.
How do I know when the filament is fully dry?
Use a hygrometer if available to check internal humidity levels which should be below 20 percent. Additionally visual signs like reduced stringing and smoother extrusion indicate the filament is dry enough for printing.
Is a dryer box worth the investment for hobbyists?
Yes investing in a dryer box significantly improves print quality by preventing moisture related failures. It saves money on wasted filament and reduces frustration from failed prints caused by humidity.
Final Thoughts on Choosing the Best 3D Printer Filament Dryer Box
The Creality Space PI SE offers the best value for beginners while the SUNLU S4 leads in capacity for advanced users. Each model reviewed balances cost and features to suit different printing needs.
Prioritize capacity and heating speed based on how much filament you use weekly. If you print daily multiple spools a larger unit with faster heating will pay off in time savings.
Always check current prices and availability as deals change frequently on online marketplaces. Verify the latest specs before purchase to ensure the model matches your specific requirements.