Creality Filament Dryer Box 4 Spools
4.6Editor score
Dual independent 200W heating chambers
Stores up to 4 standard spools
85°C max temperature for advanced filaments
In this guide
Moisture absorption is one of the most common issues affecting 3D printing quality. A reliable 3D Printer Filament Dryer Box ensures your materials stay dry, preventing stringing, clogging, and weak layer adhesion during prints.
We evaluated ten leading models based on heating efficiency, capacity, sealing quality, and ease of use. Our comparison includes data from verified user ratings and technical specifications to help you find the right fit for your workflow.
Each pick below highlights key features, pros, and cons to guide your decision. Note that prices and availability can change frequently, so checking the current listing is recommended before purchase.
Top 3 Picks for Best 3D Printer Filament Dryer Box
SUNLU S4 3D Printer Filament Dryer Boxer
4.7Editor score
Holds four 1kg spools simultaneously
350W PTC heater for fast heating
Triple fan system for uniform drying
SUNLU S1 Plus Filament Dryer
4.7Editor score
Affordable entry-level drying solution
Ultra-quiet operation under 10dB
Supports 1.75mm to 3mm filament
Top 10 Best 3D Printer Filament Dryer Box in 2026 Compared
The following table provides a side-by-side comparison of all ten selected models. Review the core specifications to identify which box aligns with your filament types, capacity needs, and budget constraints.
ProductsSpecificationsEditor scorePrice
Best Budget
Comgrow 3D Printer Filament Dryer Box
Capacity: 2 rolls of 1kg
Temperature Range: 40°C to 50°C
Screen: 2-inch LCD with touch
4.4Editor score
Editor's Choice
Creality Filament Dryer Box 4 Spools
Capacity: 4 rolls of 1kg
Heating: Dual 200W PTC chambers
Max Temp: 85°C for tough materials
4.6Editor score
Best Premium
Creality Space Pi SE Filament Dryer
Capacity: 1KG spools
Heating: PTC with fan circulation
Temp: 45°C to 65°C
4.4Editor score
Creality Space PI Filament Dryer
Heating: 110W PTC 360°
Screen: 3.7-inch touch display
Timer: 0 to 48 hours
4.4Editor score
SUNLU S1 Plus Filament Dryer
Capacity: 210*89mm spool
Temp: 35°C to 55°C
Screen: 2-inch LCD
4.3Editor score
Polymaker Polydryer Filament Storage Box
Feature: Sealed with desiccant
Monitoring: Built-in hygrometer
Capacity: Up to 1kg spool
4.4Editor score
SUNLU 3KG Filament Dryer SP2
Capacity: Supports 3kg spools
Heating: 250W PTC 360°
Temp: Up to 70°C
4.4Editor score
Sovol SH02 Dry Box
Capacity: 2 rolls of 1kg
Heating: 150W PTC fast heater
Preset: One key for 9 types
4.3Editor score
SUNLU S4 3D Printer Filament Dryer
Capacity: 4 spools of 1kg
Heating: 350W PTC heater
Feature: Auto humidity control
4.7Editor score
SUNLU S1 Plus Filament Dryer
Capacity: 210*85mm spool
Temp: 35°C to 55°C
Sound: Less than 10dB
4.7Editor score
1. SUNLU S4 – Best 3D Printer Filament Dryer Box
SUNLU S4 3D Printer Filament Dryer Boxer
4 Spools Capacity
350W PTC Heating
Triple Fan Drying
Auto Humidity Control
The SUNLU S4 stands out as a top-tier option for users who need high capacity. It holds four 1kg spools simultaneously, making it perfect for multi-color or multi-machine setups. With a 4.7 rating from users, it delivers reliability and performance.
Pros
- Holds four 1kg spools easily
- Fast 350W heating system
- Triple fans ensure even temperature
- Smart humidity auto-control mode
- Compatible with most printers
Cons
- Higher price point than others
- Large physical footprint required
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Its standout feature is the 350W PTC heater combined with three built-in fans. This setup heats up quickly and maintains a temperature balance within ±3°C, ensuring uniform drying across all spools. The auto humidity control mode further reduces manual intervention.
While the S4 is robust, it comes at a higher cost and requires significant desk space. The large footprint might not suit smaller studios. However, for serious users needing efficiency, these trade-offs are acceptable given the output quality.
Buy this if you print frequently with multiple filaments or need to store several types at once. It is an investment in workflow continuity that minimizes downtime caused by wet filament issues.
High Capacity for Multi-Color Printing
Supports four 1kg spools for complex jobs requiring frequent color changes without interruption.
Advanced Humidity Management
Smart auto mode detects humidity levels and starts or stops drying to prevent excessive moisture or drying.
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2. Creality Space Pi X4 – Best Premium Filament Dryer Box
Creality Filament Dryer Box 4 Spools
4 Spools Capacity
Dual 200W Chambers
Max Temp 85°C
Sealed Enclosure
The Creality Space Pi X4 offers premium features for high-volume users. It accommodates four 1kg spools or two 2kg spools. With a 4.6 rating, it shows strong user satisfaction regarding drying speed and moisture elimination.
Pros
- Holds 4 standard or 2 large spools
- Dual chambers dry faster
- Heats to 85°C for ABS/PC
- Silicone-sealed design prevents reabsorption
- Illuminated window for monitoring
Cons
- Complex interface for beginners
- Higher cost than entry models
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Dual independent 200W heating chambers allow for faster drying—30% faster than single-chamber dryers. The ability to reach 85°C makes it suitable for advanced filaments like ABS and PC that require higher temperatures to release moisture effectively.
The price reflects its advanced capabilities, which may be overkill for casual users. Additionally, the touch UI has a learning curve. Despite this, the efficiency and high-temperature support justify the cost for professionals.
Choose this if you work with high-performance materials or print large batches. The dual chambers and sealed design ensure consistent results across various filament types and environmental conditions.
Dual Chamber Efficiency
Two independent heating zones work together to reduce drying time significantly compared to single-zone units.
Advanced Material Support
Up to 85°C capability handles difficult materials like Polycarbonate and ABS without damage or loss of properties.
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3. SUNLU S1 Plus – Best Budget Filament Dryer Box
SUNLU S1 Plus Filament Dryer
Affordable Price Point
Ultra-Quiet 10dB
1.75mm to 3mm Support
6-99 Hours Timer
For those on a tight budget, the SUNLU S1 Plus offers excellent value. It maintains a 4.7 rating by delivering reliable drying performance for common materials. It solves stringing and clogging issues effectively without breaking the bank.
Pros
- Very affordable price
- Ultra-quiet operation under 10dB
- Easy-to-use LCD screen
- Fits 1.75mm to 3mm spools
- Clear temperature and time display
Cons
- Lower max temperature limit
- Single chamber design
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Its ultra-quiet design keeps noise under 10dB, making it suitable for home offices or shared spaces. The adjustable temperature and time settings allow customization for various filament needs within its range.
While it lacks the high heat and capacity of premium models, it handles standard PLA, PETG, and TPU well. The limited temperature range might not suit all engineering materials, but for general use, it is sufficient.
Opt for this if you are new to 3D printing or want a simple, low-cost solution. It provides the essential features needed to improve print quality without unnecessary complexity.
Quiet Home Operation
Minimal noise levels ensure the drying process does not disturb daily activities or sleep cycles.
Wide Filament Compatibility
Accommodates spools from 1.75mm up to 3mm, covering most standard options found on the market.
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4. Comgrow Dryer – Reliable Filament Storage Box
Comgrow 3D Printer Filament Dryer Box
2 Rolls 1kg Capacity
Silicone Cable Sheath
Adjustable Temp Range
Good Seal Performance
The Comgrow dryer box is designed to keep filaments dry during printing. It holds two 1kg spools and features a clear LCD for monitoring. With a 4.4 rating, users appreciate its consistent performance and sealing capabilities.
Pros
- Holds 2 standard 1kg spools
- Includes Teflon tube and sheath
- Sealing design keeps moisture out
- Clear LCD monitoring
- 24-hour after-sales support
Cons
- Auto shut-down if not set
- Manual setting required
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Its outlet structure includes a silicone cable sheath and Teflon tube for smooth feeding. The snap button cover ensures good sealing performance to prevent moisture ingress when not actively drying. This makes it a solid choice for storage.
Note that the unit auto-shuts down if not set properly within three minutes, which requires attention during setup. The manual settings are straightforward but lack presets found in newer models.
This model is ideal for users needing a balance between storage and active drying. It ensures consistent feeds and protects consumables effectively within a reasonable size.
Effective Sealing System
Snap button cover and silicone seals prevent moisture from entering the storage area between printing sessions.
Smooth Filament Feeding
Teflon tubes and cable sheaths reduce friction for a smoother path from the box to the printer.
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5. Creality Space Pi SE – Efficient Filament Dryer Box
Creality Space Pi SE Filament Dryer
Upgraded PTC Solution
65°C Max Temp
Knob Control Interface
Countdown Timer Display
The Creality Space Pi SE offers upgraded PTC efficiency with a built-in fan for 360° circulation. It heats quickly to 65°C, making it suitable for most common filaments. With a 4.4 rating, it provides reliable performance for its price range.
Pros
- Fast heating to 65°C in 15 mins
- Even 360° air circulation
- Easy knob operation
- Thermal insulation on walls
- Supports various filament types
Cons
- Basic display interface
- No smart humidity sensors
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Thermal insulation cotton on inner walls keeps heat in and protects against heat. The knob interface allows easy operation without needing complex menus. This simplicity is appreciated by users who value straightforward controls.
While it lacks advanced humidity monitoring, it is effective at reducing moisture issues like stringing. The limited max temperature may not suit high-temperature materials like Polycarbonate which need more heat.
Choose this if you want quick, efficient drying without high complexity. It balances cost and performance well for general-purpose 3D printing needs.
Rapid Heating Cycle
Heats the chamber to 65°C in just 15 minutes, getting filament ready for printing faster.
User-Friendly Controls
Simple knob design allows quick adjustments to time and temperature without confusing digital menus.
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6. Creality Space PI – Versatile Filament Dryer Box
Creality Space PI Filament Dryer
110W PTC Heater
3.7-inch Touch Screen
Power-off Memory Function
0-48 Hour Timer
The Creality Space PI stands out with a 3.7-inch touch screen and presets for 12 filament types. With a 4.4 rating, users find it versatile for various materials including high-performance composites. It simplifies the drying process significantly.
Pros
- Large 3.7-inch touch screen
- 12 filament presets included
- Memory saves settings after power outage
- Long timer up to 48 hours
- Celsius and Fahrenheit switching
Cons
- 110W heating might be slow for large loads
- Requires outlet access
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A power-off memory function saves settings after outages, which is a unique practical feature. The timer can go up to 48 hours, allowing thorough drying for moisture-sensitive filaments. Temperature switching between Celsius and Fahrenheit adds flexibility.
The 110W heater is durable but may be slower than higher-wattage models for thick filaments. Overall, it remains a strong choice for its usability and long-duration drying capabilities.
Select this if you need a user-friendly interface and long drying times. It balances technology with practical features for consistent results.
Extensive Filament Presets
Includes pre-set settings for 12 types, including composite filaments for ease of use.
Persistent Configuration Memory
Remembers settings even after a power loss, reducing the need to reset every time.
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7. SUNLU S1 Plus – Efficient Filament Dryer Box
SUNLU S1 Plus Filament Dryer
Fast Drying with Fan
2-inch LCD Display
35°C to 55°C Range
Supports 1.75mm to 3mm
The black version of the SUNLU S1 Plus features a fan design to speed up moisture discharge. It displays temperature, time, and humidity on a 2-inch screen. With a 4.3 rating, it shows solid performance for reducing wet weather impacts.
Pros
- Fan speeds up moisture discharge
- Accurate temp, time, humidity display
- Adjustable settings for environment
- Fits various standard spool sizes
- Good customer service support
Cons
- Fan noise slightly higher than premium
- Basic plastic construction
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The fan design helps push excess water out faster than passive dryers. Adjustable settings allow fine-tuning based on ambient conditions. This adaptability ensures better print quality across different environments.
While the plastic build is standard, it does the job well. The fan adds slight noise but keeps drying times short. For most users, this balance works effectively.
Consider this if you live in humid areas where fast moisture removal is essential. It offers reliable drying with minimal setup.
Active Fan Moisture Removal
Upgraded fan design helps push out excess moisture from filaments quickly.
Adaptive Environmental Settings
Adjust temperature and time based on your local humidity and filament needs.
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8. Polymaker Polydryer – Best Filament Storage Box
Polymaker Polydryer Filament Storage Box
Sealed with Desiccant Support
Built-in Hygrometer
Feeding without Breaking Seal
Long-Term Storage Focus
The Polymaker Polydryer focuses on storage and humidity control. It combines an airtight seal with desiccant support to lock out moisture. With a 4.4 rating, it is praised for consistency in maintaining filament quality.
Pros
- Combines sealed enclosure with desiccant
- Visible humidity reading
- Print without breaking seal
- Supports multiple filament types
- Simple and practical design
Cons
- No active heating mechanism
- Requires manual desiccant refills
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A built-in hygrometer provides visible humidity readings for precise monitoring. You can feed filament while the spool remains stored inside, breaking the seal only when needed. This preserves dryness for longer periods.
It lacks active heating, so it relies on ambient conditions and desiccants. This makes it less ideal for already wet filaments but excellent for maintenance. It serves better as a protector than a quick dryer.
Choose this for long-term storage rather than urgent drying. It keeps spools dry between prints with minimal intervention.
Moisture Monitoring
Hygrometer lets you track humidity levels easily to ensure the environment stays dry.
Seal Integrity During Feeding
Design allows printing without breaking the seal, protecting filament from air exposure.
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9. SUNLU SP2 – High Capacity Filament Dryer Box
SUNLU 3KG Filament Dryer SP2
Supports up to 3kg spools
250W PTC 360° Heating
Detachable Storage Box
Desiccant Containers Included
The SUNLU SP2 handles larger loads with ease, supporting 3kg spools. It uses a 250W PTC heater to reach 70°C within 15 minutes. With a 4.4 rating, it offers efficient drying and reliable sealing for various materials.
Pros
- Accommodates large 3kg spools
- Heats to 70°C quickly
- Detachable for separate storage
- Silicone holes provide flexibility
- Desiccant containers for monitoring
Cons
- Larger size than average
- Heavier than plastic boxes
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A detachable storage box allows you to lift the dryer apart and use the base for storage. This versatility means you can store spools separately once dry. The included desiccant containers help track internal humidity.
It is a solid option for larger projects needing more filament per spool. The size and weight may be considerations for smaller workspaces.
Select this if you use 3kg spools or need extended drying. It supports high-volume workflows effectively.
Spool Size Versatility
Rollers and bar supports fit spools from 250g up to 3kg.
Dual Functionality
Detachable design allows separate storage and drying modes for added flexibility.
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10. Sovol SH02 – Compact Filament Dryer Box
Sovol SH02 Dry Box
150W PTC Fast Heater
2 Filament Holes
9 Filament Presets
Safety Temperature Cut-off
The Sovol SH02 offers fast 150W PTC heating to 70°C in 25 minutes. It features one-key presets for nine filament types including PC and PA. With a 4.3 rating, it provides a good balance of speed and usability.
Pros
- Fast heating to 70°C
- One-key presets for 9 types
- Improved sealing over previous models
- Smart safety alarms for fans
- PTC cuts off above 130°C
Cons
- Basic display interface
- Requires 2 PTFE tubes
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Safety features include auto power-off if the PTC exceeds 130°C and alarms if the fan stops. The improved sealing design protects from dirt even when unpowered. These add peace of mind during operation.
It is compact but supports dual spools which increases utility. The basic interface is easy to learn but lacks advanced options found in premium models.
Choose this for reliable, fast drying at a reasonable price. It is safe and effective for general printing needs.
Comprehensive Safety Features
Thermal cut-off and fan alarms protect against overheating and component failure.
Simplified Setup
One key sets default time and temperature for common materials.
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Buying Guide – How to Choose the Best 3D Printer Filament Dryer Box
Choosing the right dryer box involves considering capacity, heating power, and safety features. Use these factors to match the device to your specific printing habits.
Capacity and Spool Size
Consider how many spools you need to dry at once. Some boxes hold two 1kg spools while others can accommodate four or even larger 3kg spools. This affects your workflow efficiency and workspace usage.
Select a capacity that matches your typical batch size.
Heating Power and Temperature Range
Higher wattage leads to faster heating. Ensure the max temperature meets your material needs; PLA needs lower heat while ABS requires higher temperatures. Check the temperature range before purchasing.
Choose a unit with enough power to heat your materials efficiently.
Sealing and Moisture Protection
A good seal prevents moisture from re-entering the box. Look for silicone seals and snap button covers. This feature is crucial for storage between printing sessions.
Prioritize models with verified tight seals.
Fan Circulation and Even Heating
Built-in fans help circulate hot air uniformly. This ensures all filaments dry evenly without cold spots. Dual fans or 360° heating designs are preferred for consistency.
Look for systems that promote uniform air movement.
User Interface and Controls
Touch screens and presets make operation easier. Models with one-key settings reduce manual input errors. Ensure the interface is intuitive for your experience level.
Choose a control method that fits your workflow.
Safety Features
Safety mechanisms like thermal cut-offs and fan alarms protect your equipment. These prevent overheating or module damage. Check for certifications and safety specs.
Ensure the unit includes essential safety protections.
Portability and Desk Space
Consider the physical footprint. Larger units may take significant desk space. If space is tight, look for compact options or detachable storage designs.
Pick a size that fits your available workspace.
Price and Value
Prices vary from budget to premium. Determine which features you need and avoid overpaying for unused capabilities. Balance cost against long-term print quality improvements.
Opt for value by matching features to your needs.
How to Use and Care for Your 3D Printer Filament Dryer Box
Place your spool inside the box ensuring the filament is fed through the outlet hole correctly. Close the lid securely to engage the seal. If the model has rollers ensure the spool sits properly for smooth feeding.
Set the temperature based on your filament type. Start with 45°C for PLA and increase up to 70°C for ABS if needed. Set the duration from 4 to 12 hours depending on moisture levels. Wait for the unit to cycle and confirm the drying complete indicator.
Clean the interior periodically to remove any dust or filament dust. Check the filter if your model has one and replace desiccants when needed. Ensure the seal remains intact by wiping the rubber gaskets occasionally for consistent moisture protection.
Frequently Asked Questions
How do I know if my filament is wet?
Look for popping sounds during extrusion or bubbles in printed parts. Stringing and poor layer adhesion often indicate moisture. If you notice these issues your filament likely absorbed humidity and needs drying.
What temperature should I use for PLA drying?
PLA typically dries well at 45°C to 55°C. Temperatures above this can deform the spool or damage the material. Always stay within the manufacturer's recommended limits to avoid warping.
Can I use the dryer while printing?
Most models are designed to feed filament directly while running. Check the feed tube connections and ensure the box is stable. This setup maintains dry filament throughout the print without pauses.
How long does drying take?
Most dryers need 4 to 12 hours to fully dry spools. Time depends on initial moisture and material type. ABS or Nylon may need longer cycles for complete moisture removal.
Can I store filament long term in these boxes?
Many models include seals and desiccant supports for storage. If designed for it the box can store spools for weeks. Check the seal quality before assuming long-term protection.
Does the dryer work with 2.85mm filament?
Most units support 1.75mm and 2.85mm diameters. The outlet holes are adjustable or sized for both. Confirm the compatibility in the specs before buying.
Why does my dryer make noise?
Built-in fans create airflow but can generate hum. Higher wattage units may be louder. Check for obstructions or loose parts that add vibration noise.
What if the dryer stops mid-dry?
Power issues or safety alarms may cause stops. Check the power supply and reset settings if needed. Verify safety features like overheat protection haven't triggered unexpectedly.
Final Thoughts on Choosing the Best 3D Printer Filament Dryer Box
We highlighted ten models that balance capacity power and usability. The SUNLU S4 stands out for large needs while the SUNLU S1 Plus offers budget-friendly value for beginners.
Prioritize features like fan circulation sealing and preset options to match your printing habits. A good dryer box prevents moisture issues and extends your filament life significantly.
Prices and availability can change so check current listings before purchasing. Invest in quality to ensure consistent high-quality prints and better printer longevity.