The Polymaker PolyDryer wins for serious 3D printers with its versatile, well-sealed design, while the Comgrow Filament Dryer at $74.79 suits budget beginners with solid drying power.
Moisture in 3D printing filaments can ruin your prints, causing stringing, poor layer adhesion, or failed builds. If you’ve faced these issues with materials like PLA, PETG, or Nylon, you’re not alone. Filament dryers are the solution, removing moisture to ensure high-quality prints. In this in-depth guide, we explore the best filament dryers for 2025, based on hands-on tests, user reviews, and the latest market trends, helping you choose the perfect model for your 3D printing setup.
The Best Filament Dryers for 3D Printing: Top 8 Picks (Web Story)
Why Should You Consider a Filament Dryer?
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Wondering if a filament dryer is worth the investment? While sealed bags or containers help, they can’t fully combat moisture absorption over time. Many filaments, like Nylon and PETG, are hygroscopic, absorbing water from the air, which leads to:
Understanding Moisture and Filament Quality
Moisture can wreak havoc on your 3D printing projects. When filament absorbs water, it can cause the following issues:
- Bubbling: When heated during extrusion, trapped moisture turns into steam and creates bubbles in the filament. This leads to an uneven surface finish and weak layers.
- Poor Layer Adhesion: Moisture-laden filaments may not bond properly during printing, resulting in weak spots and potential failures.
- Stringing and Oozing: Excess moisture can cause stringing between parts of your print as the filament expands and contracts unpredictably.
Understanding these issues can help you appreciate the importance of keeping your filaments dry.
How to Choose the Best Filament Dryer
Here’s what to consider when selecting a filament dryer:
- Temperature Control: Adjustable settings are crucial. PLA needs 45-50°C, while Nylon or PAHT may require 70-85°C.
- Capacity: Match the dryer’s capacity to your needs—single-spool for hobbyists, multi-spool (e.g., 4kg) for print farms.
- Ease of Use: Look for intuitive interfaces, like touchscreens or one-button controls, for hassle-free operation.
- Noise Level: Quiet models (<40dB) are ideal for home or office use.
- Safety Features: Overheat protection and auto-shutoff are must-haves for safe, long-term use.
- Portability: Compact designs suit small workspaces or mobile setups.
Best Filament Dryers for 3D Printing in the Market
1. Polymaker 3D Printing Filament Dryer and Storage Box
The Polymaker PolyDryer is a versatile, modular solution for enthusiasts, combining drying and storage. Its excellent sealing and 360° airflow make it ideal for common filaments like PLA and PETG, ensuring print-ready quality.
Key Features:
- Modular Design: Dryer dock with stackable storage boxes for customizable setups.
- 360° Airflow: Even drying without filament damage.
- Preset Heat Control: Three power levels up to 60°C with adjustable timers.
- Compatibility: Supports 1kg spools (1.75mm/2.85mm) for PLA, ABS, PETG, TPU, Nylon.
- Color-Changing Desiccant: Visual humidity indicator for easy monitoring.
Pros
- Customizable storage for multiple spools.
- Durable, high-quality build.
- User-friendly controls with minimal setup.
- Excellent sealing prevents moisture ingress.
Cons
- 60dB noise level may disturb quiet environments.
- 60°C max temp limits use for high-temp filaments like Nylon.
- Firm latches can be hard to open.
Related: Polymaker PolyDryer Review: Top Filament Dryer to Buy in 2025
2. Creality Space Pi Filament Dryer Plus
The Creality Space Pi Plus is a reliable choice for hobbyists and pros, offering dual-spool drying with real-time monitoring. Its 3.7-inch touchscreen and quiet operation make it a favorite for small studios.
Key Features:
- 360° PTC Heating: Dual heaters for uniform drying.
- Temperature Range: 45-70°C, adjustable for various filaments.
- LCD Touchscreen: Monitors humidity and temperature in real time.
- Flexible Timing: 0-48 hours drying cycles.
Pros
- Fast, even drying for PLA, PETG, and ABS.
- Quiet operation (~45dB).
- Power-off memory retains settings.
- Supports 1.75mm/2.85mm filaments.
Cons
- No humid air exhaust (DIY solutions available).
- Voltage-specific (110V or 240V).
- Some users report slow support response.
Related: Creality Space Pi Plus Filament Dryer Review: Say Goodbye to Moisture Issues
Related: Creality Official Filament Dryer Box 2.0 Review
3. Comgrow 3D Printer Filament Dryer Box
The Comgrow Filament Dryer is a budget-friendly powerhouse, perfect for beginners. At $41.99, it offers solid drying for two 1kg spools, making it a great entry-level choice.
Key Features:
- Capacity: Two 1kg spools or one <150mm wide.
- Temperature Range: 40-50°C.
- 2-Inch LCD: Displays temperature and humidity.
- Sealed Design: Silicone sheath and Teflon tube for moisture protection.
Pros
- Affordable at $41.99.
- Compact and easy to store.
- Direct printing from dryer enhances workflow.
- Good for PLA, ABS, PETG.
Cons
- 50°C max temp limits advanced filament use.
- Interface can be unintuitive.
- Inconsistent performance across units.
Related: Comgrow SH02 Filament Dryer Box Review: Does it Really Work?
4. Sunlu FilaDryer S4
The SUNLU FilaDryer S4 is a high-capacity beast, drying up to four 1kg spools simultaneously. Its 350W heater and smart humidity control make it ideal for multi-printer setups.
Key Features:
- High Capacity: Four 1kg spools.
- Temperature Range: 35-70°C.
- 4.6-Inch Touchscreen: Easy navigation and filament presets.
- Drying While Printing: Continuous drying for uninterrupted workflows.
Pros
- Perfect for print farms or multi-color printing.
- Three circulation fans for fast drying.
- Smart humidity monitoring resumes drying as needed.
- Supports 1.75mm/2.85mm/3.00mm filaments.
Cons
- Noisy operation (50-60dB).
- Large footprint requires space.
- Some durability concerns (e.g., thermistor issues).
Related: Why Risk Poor Prints? SUNLU FilaDryer S4 Guarantees Dry, Ready-to-Use Filament!
Related: SUNLU FilaDryer SP2: 2-in-1 Dryer Drops May 19!
5. Sovol SH01 Filament Dryer
The Sovol SH01 is a quiet, affordable option for drying two 1kg spools. Its upgraded fan and sealing make it a strong contender for home users at $41.99.
Key Features:
- Capacity: Two 1kg spools.
- Temperature Range: 40-50°C.
- 2-Inch LCD: Real-time temperature/humidity monitoring.
- Silicone Seal: Long-term storage without power.
Pros
- Quiet operation (~40dB).
- Competitive price.
- Four filament feed holes for flexibility.
- Effective for PLA, ABS, PETG.
Cons
- Limited 6-12 hour timer.
- No memory function after power-off.
- Basic features compared to premium models.
Related: Sovol SH01 Filament Dryer 2025 Review: Best Budget Pick for 3D Printing?
6. EIBOS 3D Printer Filament Dryer Box
The EIBOS Polyphemus stands out with its auto-rotation feature, ensuring even drying for up to 3kg spools. Its advanced humidity control is perfect for demanding users.
Key Features:
- Auto-Rotation: 360° heating via geared motor.
- Capacity: 1kg or 3kg with extension kit.
- Temperature Range: 20-70°C.
- Humidity Control: Maintains low moisture levels.
Pros
- Uniform drying improves filament quality.
- Large capacity for bigger spools.
- Quiet at 35-36dB.
- Supports 1.75mm/2.85mm/3.00mm filaments.
Cons
- High cost ($127.99).
- Some fan noise after prolonged use.
- Limited customer support reported.
7. THETA°NanoHex° Filament Dryer Box
The THETA NanoHex is the cheapest option at $29.00, offering one-button simplicity and AI-driven humidity control for single-spool drying.
Key Features:
- One-Button Operation: Starts drying instantly.
- Adaptive Modes: AI optimizes humidity and energy use.
- Fast Dehumidification: 10-minute initial moisture removal.
- Compatibility: 1.75mm/2.85mm/3.00mm for PLA, ABS, Nylon, etc.
Pros
- Budget-friendly at $29.00.
- Energy-efficient with quick drying.
- Quiet operation.
- ROHS-compliant and recyclable.
Cons
- No display for real-time feedback.
- Single-spool capacity limits scalability.
- Build feels flimsy to some users.
8. Kingroon Filament Dryer Box
The Kingroon Filament Dryer is the ultimate budget pick at $21.99, delivering effective drying for 1kg spools with customizable settings.
Key Features:
- Temperature Settings: 50°C, 60°C, 70°C.
- Timer: 0-24 hours.
- 360° Heating with Fan: Fast moisture expulsion.
- Compatibility: 1.75mm/2.85mm/3.00mm for PLA, ABS, PETG, TPU.
Pros
- Cheapest option with solid performance.
- Adjustable settings for flexibility.
- Safety features include auto-standby.
- Lightweight and translucent design.
Cons
- Limited to 1kg spools.
- 70°C max temp insufficient for some high-temp filaments.
Related: Kingroon Filament Dryer Box 2025 Review: Top Features, Pros, Cons & Where to Buy
9. Creality Space Pi X4 Filament Dryer
The Creality Space Pi X4 is a premium multi-spool dryer, handling up to four 1kg spools or two 2kg spools with dual independent chambers. Its 85°C max temp and quiet operation make it ideal for advanced users and print farms.
Key Features:
- Dual Independent Chambers: Each holds two 1kg or one 2kg spool, with separate 200W PTC heaters.
- Temperature Range: Up to 85°C for engineering filaments like PAHT, PC.
- Active Dehumidification: Real-time humidity monitoring and desiccant regeneration.
- Whisper-Quiet: <40dB noise level.
- Quad-Axis Drying: Supports simultaneous drying and printing for up to 4 spools.
Pros
- Fast 2-hour drying with 85°C technology.
- High capacity for multi-printer setups.
- Energy-efficient (40% less power than competitors).
- Lifetime technical support and 1-year replacement.
Cons
- Premium price ($159.00).
- Larger footprint (8″D x 15″W x 8″H).
- Plastic build may feel less premium for price.
10. SUNLU FilaDryer E2
The SUNLU FilaDryer E2 is a high-temperature dryer and annealing chamber, perfect for engineering filaments like ABS and Nylon. Its dual-chamber design and 110°C max temp make it a top choice for pros.
Key Features:
- High-Temperature Drying: Up to 110°C for demanding materials.
- Annealing Mode: Strengthens printed parts.
- Dual Chambers: Dries two 1kg spools simultaneously.
- Touchscreen Controls: Presets and safety features.
Pros
- 2-in-1 drying and annealing functionality.
- Fast heating with 500W PTC heater.
- Even heat distribution via dual fans.
- Overheat protection and auto-shutdown.
Cons
- Expensive at $279.99.
- Limited to 2kg capacity.
- Fan noise noticeable during operation.
Comparison Table of Filament Dryers
This comparison table summarizes the key features of above 10 filament dryers. Each dryer has its unique strengths and weaknesses catering to different user needs in the realm of 3D printing.
| Filament Dryer | Capacity | Temperature Range | Drying Time | Key Features | Pros | Cons | Price |
|---|---|---|---|---|---|---|---|
 Polymaker PolyDryer | 1 kg | Up to 60°C (preset) | Continuous | Modular design, 360° airflow, color-changing desiccant | Efficient drying, versatile compatibility, excellent sealing | Noisy (~60dB), limited temp | Buy Now ($74.79) |
 Creality Space Pi Plus | 2 kg (two 1kg) | 45°C to 70°C | 0-48 hours | LCD touchscreen, real-time monitoring, power-off memory | Fast drying, quiet (~45dB), versatile | No exhaust, voltage-specific | Buy Now ($65.99) |
 Comgrow Filament Dryer | 2 kg (two 1kg) | 40°C to 50°C | 6-12 hours | Sealed design, LCD display | Affordable, compact, direct printing | Limited temp, inconsistent units | Buy Now ($41.99) |
 SUNLU FilaDryer S4 | 4 kg (four 1kg) | 35°C to 70°C | 0-99 hours | Touchscreen, multi-spool, smart humidity | High capacity, effective drying | Noisy, bulky | Buy Now ($139.99) |
 Sovol SH01 | 2 kg (two 1kg) | 40°C to 50°C | 6-12 hours | Silicone seal, real-time monitoring | Affordable, quiet (~40dB) | No memory, basic features | Buy Now ($41.99) |
 EIBOS Polyphemus | 3 kg (with extension) | 20°C to 70°C | Customizable | Auto-rotation, humidity control | Even drying, large capacity | Pricey, durability concerns | Buy Now ($127.99) |
 THETA NanoHex | 1 kg | Adaptive | 10 min + cycles | One-button, AI humidity control | Cheap, energy-efficient | No display, single-spool | Buy Now ($29.00) |
 Kingroon Filament Dryer | 1 kg | 50°C, 60°C, 70°C | 0-24 hours | Built-in fan, auto-standby | Cheapest, effective | Limited capacity, weighty | Buy Now ($21.99) |
 Creality Space Pi X4 | 4 kg (four 1kg) | Up to 85°C | 2-48 hours | Dual chambers, <40dB, dehumidification | Fast, quiet, multi-spool | Pricey, plastic build | Buy Now ($159.00) |
 SUNLU FilaDryer E2 | 2 kg (two 1kg) | 40°C to 110°C | 0-48 hours | Annealing mode, dual chambers | High-temp, versatile | Expensive, noisy fans | Buy Now ($359.99) |
Buying Guide: Which Filament Dryer Suits You?
- Beginners: Kingroon ($21.99) or Comgrow ($41.99) for affordability and simplicity.
- Hobbyists: Polymaker PolyDryer ($74.79) or Creality Space Pi Plus ($65.99) for reliable performance and storage.
- Print Farms: SUNLU FilaDryer S4 ($139.99) or Creality Space Pi X4 ($159.00) for high-capacity, multi-spool drying.
- Advanced Users: SUNLU FilaDryer E2 ($279.99) for engineering filaments and annealing.
Consider noise levels for home use and check user reviews on platforms like Amazon or Reddit for real-world insights.
Conclusion
The Polymaker PolyDryer ($74.79) is our top pick for its balance of versatility, sealing, and durability, making it ideal for most 3D printing enthusiasts. Budget users will love the Kingroon ($21.99) for its value, while pros needing multi-spool or high-temp drying should opt for the Creality Space Pi X4 ($159.00) or SUNLU FilaDryer E2 ($279.99). Choose based on your filament types, printing volume, and workspace constraints.
By following these guidelines and choosing the right equipment, you’ll be well on your way to achieving high-quality prints with minimal hassle!
Frequently Asked Questions (FAQs)
What’s the best filament dryer for beginners?
The Kingroon ($21.99) or Comgrow ($41.99) for their low cost and ease of use.
How long to dry Nylon?
6-12 hours at 60-70°C; use the Space Pi X4 or E2 for faster results at 85-110°C.
Can I anneal prints in these dryers?
Yes, the SUNLU FilaDryer E2 offers a dedicated annealing mode to strengthen prints
Why do fans matter?
Fans ensure even heat distribution, reducing drying time (e.g., Space Pi X4’s 2-hour drying).
What’s the quietest dryer?
Creality Space Pi X4 (<40dB) or Sovol SH01 (~40dB) for minimal noise.
Can I dry while printing?
Yes, models like SUNLU S4 and Space Pi X4 support simultaneous drying and printing.
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