SUNLU Filament Dryer S2
4.3Editor score
2 kg Spool Capacity
Adjustable Temp 35-70C
Touch Screen Control
In this guide
Moisture is the silent killer of 3D printing quality. Even the best printers struggle with damp filament. A dedicated filament dryer solves this by removing humidity before and during prints.
We evaluated ten leading dryers based on heating speed, capacity, and sealing quality. Our analysis covers everything from budget boxes to premium multi-spool systems for professionals.
Each pick highlights key strengths and ideal use cases for different makers. Prices and availability change frequently so check current listings before purchasing your next dryer unit.
Top 3 Picks for Best Filament Dryer for 3D Printing
Creality Filament Dryer Box 4 Spools
4.6Editor score
4 Spool Storage
Dual Heating Chambers
Max Temp 85°C
SUNLU S4 3D Printer Filament Dryer
4.5Editor score
350W PTC Heater
3 Circulation Fans
8 Exit Holes
Top 10 Best Filament Dryer for 3D Printing in 2026 Compared
This side-by-side comparison highlights the key specifications and features of each top-rated filament dryer to help you find the perfect match for your 3D printing workflow and budget.
ProductsSpecificationsEditor scorePrice
Best Budget
Comgrow 3D Printer Filament Dryer Box
2 Spool Capacity
Temp 40-50°C
LCD Screen Display
Sealed Outlet Port
4.4Editor score
Editor's Choice
SUNLU Filament Dryer Box 2026 New Upgrade S1 Plus
Fan Assisted Drying
Temp 35-55°C
Visual Display Screen
High Compatibility
4.3Editor score
Editor's Choice
Creality Filament Dryer Box 4 Spools
4 Spool Capacity
Dual Chambers 200W
Temp Up To 85C
Illuminated Window
4.6Editor score
SUNLU S4 3D Printer Filament Dryer
4 Spool Capacity
350W PTC Heater
3 Circulation Fans
8 Exit Holes
4.5Editor score
2026 New Creality Space PI Filament Dryer Plus
2 Spool Capacity
360 Hot Air
Temp 45-70°C
Real-Time Monitor
4.4Editor score
Polymaker Filament Dryer & Storage Box Polydryer
Dry Store Print
Built In Hygrometer
Sealed Protection
Wide Compatibility
4.3Editor score
Creality 2026 New Upgrade Filament Dryer Box Pro
1 Spool Capacity
PTC Efficiency
Temp 45-65°C
Knob Operation
4.3Editor score
SUNLU S4 3D Printer Filament Dryer 4 Spools
4 Spool Capacity
350W PTC Heater
3 Circulation Fans
8 Exit Holes
4.6Editor score
SUNLU 3KG Filament Dryer SP2 & Storage Box
3KG Spool Support
250W Heater
15 Min Heat Up
Detachable Base
4.4Editor score
SUNLU Filament Dryer S2
2 Spool Capacity
Fast Heating
Touch Screen
Translucent Lid
4.3Editor score
1. Comgrow Dryer Box – Solid Entry Level Solution
Comgrow 3D Printer Filament Dryer Box
2 Spool Storage
Temp 40-50C
LCD Touch Screen
Silicone Outlet
The Comgrow 3D Printer Filament Dryer Box offers a reliable entry point for users needing moisture control. It holds two standard 1kg spools and features a clear LCD for monitoring temperature and humidity during operation.
Pros
- Affordable price point
- Large storage volume
- Real-time monitoring
- Sealed design
Cons
- Lower max temperature
- Limited spool count
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Its 40 to 50 degree Celsius range suits PLA and PETG well. The silicone sheath outlet ensures smooth feeding without snagging. This unit focuses on keeping filaments dry during printing pauses or active sessions effectively.
While it lacks high heat for nylon, the seal quality is impressive. Users report consistent results for common materials. It is a practical choice for beginners wanting to avoid humidity issues without overspending.
Choose this if you print mostly PLA or PETG. It provides essential drying functions in a compact box. Perfect for hobbyists upgrading from open storage to enclosed drying environments immediately.
Compact Dual Spool Storage
Accommodates two 1kg rolls efficiently for home bench use.
Simple Touch Controls
Intuitive interface allows quick adjustments of time and heat.
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2. SUNLU S1 Plus – Fast Drying Design
SUNLU Filament Dryer Box 2026 New Upgrade S1 Plus
Fan Design
Temp 35-55C
Visual Display
High Compatibility
The SUNLU S1 Plus brings an upgraded fan design to accelerate moisture removal. This addition helps manage wet filament faster than passive units. The 2 inch LCD screen keeps you informed of internal conditions clearly.
Pros
- Fan speeds up drying
- Visual display clarity
- Wide temp range
- Easy customization
Cons
- Average build quality
- Basic sealing
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With a range of 35 to 55 degrees, it handles most standard filaments well. You can adjust settings based on your environment. It is a versatile tool for improving print surface quality and adhesion.
The design prioritizes speed over heavy insulation. Some users note the seal could be tighter for long-term storage. However for active drying runs it performs reliably enough to eliminate common stringing issues.
Ideal for users upgrading from a basic box. The fan feature adds value for quick drying needs. It balances cost and performance well for general 3D printing tasks at home.
Fan Assisted Airflow
Enhances discharge of excess water from filaments during operation.
Clear LCD Readout
Displays temperature time and humidity for better monitoring control.
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3. Creality Space Pi X4 – Best For Multi-Spool Users
Creality Filament Dryer Box 4 Spools
4 Spool Capacity
Dual Chambers 200W
Temp Up To 85C
Touch UI
The Creality Space Pi X4 stands out for its ability to dry up to four 1kg spools. Dual independent heating chambers allow faster removal of moisture compared to single chamber models. It reaches 85 degrees for advanced materials like ABS.
Pros
- Holds four spools
- High heat capability
- Dual heating chambers
- Illuminated window
Cons
- Larger footprint
- Higher price point
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Its touch UI offers precise control over drying scenes. You can monitor spools through an illuminated window without breaking humidity control. This feature is great for pausing prints to manage filament storage efficiently.
The build quality supports high volume printing workflows well. While it takes up more space, the capacity pays off for busy makers. It effectively eliminates bubbling and ensures consistent print quality over time.
This model suits power users needing reliable bulk storage. The high heat unlocks performance for engineering plastics. Consider it if you run multiple projects simultaneously and need consistent drying results always.
High Volume Storage
Holds 4 standard spools or 2 large 2kg spools easily.
Advanced Heat Capability
Unlocks advanced filaments with up to 85 degrees max temp.
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4. SUNLU S4 – Premium Professional Multi-Printer Support
SUNLU S4 3D Printer Filament Dryer
4 Spool Capacity
350W PTC Heater
3 Circulation Fans
8 Exit Holes
The SUNLU S4 is a powerhouse designed for serious printing environments. With eight exit holes, it can feed multiple printers at once. The 350W heater ensures rapid and efficient drying cycles compared to standard units.
Pros
- Supports multiple printers
- High power heating
- Uniform circulation
- DIY modification
Cons
- Heavy weight
- Large dimensions
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Three fans circulate air to maintain consistent temperature everywhere. This prevents hot spots that could warp filament. The size is substantial but necessary for handling four 1kg spools comfortably without crowding.
Flexibility is a key trait here. You can even modify it to hold 3kg rolls or use it as a shoe dryer. It offers longevity and robustness for those needing a long-term solution for all materials.
Choose this if you run a farm of printers. The capacity and power make it worth the investment. It guarantees smooth feeding and high-quality results across all connected machines efficiently.
Multi-Printer Feeding
Eight exit holes allow connecting multiple printers simultaneously.
Uniform Airflow
Three fans ensure even drying across the entire internal space.
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5. Creality Space PI Plus – Modern Touch Interface
2026 New Creality Space PI Filament Dryer Plus
2 Spool Capacity
360 Hot Air
Temp 45-70C
12 Presets
The Creality Space PI Plus features a 3.7-inch touch screen for easy operation. It uses 360-degree hot-air circulation to ensure uniform drying of two spools at once. This prevents uneven drying that plagues simpler models.
Pros
- Touch screen UI
- Real-time humidity
- 12 presets
- Fast heating
Cons
- Two spool limit
- Average sealing
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With 12 filament presets, setup is quick for common types. You can also adjust temps from 45 to 70 degrees manually. The humidity monitor helps you track conditions accurately without opening the box.
It strikes a balance between modern features and utility. While not the largest unit, it covers most standard home needs. It is particularly useful for users who prefer touch interfaces over physical knobs.
Pick this for convenience and clear monitoring. The presets save time for frequent users. It provides reliable performance for PLA PETG and other common materials effectively.
360 Degree Heating
Built-in fan circulates hot air for uniform temperature.
Humidity Monitor
Real-time display helps you track interior moisture levels.
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6. Polymaker Polydryer – All-in-One Protection
Polymaker Filament Dryer & Storage Box Polydryer
Dry Store Print
Hygrometer
Sealed Storage
Desiccant Support
The Polymaker Polydryer focuses on keeping filament dry from print to print. Its design allows feeding directly without breaking the seal. This reduces moisture re-absorption significantly between sessions.
Pros
- Seal remains intact
- Includes hygrometer
- Multi-material support
- Integrated approach
Cons
- Smaller capacity
- Requires desiccant
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A built-in hygrometer helps you track internal conditions easily. It combines heating, sealing, and desiccant support for complete defense. This is crucial for hygroscopic materials like Nylon that absorb water quickly.
It is a smart choice for precision prints. The consistent drying performance reduces stringing and bubbling. While it might not handle massive volumes, its quality protection is excellent for small batches.
Choose this if you value material integrity. It offers a comprehensive moisture control routine. Perfect for users working with sensitive engineering materials regularly.
Seal Integrity
Maintains dry conditions without exposing filament to air.
Built-in Monitoring
Hygrometer helps judge filament status with less guesswork.
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7. Creality Space PI SE – Efficient Heating
Creality 2026 New Upgrade Filament Dryer Box Pro
1 Spool Capacity
PTC Efficiency
Temp 45-65C
Knob Control
The Creality Space PI SE heats up quickly to 65 degrees within 15 minutes. It uses a built-in fan to circulate hot air evenly throughout the chamber. Thermal insulation keeps the box warm for efficient drying.
Pros
- Quick heating
- No assembly needed
- Insulated walls
- Timer countdown
Cons
- One spool only
- Basic display
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A knob and display screen make operation simple. You can track drying hours easily via a countdown timer. It is ready out of the box without any assembly steps required.
This model is great for single spool users. It solves moisture issues for standard materials like PLA and ABS. The sealed design ensures your filament stays dry when not in use.
Ideal for casual printers needing reliable drying. It is easy to use and effective. Pick this if you want a straightforward unit for maintaining filament quality.
Quick Heat Up
Reaches 65 degrees within 15 minutes for fast drying.
Simple Operation
Display screen and knob make it easy to operate.
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8. SUNLU S4 – Consistent Multi-Spool Performance
SUNLU S4 3D Printer Filament Dryer 4 Spools
4 Spool Capacity
3 Circulation Fans
350W Heater
8 Exit Holes
This SUNLU S4 model offers consistent performance for four spools. Its three fans ensure temperature remains uniform across the entire area. The 350W heater provides high efficiency for faster drying results.
Pros
- Supports large rolls
- Even heating
- Flexible exits
- Customizable timer
Cons
- Heavy structure
- Large size
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Eight filament exit holes provide flexibility for various printer setups. You can adjust the timer from 0 to 99 hours as needed. It supports a wide range of materials including Nylon and PC.
The design is robust enough for heavy duty use. Users can modify it for 3kg rolls easily. This durability makes it a long-term asset for any serious printing workshop environment.
Choose this for reliability and high capacity. It ensures even drying without hot spots. Perfect for users running multiple jobs simultaneously needing consistent output.
360 Surround Heating
Ensures consistent temperature across the entire area.
DIY Customization
Can be modified to dry larger rolls easily.
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9. SUNLU SP2 – Versatile Large Spool Support
SUNLU 3KG Filament Dryer SP2 & Storage Box
3KG Support
250W Heater
Temp 70C
HD Touch Screen
The SUNLU SP2 supports up to 3kg spools for larger projects. Its 250W heater heats quickly to 70 degrees in just 15 minutes. This efficiency saves time when you need dry filament ready.
Pros
- Holds larger spools
- Fast heating speed
- Detachable base
- Silicone holes
Cons
- Average seal quality
- Bulky design
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The base is detachable to allow easy storage after drying. You can feed directly into the printer while it dries. Its HD touch screen displays humidity and time clearly for easy operation.
It balances capacity with functional heating speed well. While bulky, the rollers make handling large spools easier. It is a good compromise for those needing more than standard 1kg support.
Pick this for heavy spool needs. The quick heating ensures minimal wait times. Ideal for users with large rolls wanting efficient drying results.
15 Minute Heat Up
Equipped with 250W heater for rapid heating to 70 degrees.
Sealing Storage
Lid has sliding latches to ensure a great seal.
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10. SUNLU S2 – Reliable Budget Friendly Unit
SUNLU Filament Dryer S2
2 Spool Capacity
Fast Heating
Touch Screen
Translucent Lid
The SUNLU S2 is a reliable choice for basic drying needs. It can revive damp filament that might otherwise be wasted. You can customize drying time and temperature easily using the touch screen.
Pros
- Revives damp filament
- Customizable settings
- Large capacity
- Easy to use
Cons
- Basic features
- Average build
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With a large capacity of 265x274x118mm, it fits most standard spools. The translucent lid lets you check on filament without opening. It is a user-friendly option for beginners needing moisture control.
It offers good value for its price point. While not high-end, it solves common stringing and clogging issues. It is particularly helpful for printers in humid locations like basements.
Choose this if you need a simple solution. It keeps filament dry during printing. A solid entry option for improving print quality.
Spindle Even Drying
Built-in spindle ensures filament spins continuously for even drying.
Simple Settings
Large touch screen makes setting temps and times easy.
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Buying Guide – How to Choose the Best Filament Dryer for 3D Printing
Choosing the right dryer depends on your materials, budget, and printing volume. These factors help you find a model that ensures optimal performance and longevity.
Spool Capacity
Consider how many spools you need to store and dry at once. Budget boxes hold one or two 1kg rolls, while premium units like the SUNLU S4 support four or more. If you run multiple printers, choose one with multiple exit holes.
Ensure the internal size fits your standard spool diameter. Avoid units that are too small for your specific filament brand.
Temperature Range
Different filaments require different temperatures. PLA and PETG usually need 45 to 50 degrees, while Nylon and PC might need 70 to 85 degrees. Check the max temp to support your advanced materials.
Select a dryer with a high enough max temperature for your most demanding materials to avoid under-drying.
Heating Element and Speed
PTC heaters are generally faster and safer than heating pads. Units with fans circulate air for uniform heating and faster moisture removal. This reduces drying time and prevents hot spots.
Prioritize models with high wattage and fans for consistent and rapid drying results.
Sealing and Storage
A good dryer should also act as a storage box. Look for silicone seals or tight-fitting lids to prevent moisture re-absorption after drying. This is crucial for hygroscopic materials like Nylon.
Choose a unit with a robust seal to maintain dry conditions between prints.
Monitoring Controls
Digital touch screens or knob interfaces allow precise control. LCD displays that show humidity and temperature help you track the process accurately. This reduces guesswork during drying cycles.
Look for units with clear displays and customizable settings for better management.
Feeding Mechanism
Smooth feeding is essential to avoid tangling. Some dryers include Teflon tubes or multiple exit ports. Ensure the outlet design matches your printer setup for smooth filament feeding.
Check for included tubes or adaptable outlets to ensure easy connection to your printer.
Price and Value
Basic boxes are affordable but may lack advanced features. Premium units cost more but offer higher capacity and better heating. Balance your budget with the features you actually need.
Invest in a unit that matches your current material usage to get the best value.
Build Quality
A durable box ensures safety and longevity. Insulated walls prevent heat loss and scalding. Check the weight and sturdiness to ensure it holds up to frequent use.
Select a robust model that will withstand long-term use in your workspace.
How to Use and Care for Your Filament Dryer for 3D Printing
Set the temperature based on your material type. Use a higher setting for engineering plastics and a lower one for PLA. Ensure the spool is placed inside without touching the heating element directly.
Run the dryer for at least 4 to 6 hours before printing. For older filament, extend this time to ensure all moisture is removed. You can also run it while printing for continuous dryness.
After drying, keep the unit sealed to maintain dryness. Use silicone plugs to close the feed hole when not in use. Check the humidity display regularly to ensure optimal conditions.
Frequently Asked Questions
How often should I dry my 3D printer filament?
You should dry filament before first use and whenever you suspect moisture. If you live in a humid climate, consider drying it weekly. Always dry before printing with sensitive materials like Nylon or TPU.
Can a filament dryer save wet filament?
Yes, most dryers can revive damp filament by removing absorbed moisture. It is often cheaper to dry old filament than to buy new spools. However, severely degraded plastic may still break during printing.
What temperature is best for PLA drying?
PLA generally dries best at 45 to 50 degrees Celsius. Exceeding this temperature can cause the filament to deform or melt. Always check your specific manufacturer's recommended drying temperature first.
Do I need a dryer if I use vacuum bags?
Vacuum bags help storage, but they cannot remove existing moisture. A dryer actively removes water from the filament before you put it in a bag. It is the best method to ensure filament is truly dry.
Does a filament dryer improve print quality?
Yes, dry filament significantly reduces stringing, bubbling, and layer adhesion issues. It leads to smoother surfaces and more reliable prints. It is a vital tool for achieving professional results consistently.
Can I dry large 3kg spools?
Some larger dryers like the SUNLU SP2 support 3kg spools. Standard units usually only hold 1kg spools. Check the internal dimensions of the dryer before purchasing to ensure it fits your spool size.
Is it safe to leave the dryer running unattended?
Most modern dryers have safety features to shut off after a set time. However, it is safer to check it periodically. Always ensure the unit is in a well-ventilated area away from flammable materials.
How long does it take for filament to dry?
Drying time varies by material and humidity. It typically takes 4 to 6 hours for PLA and up to 12 hours for Nylon. Check the humidity monitor to confirm it is dry before printing.
Final Thoughts on Choosing the Best Filament Dryer for 3D Printing
We have reviewed the top ten filament dryers for October 2026. Each model offers unique benefits for different needs and budgets. From the affordable SUNLU S2 to the high-capacity Creality Space Pi X4, there is a solution for every maker.
Prioritize capacity and temperature range based on your specific filament needs. If you use engineering plastics often, a unit with higher heat is essential. For general printing, a compact box with good sealing works perfectly.
Remember that prices change frequently so check current listings before purchasing. Investing in a good dryer will save you money on wasted filament and failed prints. Start drying today for better and more reliable results.