Polymaker Polydryer Filament Storage Box for 1kg PA Nylon PLA PETG ASA ABS
4.4Editor score
Sealed enclosure with desiccant support
Built-in hygrometer for humidity monitoring
Compatible with multiple filament types
In this guide
A reliable 3D printer filament dryer box is essential for maintaining print quality and preventing moisture related issues like stringing or clogging during your projects.
We compared ten top models based on capacity, heating speed, sealing quality, and user feedback to help you find the best dryer for your specific filament needs.
Each pick highlights key features and trade-offs to guide your decision. Please note that prices and availability may change over time so check current listings before buying.
Top 3 Picks for Best 3D Printer Filament Dryer Box
Creality Filament Dryer Box 4 Spools, Space Pi X4 Filament Storage Box, 200W PTC Heats Up to 85°C, Dual Heating Chambers, Fast Drying & Moisture-Free Storage, for PLA, PETG, TPU, ABS
4.6Editor score
Holds 4 standard 1kg spools
Dual independent 200W heating chambers
Precise temperature control up to 85°C
SUNLU S4 3D Printer Filament Dryer Boxer, Black
4.7Editor score
Holds 4 spools simultaneously
350W PTC heater for fast heating
Auto humidity control with triple fans
Top 10 Best 3D Printer Filament Dryer Box in 2026 Compared
Compare these top filament dryer boxes side by side to find the right model for your spool capacity heating speed and material compatibility needs.
ProductsSpecificationsEditor scorePrice
Editor's Choice
Comgrow 3D Printer Filament Dryer Box
Holds 2 rolls of 1kg spools
Temperature range 40 to 50C
Silicone cable sheath outlet
LCD screen with touch buttons
4.4Editor score
Editor's Choice
Creality Filament Dryer Box 4 Spools
Holds 4 standard 1kg spools
Dual 200W PTC heating chambers
Max temperature 85 degrees Celsius
Illuminated viewing window
4.6Editor score
Best Premium
Creality 2026 New Upgrade Filament Dryer Box Pro
Heats up to 65 degrees Celsius
Built-in fan for air circulation
Adjustable temperature 45 to 65C
Time setting up to 24 hours
4.4Editor score
2026 New Creality Space PI Filament Dryer
360 degree hot air heating
One-key settings for 12 filaments
48 hours timer function
3.7 inch touch screen
4.4Editor score
SUNLU Filament Dryer Box 2026 New Upgrade S1 Plus
Upgraded fan design for drying
2 inch LCD display screen
Adjustable temperature 35 to 55C
Fits most 1.75 to 3mm filaments
4.3Editor score
Polymaker Polydryer Filament Storage Box
Airtight sealed enclosure design
Built-in hygrometer included
Compatible with up to 1kg spools
No printing sealing required
4.4Editor score
SUNLU 3KG Filament Dryer SP2 & Storage Box
Holds up to 3kg spools
250W PTC heating element
Reach 70C in 15 minutes
HD LCD touch screen
4.4Editor score
Sovol Filament Dryer, SH02 Dry Box
Dual spool drying capacity
150W PTC heater
One-key settings for 9 filaments
Safety protection features
4.3Editor score
SUNLU S4 3D Printer Filament Dryer Boxer
Holds 4 spools simultaneously
350W PTC heater
Triple fans for uniform drying
Auto humidity control
4.7Editor score
SUNLU S1 Plus Filament Dryer, White
2 inch LCD monitor
Adjustable temperature 35 to 55C
Time setting 1 to 99 hours
Ultra quiet design less than 10dB
4.7Editor score
1. Comgrow 3D Printer Filament Dryer Box – Best Overall 3D Printer Filament Dryer Box
Comgrow 3D Printer Filament Dryer Box
2 roll capacity
40 to 50C range
Silicone cable sheath
LCD control screen
The Comgrow 3D Printer Filament Dryer Box is a versatile solution with a 4.4 rating. It provides reliable moisture removal for PLA ABS and silk filaments with an LCD display for easy monitoring.
Pros
- Fits two 1kg spools
- Clear LCD display
- Good sealing performance
- Easy touch controls
- Affordable price point
Cons
- Lower max temperature
- Basic preset options
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Its large storage volume holds two standard 1kg spools comfortably while the silicone cable sheath prevents moisture re-entry during printing. The touch buttons allow quick adjustments to temperature and drying time settings.
The maximum temperature is limited to 50C which may not be sufficient for higher temperature materials like PC or PAHT. However the reliable sealing makes it suitable for most common filaments.
This box is ideal for users who print regularly with standard materials and want a budget-friendly option that keeps filaments dry without taking up much space.
Spacious Dual Spool Storage
The inner dimensions allow two 1kg spools to dry simultaneously ensuring you have dry filament ready for multiple prints.
Real-Time Monitoring
A 2-inch LCD screen displays temperature and humidity data so you can track drying progress without opening the box.
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2. Creality Filament Dryer Box 4 Spools – Best 3D Printer Filament Dryer Box for High Volume
Creality Filament Dryer Box 4 Spools
4 spool capacity
Dual 200W chambers
Max 85C temperature
Illuminated window
The Creality Space Pi X4 boasts a 4.6 rating and is built for high-volume users. Its dual heating chambers allow faster moisture removal and it supports advanced materials with temperatures up to 85C.
Pros
- Holds four 1kg spools
- Dual heating chambers
- High max temperature 85C
- Illuminated viewing window
- Precise touch UI
Cons
- Higher price point
- Requires significant space
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With capacity for four 1kg spools this box is perfect for those who run multi-material or multi-color prints. The touch UI is intuitive and the sealed enclosure prevents humidity reabsorption during pauses.
Its larger footprint may not fit compact workspaces and the higher cost can be a barrier for hobbyists. Yet the efficiency and capacity make it valuable for serious makers.
Buy this if you need to dry large batches of filament quickly or work with advanced materials requiring higher drying temperatures.
Dual Chamber Efficiency
Two independent 200W chambers remove moisture faster than single chamber dryers reducing wait time before printing.
Advanced Material Support
Temperature settings reach 85C enabling drying of ABS PC PA and other high-performance filaments effectively.
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3. Polymaker Polydryer – Best Budget 3D Printer Filament Dryer Box
Polymaker Polydryer Filament Storage Box
Sealed enclosure
Hygrometer included
Up to 1kg spools
No printing seal break
The Polymaker Polydryer is a cost-effective solution for storage with a 4.4 rating. It does not have active heating but uses an airtight seal and hygrometer to maintain dry conditions between prints.
Pros
- Affordable price
- Built-in hygrometer
- Good airtight seal
- Compatible with many filaments
- Simple to use
Cons
- No active heating
- Desiccant sold separately
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The built-in hygrometer helps you monitor humidity levels easily so you know when to replace desiccant or dry filament actively. Its design allows feeding without breaking the seal which keeps moisture out.
Since it lacks active heating it relies on desiccants for moisture control which might not be enough for extremely humid environments. This makes it best as a storage box or preprint drying companion.
Consider this if you need a reliable storage solution that is easy to use and fits common spool sizes without advanced electronics.
Humidity Monitoring
The visible hygrometer reading lets you check storage conditions instantly without guessing about moisture levels.
Airtight Protection
Sealed enclosure design combined with desiccant support locks out moisture to keep filaments dry over time.
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4. Creality Space PI SE – Best Value 3D Printer Filament Dryer Box
Creality Space PI SE Filament Dryer Box Pro
Upgraded PTC solution
65C max temp
Fan circulation
24 hour timer
The Creality Space PI SE has a 4.4 rating and features an upgraded PTC solution with a fan for 360 degree air circulation. This ensures even heating which is vital for consistent drying results.
Pros
- Quick heating in 15 mins
- 360 degree air circulation
- Adjustable temp 45 to 65C
- No assembly required
- Thermal insulation
Cons
- Single spool capacity
- No built-in desiccant
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It heats up to 65C within 15 minutes and allows time settings up to 24 hours. The knob and display make it easy to operate without complicated menus. Thermal insulation keeps the box warm safely.
It fits only one 1kg spool which limits capacity compared to multi-spool models. Users must add desiccant separately for long-term storage drying active drying cycles.
This model is great for users who want fast reliable drying for one spool at a time without paying for premium features.
Fast PTC Heating
High efficiency PTC element heats the chamber quickly saving time before you can start printing.
Even Air Circulation
Built-in fan circulates hot air around the spool preventing hot spots and ensuring thorough moisture removal.
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5. Creality Space PI – Best 3D Printer Filament Dryer Box for Advanced Filaments
Creality Space PI Filament Dryer
110W PTC heater
One-key for 12 types
48 hour timer
3.7 inch touch screen
The Creality Space PI Filament Dryer has a 4.4 rating and offers one-key settings for 12 filament types including composites. This simplifies drying for diverse materials without manual tuning.
Pros
- One-key presets for 12 filaments
- 360 degree heating
- 48 hour timer option
- Power-off memory function
- Wide diameter compatibility
Cons
- Single spool limit
- No internal humidity gauge
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The 3.7 inch touch screen allows switching between Celsius and Fahrenheit easily. Power-off memory saves your settings after a blackout which is a convenient feature for long drying cycles.
It does not include an internal humidity gauge so users must rely on time and temperature settings alone. Also the single spool capacity may require multiple cycles for larger batches.
Buy this if you work with a wide variety of filaments including composites and want easy preset controls.
One-Key Filament Settings
Preset temperatures for twelve filament types streamline the drying process and reduce user error.
Power Outage Resilience
Parameter memory retains settings after power loss so drying resumes without resetting everything.
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6. SUNLU S1 Plus – Best 3D Printer Filament Dryer Box with Visual Display
SUNLU S1 Plus Filament Dryer Box
Fan design included
2 inch LCD screen
35 to 55C range
Max 210x89mm spool
The SUNLU S1 Plus has a 4.3 rating and features an upgraded fan design for faster moisture discharge. The LCD screen displays temperature time and humidity for precise monitoring.
Pros
- Upgraded fan design
- Accurate humidity display
- Personalized settings
- High compatibility
- Available customer service
Cons
- Lower max temp 55C
- Basic touch controls
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It supports diameters up to 3mm and works with most major brands. The temperature range is 35 to 55C which covers most common filaments well. Customer service is available for technical support.
The 55C limit may restrict drying of high temperature materials like PC. Users should confirm their filament needs before purchasing this model.
This box is a solid choice for general use with PLA PETG and TPU when you need clear visual feedback.
Visual Monitoring
The 2 inch LCD screen provides accurate temperature and humidity data for informed drying decisions.
Wide Compatibility
Supports filaments from 1.75mm to 3mm ensuring you can use various brands and types.
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7. SUNLU SP2 – Best 3D Printer Filament Dryer Box for Large Spools
SUNLU 3KG Filament Dryer SP2
Up to 3kg spool
250W PTC heater
Reach 70C in 15 min
HD LCD touch screen
The SUNLU SP2 has a 4.4 rating and supports spools up to 3kg with a 250W PTC heater that reaches 70C in 15 minutes. This speed is ideal for urgent printing needs.
Pros
- Fits large 3kg spools
- Quick 15 min heating
- 360 degree heating
- Detachable storage base
- Built-in hygrometer
Cons
- Higher cost
- Bulkier dimensions
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The detachable base allows it to function as a storage box after drying. It includes a hygrometer and desiccant containers for real-time humidity monitoring which improves storage management.
Its size is larger than standard boxes which might affect placement on a desk. The price is higher but the capacity and speed justify it for professionals.
Choose this if you use large spools frequently and want rapid drying with flexible storage options.
Large Spool Support
Rollers and bar holders accommodate 3kg spools reducing refill frequency and downtime.
Rapid Heating
250W PTC heater warms the chamber in minutes saving waiting time before printing begins.
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8. Sovol SH02 – Best 3D Printer Filament Dryer Box for Dual Spool Drying
Sovol SH02 Filament Dryer
Dual spool holes
150W PTC heater
One-key for 9 types
Smart safety protection
The Sovol SH02 has a 4.3 rating and supports two 1kg spools simultaneously with its dual spool holes. It includes one-key settings for nine filament types which simplifies setup.
Pros
- Dual spool holes for 2 rolls
- Reaches 70C in 25 mins
- Strong sealing design
- 9 filament presets
- Overheat safety features
Cons
- Requires external desiccant bags
- Fan noise may vary
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Its sealing design is improved over previous models and it reaches 70C in about 25 minutes. Safety features include automatic cut off at high temperatures and alarm if fan stops.
You need to add desiccant bags separately for enhanced storage drying which is an extra step. Also users should check fan performance before long runs.
This model suits users who need to dry two spools at once and want preset convenience.
Dual Drying Capacity
Two PTFE pipe holes allow simultaneous drying of two spools for efficient workflow.
Smart Safety
Temperature cut off and fan alarm prevent overheating and protect both filament and device.
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9. SUNLU S4 – Best 3D Printer Filament Dryer Box for Auto Humidity Control
SUNLU S4 3D Printer Filament Dryer Boxer
Holds 4 spools
350W PTC heater
Triple fans
Auto humidity control
The SUNLU S4 holds a 4.7 rating and features 350W heating that gets to 50C in 30 minutes. Its triple fan system ensures uniform temperature distribution throughout the box.
Pros
- Handles 4 spools
- 350W PTC heater
- Auto humidity control
- Triple fans for balance
- High safety rating
Cons
- High price
- Large footprint
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Auto humidity control starts drying when humidity rises and stops when it is low to avoid over-drying. This automated feature reduces manual monitoring and saves energy.
Its high cost and size may not suit casual users. However for those who want automated performance and multi-spool support it is a top contender.
Buy this if you want advanced automation and can accommodate a larger unit for high volume printing.
Auto Humidity Control
Adjustable humidity ranges trigger drying automatically keeping filament dry with minimal user input.
Triple Fan System
Three fans maintain even temperature within 3C ensuring all sections dry equally.
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10. SUNLU S1 Plus White – Best 3D Printer Filament Dryer Box for Quiet Operation
SUNLU S1 Plus Filament Dryer
35 to 55C range
1 to 99 hour timer
Ultra quiet less than 10dB
Two rollers inside
The SUNLU S1 Plus White has a 4.7 rating and is praised for its ultra-quiet operation under 10dB. This makes it ideal for quiet workspaces or homes.
Pros
- Ultra quiet under 10dB
- Clear LCD monitor
- Personalized time settings
- Rollers for printing while drying
- Good value
Cons
- Single spool capacity
- Limited max temperature
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It allows time settings from 1 to 99 hours and rollers that let you feed filament while drying. The LCD monitor displays data clearly so adjustments are easy.
It is limited to 55C which is fine for most common filaments but not for high temperature ones. Single spool capacity is also a limitation for bulk drying.
This model is perfect for quiet environments where low noise is a priority and you mostly use standard materials.
Ultra Quiet Design
Operating noise below 10dB ensures minimal disturbance during long printing or drying sessions.
Integrated Rollers
Rollers allow direct feeding while drying so you can start printing without manual rethreading.
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Buying Guide – How to Choose the Best 3D Printer Filament Dryer Box
Selecting the right dryer involves evaluating capacity, heating speed, and material support to match your printing habits.
Spool Capacity
Capacity determines how many spools you can dry at once. Boxes range from single 1kg spools to four or more for multi-material workflows.
Choose capacity based on how many spools you use per project to minimize downtime.
Heating Speed and Max Temperature
Heating speed affects how quickly you can start printing. Models with higher wattage reach target temperatures faster. Max temperature limits which filaments you can dry.
Ensure max temperature matches your filament needs especially if using high-performance materials like PC.
Sealing and Moisture Protection
Sealing quality prevents humidity re-entry during storage. Airtight designs and silicone gaskets help keep filaments dry between prints.
Look for boxes with strong seals to maintain dry conditions without active heating.
Filament Compatibility
Some boxes support a wide range of filament diameters and materials. Check compatibility lists for PLA PETG TPU ABS nylon and composites.
Confirm the box supports your specific filament type to avoid ineffective drying.
Control Interface and Presets
Interfaces vary from touch screens to simple buttons. Presets simplify drying for common filaments reducing manual adjustments.
Choose an interface that fits your comfort level and workflow preferences.
Safety Features
Safety features like overheat protection and alarms prevent fires or damage during unattended drying.
Prioritize models with safety mechanisms if you leave the dryer running overnight.
Noise Level
Fans and heaters can generate noise that disturbs workspaces. Some boxes offer ultra-quiet designs below 10dB.
Consider noise levels if the dryer is near living or working areas.
Price and Value
Prices vary based on features and capacity. Evaluate how essential advanced features are to your use case before spending.
Balance cost with needed features to get the best value for your setup.
How to Use and Care for Your 3D Printer Filament Dryer Box
Place your filament spool inside the box ensuring it sits correctly on the rollers or bar for smooth feeding.
Set the temperature and drying time based on your filament type using the control panel or presets provided.
Close the seals properly and monitor humidity or temperature on the display to ensure the drying cycle completes successfully.
Frequently Asked Questions
How often should I dry my filament?
Dry filament whenever it shows signs of moisture like stringing or popping. For frequent users drying before every print may be ideal. Occasional users can dry after noticing print defects.
Can I use a filament dryer with wet filament?
Yes a filament dryer is specifically designed to remove moisture from wet filaments. Drying restores print quality and prevents clogging or weak layer adhesion.
What is the best temperature for PLA drying?
PLA usually dries best at 45 to 55C. Higher temperatures risk damaging the material. Always check your filament manufacturer recommendations for precise settings.
Do filament dryers consume much electricity?
Most filament dryers use between 110W and 350W depending on size and heating power. They are generally energy efficient especially when used for few hours per print.
Can I leave my filament in the dryer overnight?
Many dryers have timers or auto-stop features. Ensure safety features are enabled if leaving overnight. Avoid exceeding max drying times unless specified.
Do I need desiccant in a filament dryer?
Active dryers remove moisture so desiccant is not always necessary during drying. However for storage boxes with no heating desiccant is essential to maintain dry conditions.
Final Thoughts on Choosing the Best 3D Printer Filament Dryer Box
The Creality Space Pi X4 and SUNLU S4 offer advanced features for high-volume or multi-material users seeking automation and capacity.
For budget-conscious buyers the Polymaker Polydryer and Comgrow models provide reliable drying without advanced electronics at accessible price points.
Check current pricing and availability before purchasing since offers and stock levels can change regularly.