Creality Filament Dryer Box 4 Spools
4.6Editor score
Holds up to 4 spools
Dual heating chambers
Up to 85 degrees C
In this guide
3D printing enthusiasts often face issues like stringing clogging and poor layer adhesion due to moisture absorption. A reliable 3D Printer Filament Dryer Box solves these problems by actively drying and storing your filament spools in a controlled environment.
To create this guide we analyzed the leading models available in the market based on capacity heating technology and user reviews. We focused on units that offer consistent temperature control and effective sealing to ensure your prints remain high quality.
Each pick in this list highlights specific strengths such as multi spool capacity or advanced humidity monitoring. Please note that product availability and pricing may change so always check the latest details before making your purchase decision.
Top 3 Picks for Best 3D Printer Filament Dryer Box
Comgrow 3D Printer Filament Dryer Box
4.4Editor score
Stores two 1kg spools
Real-time temperature monitoring
Silicone cable sheath outlet
SUNLU Filament Dryer Box 2026 New Upgrade S1 Plus
4.3Editor score
Fan assisted fast drying
LCD visual display
Compatible with multiple diameters
Top 10 Best 3D Printer Filament Dryer Box in 2026 Compared
This side by side comparison breaks down the key specifications and features of every top rated filament dryer box to help you choose the right model for your setup.
ProductsSpecificationsEditor scorePrice
Editor's Choice
Comgrow 3D Printer Filament Dryer Box
Capacity 2 x 1kg spools
Temp Range 40 to 50 C
Display 2 inch LCD screen
Outlet Silicone cable sheath
4.4Editor score
Editor's Choice
Creality Filament Dryer Box 4 Spools
Capacity 4 x 1kg spools
Temp Range up to 85 C
Heating Dual 200W chambers
Display Touch UI interface
4.6Editor score
Best Premium
Creality 2026 New Upgrade Filament Dryer Box Pro
Capacity 1kg spools
Temp Range 45 to 65 C
Heating 360 degree fan circ
Display Screen and knob
4.4Editor score
2026 New Creality Space PI Filament Dryer
Capacity multiple spool sizes
Temp Range 45 to 70 C
Heating 110W PTC heater
Display 3.7 inch touch
4.4Editor score
SUNLU Filament Dryer Box 2026 New Upgrade S1 Plus
Capacity 1.75 to 3mm
Temp Range 35 to 55 C
Heating Fan assisted design
Display 2 inch LCD
4.3Editor score
Polymaker Polydryer Filament Storage Box
Capacity 1kg spools
Type Storage with desiccant
Monitoring Built-in hygrometer
Sealing Airtight design
4.4Editor score
SUNLU 3KG Filament Dryer SP2 & Storage Box
Capacity up to 3kg spools
Temp Range up to 70 C
Heating 250W PTC element
Display HD LCD touch
4.4Editor score
Sovol Filament Dryer, SH02 Dry Box
Capacity 2 x 1kg spools
Temp Range 40 to 70 C
Heating 150W PTC heater
Safety Auto cut-off feature
4.3Editor score
SUNLU S4 3D Printer Filament Dryer Boxer
Capacity 4 x 1kg spools
Heating 350W PTC heater
Fans Triple fan system
Control Auto humidity mode
4.7Editor score
SUNLU S1 Plus Filament Dryer
Capacity standard spool sizes
Temp Range 35 to 55 C
Operation Quiet under 10db
Display 2 inch large screen
4.7Editor score
1. Comgrow 3D Printer Filament Dryer Box – Best Overall for Home Users
Comgrow 3D Printer Filament Dryer Box
Dual spool capacity
Simple touch controls
Effective sealing design
The Comgrow 3D Printer Filament Dryer Box is a reliable choice for home users looking to solve moisture issues. With a solid rating it offers a balanced mix of features and usability that fits most standard setups.
Pros
- Large storage volume
- Clear LCD display
- Good sealing performance
Cons
- Limited temp range
- Setup notes needed
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Its large storage volume allows you to keep two rolls of filament dry at once. The real time monitoring of temperature and humidity ensures you know exactly what is happening inside the box during operation.
While the temperature range is limited to 50 degrees C it is sufficient for common materials like PLA and PETG. The automatic shut down feature adds safety but requires attention to the work state display.
If you need a straightforward solution for keeping your filament dry during printing this box is an excellent pick. It effectively prevents common issues like clogging and poor adhesion.
Sealed Environment
The outlet structure uses a silicone cable sheath to maintain a good seal while allowing filament feeding.
Easy Operation
Touch buttons make it easy to set the temperature and duration without a complicated interface.
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2. Creality Filament Dryer Box 4 Spools – Best for High Volume Users
Creality Filament Dryer Box 4 Spools
Holds four 1kg spools
Dual heating chambers
Up to 85 degrees C
For those who print frequently or use multiple spools the Creality Space Pi X4 is a powerhouse. It stands out as a premium option that can handle high volume drying needs with ease.
Pros
- Massive storage capacity
- Fast 30 percent faster drying
- High temperature capability
Cons
- Higher price point
- Requires more space
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The dual heating chambers allow for much faster drying compared to single chamber units. This means you can get your filament ready in hours rather than days which is great for urgent projects.
The higher maximum temperature unlocks advanced filaments like ABS and nylon that need more heat to dry properly. The sealed enclosure ensures that once dried the filament stays dry during pauses.
If you have the space and budget this box is an investment that pays off in print quality. It is ideal for creators who rely on a wide variety of filament types.
Dual Chamber Speed
Two independent 200W heating chambers remove moisture significantly faster than standard dryers.
Illuminated Window
Monitor spools via the window without breaking the humidity control of the sealed box.
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3. SUNLU Filament Dryer Box 2026 New Upgrade S1 Plus – Best Value for Money
SUNLU Filament Dryer Box 2026 New Upgrade S1 Plus
Fan assisted drying
Visual LCD display
Wide filament compatibility
The SUNLU S1 Plus offers an accessible entry point into active filament drying. It is designed to solve wet filament issues without breaking the bank for hobbyists on a budget.
Pros
- Affordable price point
- Fan design speeds drying
- Clear visual display
Cons
- Basic feature set
- Lower max temp
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The upgrade includes a fan design that speeds up the discharge of excess water from filaments. This helps reduce the impact of wet weather on your prints and ensures a smoother surface.
While it lacks some advanced features found in premium units it covers the basics well. The 2 inch LCD screen shows all the necessary info so you can track time and temperature.
This box is perfect for those who want to improve print quality without a large upfront cost. It is simple to use and compatible with most standard 1.75mm and 2.85mm filaments.
Fan Speed
The upgraded fan design helps speed up the drying process for quicker results.
User Friendly
Buttons on the screen make it easy to change settings without a manual.
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4. Creality 2026 New Upgrade Filament Dryer Box Pro – Best for Precision Control
Creality 2026 New Upgrade Filament Dryer Box Pro
Upgraded PTC solution
360 degree heating
Precision humidity monitoring
The Creality Space Pi SE is built for those who want precise control over their drying environment. Its upgraded PTC solution heats up quickly and distributes heat evenly for consistent results.
Pros
- Fast heating time
- Thermal insulation included
- Precision sensor
Cons
- No power memory
- Standard spool size
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A built in fan circulates hot air 360 degrees inside the chamber to heat the entire area. This avoids hot spots and ensures the filament dries evenly throughout the spool.
The inclusion of thermal insulation cotton keeps the unit warm and protects hands from getting burned. The countdown timer on the display allows you to track drying conditions accurately.
If you want to ensure consistent high quality prints this box provides the necessary tools. It is a solid mid range option that balances performance and usability well.
Even Heating
The 360 degree air circulation ensures the entire chamber is heated evenly.
Safety Insulation
Thermal insulation cotton on the walls keeps the box warm and safe to touch.
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5. 2026 New Creality Space PI Filament Dryer – Best Touch Interface
2026 New Creality Space PI Filament Dryer
3.7 inch touch screen
One key 12 presets
48 hour timer
The Creality Space PI Filament Dryer features a modern interface that makes operation simple. With a large touch screen it is easy to navigate settings and track the drying status.
Pros
- Large touch screen
- One key filament presets
- Power off memory
Cons
- Requires power source
- Limited color options
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One of its standout features is the one key set for 12 different filament types. This eliminates guesswork by providing optimized settings for materials like PLA CF and PA CF.
The power off memory function ensures you do not lose your settings after an outage. This saves you the trouble of resetting everything and allows for faster drying sessions.
If you value a modern user experience and need support for diverse materials this model is a strong contender. It brings advanced features to a reasonable price point.
Filament Presets
One key settings support up to 12 filament types for easy selection.
Memory Feature
Previous settings are saved after a power outage to save time.
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6. Polymaker Polydryer Filament Storage Box – Best Passive Solution
Polymaker Polydryer Filament Storage Box
Sealed + desiccant
Built-in hygrometer
Feed without breaking seal
The Polymaker Polydryer is distinct because it focuses on storage rather than active heating. It is ideal for keeping filament dry between prints using an airtight design and desiccant support.
Pros
- Simple passive design
- Real humidity monitoring
- Consistent protection
Cons
- No heating element
- Desiccants not always included
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A built in hygrometer lets you monitor storage conditions easily without relying on guesswork. This helps you maintain a suitable environment for sensitive materials like nylon and PETG.
The design allows you to print without breaking the seal so your filament stays protected during pauses. This makes it a convenient solution for daily use without active power.
If you need a reliable way to store spools between active drying sessions this box is a top pick. It keeps moisture out effectively and supports multiple filament types.
Sealed Protection
Airtight design helps lock out moisture and protect filament between prints.
Hygrometer
Visible humidity reading makes it easier to judge storage conditions.
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7. SUNLU 3KG Filament Dryer SP2 & Storage Box – Best for Large Spools
SUNLU 3KG Filament Dryer SP2 & Storage Box
Holds up to 3kg spools
250W PTC heating
Dual storage base
The SUNLU FilaDryer SP2 is designed for users who utilize larger 3kg spools or multiple standard ones. Its large capacity makes it suitable for extended printing sessions without changing filament.
Pros
- Holds large spools
- Fast heating speed
- Excellent sealing
Cons
- Bulky size
- Higher price
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Equipped with a 250W PTC heating element it reaches steady 70 degrees C in just 15 minutes. This ensures even drying and allows you to get back to printing quickly.
The detachable base allows you to lift the drying box and use the bottom as a sealed storage box. This adds flexibility so you can feed directly into your printer while drying.
If you work with larger spools or need a versatile drying and storage solution this is a great choice. The superior sealing performance keeps moisture out during storage.
Detachable Base
Lift the drying box apart from the base to use as sealed storage.
Large Capacity
Holds spools up to 3kg which is ideal for large volume printing.
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8. Sovol Filament Dryer, SH02 Dry Box – Best for Dual Printing
Sovol Filament Dryer, SH02 Dry Box
Dual spool holes
150W PTC heater
One key 9 presets
The Sovol SH02 is optimized to dry two spools simultaneously which can save time for users with multiple printers. It offers a practical balance of capacity and heating efficiency.
Pros
- Dries two spools at once
- Better sealing than SH01
- Smart safety protection
Cons
- Desiccants not included
- Basic display
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Compared to the SH01 this model features thicker sealing materials and stronger sealing performance. This protects your filaments from moisture even when the unit is not powered on.
Smart safety protection includes auto cut-off if the PTC temperature exceeds safe limits. This prevents burning out the module and gives you peace of mind during operation.
If you need to dry two spools at once for dual printing this unit is a smart choice. It includes presets for common filament types to simplify the process.
Dual Spool
Two holes allow you to dry two 1kg spools at the same time.
Safety Cut-off
Auto cut-off protects the heater if it gets too hot.
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9. SUNLU S4 3D Printer Filament Dryer Boxer – Best Multi-Machine System
SUNLU S4 3D Printer Filament Dryer Boxer
Handles 4 spools
350W PTC heater
Auto humidity control
The SUNLU S4 takes multi spool drying to the next level by handling four 1kg spools simultaneously. This is ideal for those who want to run multiple printers with different colors.
Pros
- Handles 4 spools at once
- Auto humidity mode
- Triple security system
Cons
- Large footprint
- Requires power
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It features a 350W PTC heater that heats up 50 percent faster than other boxes. This efficiency meets speed for a next generation 3D printing experience without long waits.
Smart auto humidity control lets you set the range and the unit manages drying automatically. Triple security includes temperature switches and software protection for worry free operation.
If you run a multi printer setup this box is designed to meet your needs. It keeps all your filament dry and ready for use with minimal intervention.
Multi Spool
Effortlessly handles four 1kg spools for endless printing.
Auto Mode
Auto start drying when humidity hits the desired range.
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10. SUNLU S1 Plus Filament Dryer – Best Quiet Operation
SUNLU S1 Plus Filament Dryer
Ultra quiet under 10db
Customizable time settings
Large LCD screen
The SUNLU S1 Plus White Edition prioritizes quiet performance to ensure it does not disturb your environment. With operation under 10 decibels it is virtually silent during use.
Pros
- Very quiet operation
- Customizable settings
- Clear display
Cons
- Basic features only
- Standard capacity
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You can adjust the drying time from 1 to 99 hours to suit your filament type. This flexibility allows you to dry materials thoroughly before starting a long print.
The 2 inch large screen LCD monitor displays temperature and time clearly and brightly. This makes it easy to check the status without getting close to the box.
If noise is a concern for your workspace this model is a top choice. It provides the necessary drying power without adding unwanted noise to your environment.
Quiet Design
Less than 10db operation means no disturbance to your life and work.
Flexible Timer
Time setting range is 1 to 99 hours to fit your needs.
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Buying Guide – How to Choose the Best 3D Printer Filament Dryer Box
Selecting the right dryer box depends on your filament types printing volume and space constraints.
Heating Technology
Most units use PTC heating elements for safety and efficiency. Look for one that heats evenly to avoid damaging your filament.
Ensure the heater reaches at least 60 degrees C for materials like ABS and nylon.
Spool Capacity
Determine if you need to dry one or multiple spools at a time. Larger boxes support 4 spools but take up more space.
Choose a model that fits your current spool size such as 1kg or 3kg rolls.
Sealing and Moisture Control
A good seal is vital to prevent humidity from re-entering the chamber. Look for silicone gaskets and secure latches.
Check if the unit has a hygrometer or humidity sensor for accurate monitoring.
Ease of Use
Interfaces should be intuitive with clear displays for temperature and time. Touch screens are modern but buttons are reliable.
Presets for common filament types save time by removing the need for manual calculations.
Safety Features
Thermal fuses and auto shut off mechanisms prevent overheating. These are critical for leaving the dryer unattended.
Check for safety certifications to ensure the unit meets electrical standards.
Connectivity and Feed
The outlet design should allow the filament to feed smoothly into your printer. Teflon tubes or silicone sheaths help.
If the box is detachable it can double as a storage box during printing.
Price and Value
Budget models offer basic drying while premium ones add humidity control and speed. Decide on your priority.
Consider the long term value of better print quality versus the initial investment cost.
How to Use and Care for Your 3D Printer Filament Dryer Box
To begin place your filament spool inside the box and thread the end through the designated outlet hole into your printer. Ensure the filament is seated on the rollers to prevent tangles.
Set the temperature and time based on your material type. PLA usually needs lower heat while ABS or Nylon requires higher temps. Monitor the display to ensure the unit stays on.
After drying keep the box sealed when not in use to maintain dryness. Clean the internal fans and sensors periodically to ensure consistent performance.
Frequently Asked Questions
Do I need to dry PLA filament before printing?
PLA is less hygroscopic than other materials but can still absorb moisture over time. If it starts making popping noises or prints poorly drying it can help restore quality.
How long does it take for a filament dryer to work?
Most dryers take between 2 to 6 hours to fully dry a spool. Some premium units with high wattage can speed this up to just a few hours.
Can I leave my filament in the dryer box permanently?
Yes many dryer boxes are designed to be used as storage too. However ensure the unit is turned off when not actively drying to save energy.
Is it safe to leave a filament dryer on overnight?
Most models have auto shut off and safety features that make overnight use safe. Always check the manual for specific guidelines on unattended operation.
What is the difference between active and passive dryers?
Active dryers use heat to remove moisture quickly while passive ones use airtight seals and desiccants. Active is faster but passive is often cheaper.
How do I clean my filament dryer box?
Unplug the unit and wipe the interior with a dry cloth. Avoid using liquids inside the box to prevent damage to electrical components.
Final Thoughts on Choosing the Best 3D Printer Filament Dryer Box
We have reviewed the top 10 models from Comgrow to SUNLU and Creality. Each offers unique features suited for different printing needs.
Prioritize capacity if you print often and safety if you leave the device unattended. Look for clear controls that make operation simple.
Remember that prices and availability may change so check the current listings on Amazon before buying.