Nothing ruins a 3D print faster than wet filament. You hear the popping sound, see the stringing, watch layers refuse to stick, and a 12-hour print becomes scrap plastic. I learned this the hard way after ruining a batch of PETG parts during a humid summer, which sent me down the rabbit hole of finding the best filament dryers for 3D printing.
Moisture absorption is a silent killer for hygroscopic materials like PLA, PETG, TPU, and nylon. Water inside the filament turns to steam during extrusion, causing bubbles, weak layer adhesion, and ugly surfaces. A dedicated filament drying box solves this by using PTC heating elements and forced air circulation to pull moisture out of your spools before you print.
Our team compared 8 of the most popular filament dryers on the market, looking at heating performance, spool capacity, temperature range, ease of use, and real-world reliability. Whether you need a budget single-spool unit or a four-spool drying station for multi-color setups, this guide covers the top options worth your money in 2026.
Top 3 Picks for Filament Dryers (September 2026)
Before diving into the full reviews, here are our three standout picks based on weeks of testing and comparison. These cover the best overall performance, the best multi-spool value, and the best budget option.
Best Filament Dryers for 3D Printing in 2026
| Product | Specifications | Action |
|---|---|---|
| Creality Space Pi SE Pro |
|
Check Latest Price |
 SUNLU FilaDryer S4 |
|
Check Latest Price |
 SUNLU FilaDryer S1 Plus |
|
Check Latest Price |
 SUNLU FilaDryer S2 |
|
Check Latest Price |
 Polymaker PolyDryer |
|
Check Latest Price |
 Comgrow SH02 Dual-Spool |
|
Check Latest Price |
 Comgrow Dual-Spool Dryer Box |
|
Check Latest Price |
 Sovol SH01 Filament Dryer |
|
Check Latest Price |
1. Creality Space Pi SE Pro – Fastest Heating Performance
Creality 2026 New Upgrade Filament Dryer Box Pro, Space Pi SE with High PTC Efficiency & Precision Sensor for 1KG Spools 45~65℃, 3D Printer Filament Dehydrator for PLA PETG ABS ASA TPU
PTC 360 heating
45-65C range
Heats in 15 min
1KG spool capacity
Pros
- Heats to 65C within 15 minutes
- 360 degree hot air circulation
- Thermal insulation prevents burns
- Wide filament compatibility including nylon PA
Cons
- Only fits single 1KG spool
I started testing the Creality Space Pi SE Pro during a particularly humid week, and the first thing that struck me was how fast it heats up. Creality claims 65 degrees Celsius within 15 minutes, and my infrared thermometer confirmed it hit that target right on schedule. That is notably quicker than most budget dryers I have used.
The 360-degree PTC hot air circulation makes a visible difference in print quality. After drying a spool of PETG for about 6 hours, stringing on my calibration prints dropped dramatically, and layer adhesion improved to the point where parts would not delaminate even under stress. The thermal insulation cotton lining the inner walls does double duty by keeping heat in and keeping the exterior cool enough to touch safely.
Where this dryer really shines is compatibility. It handles PLA, PETG, TPU, ABS, ASA, PP, PC, and PA (nylon) without breaking a sweat. The 45-65 degree temperature range covers almost every common filament I print with, and the 0-24 hour timer gives plenty of flexibility for long drying sessions.
The main limitation is capacity. This unit is designed for a single 1KG spool, so if you run multi-color or multi-material setups, you will need to dry spools one at a time or look at a larger option. For single-spool printers, though, this is hard to beat at this price point.
Who Should Buy This Dryer
If you print with a single extruder and want fast, even drying across a wide range of filament types, the Creality Space Pi SE Pro is an excellent choice. It is especially good for people who print nylon and other engineering materials that need higher drying temperatures. The 6-month warranty adds peace of mind for a unit at this price.
Beginners will appreciate the straightforward controls and the built-in safety features. You set the temperature and timer, and the dryer handles the rest with consistent, even heating that does not require babysitting.
Real-World Drying Performance
Reddit users on r/3Dprinting consistently praise the Creality Space Pi series for its reliable heating and build quality. The auto-drying feature gets frequent mention as a genuine time-saver, especially for users who leave filament in the dryer overnight before a morning print run.
One thing to keep in mind is that the unit does not include a built-in hygrometer for humidity readout. You can judge dryness by feel and print results, but users who want precise humidity monitoring may want to add a separate sensor inside the chamber.
2. SUNLU FilaDryer S4 – Best Multi-Spool Powerhouse
SUNLU S4 3D Printer Filament Dryer, Black
4 spool capacity
350W PTC heater
35-70C
0-99 hour timer
Pros
- Dries up to 4 spools simultaneously
- 350W heater is 50 percent more efficient
- 3 circulation fans for 360 heating
- 8 filament exit holes for multi-printer setups
Cons
- Highest price in the lineup
- Larger footprint needs desk space
The SUNLU FilaDryer S4 is the dryer I reach for when I need to prep multiple spools for a big print job. Being able to dry four 1KG spools at once is a genuine workflow upgrade. No more swapping spools in and out one at a time while the clock ticks down on your project deadline.
The 350W PTC heater is serious hardware. SUNLU claims 50 percent higher heating efficiency than their S2 model, and my testing backs that up. The three circulation fans create true 360-degree surround heating that reaches every spool evenly, which matters because uneven drying leads to inconsistent print quality across a multi-spool batch.
The temperature range of 35-70 degrees Celsius covers everything from delicate PLA to demanding nylon. The 0-99 hour timer is one of the most flexible I have seen, letting you set extended drying sessions for heavily saturated filament or use the power-saving storage mode for long-term holding.
Eight filament exit holes mean you can feed multiple printers directly from the dryer while it runs. This makes the S4 a natural fit for multi-color printing setups where you want to keep several spools warm and dry throughout a long print. Users on Reddit frequently compare it favorably against running multiple single-spool dryers.
Is the S4 Worth It for You
If you run a multi-printer farm or regularly print with multiple colors and materials, the S4 pays for itself in time saved. Drying four spools in one pass instead of cycling through them one at a time literally saves days over a month of heavy printing.
The unit is also versatile enough to dry 3KG large rolls or even be repurposed as a shoe dryer, which some users have reported. The generous internal dimensions (450 x 175 x 207mm) accommodate most standard and oversized spools without issue.
Long-Term Reliability and Build
The S4 has an 83 percent 5-star review rate, which is the highest among the products in this roundup. Users report consistent heating performance over months of regular use, and the power-saving storage mode helps reduce electricity costs when the unit runs continuously.
The main trade-off is the physical size. At 460 x 220 x 310mm, this dryer needs dedicated desk space. If your workspace is tight, measure carefully before committing to the S4.
3. SUNLU FilaDryer S1 Plus – Best Budget Option
SUNLU Filament Dryer Box 2026 New Upgrade S1 Plus, Black
Fan-assisted drying
35-55C range
2 inch LCD
1 year warranty
Pros
- Fan design speeds up moisture discharge
- 2 inch LCD for real-time monitoring
- Dries while printing
- Compatible with PLA PETG ABS TPU Nylon PA
Cons
- Lower max temperature of 55C
- Smaller capacity than S2 or S4
The SUNLU FilaDryer S1 Plus proves that you do not need to spend a lot to get effective filament drying. This is the dryer I recommend to anyone just starting out with 3D printing who wants to protect their filament without a big investment. The fan-assisted design moves moist air out of the chamber faster than passive dryers manage.
The 2-inch LCD screen displays temperature, time, and humidity in real time. It is not as feature-rich as the S2’s 4.6-inch touchscreen, but it gives you the information you need at a glance. I found the display readable even in bright workshop lighting.
Temperature range runs from 35 to 55 degrees Celsius. This covers PLA and PETG drying perfectly, and it handles TPU reasonably well. For nylon and other high-temperature filaments, the 55-degree ceiling may be limiting, but most beginners are not printing with those materials anyway.
The drying-while-printing feature is a nice bonus at this price point. You can run PTFE tubing from the dryer to your printer and keep filament warm during the entire print, which is particularly useful for long prints in humid environments.
Best Use Cases for the S1 Plus
This dryer is ideal for PLA and PETG printing in moderate humidity environments. If you mostly print standard materials and want reliable moisture control without spending over 50 dollars, the S1 Plus delivers excellent value with over 1,100 reviews backing it up.
It is also a good backup or secondary dryer. If you already own a larger unit, having a budget dryer on the side for a quick PLA dry before printing is genuinely convenient.
What to Watch Out For
The 55-degree maximum temperature is lower than competitors like the Creality Space Pi or SUNLU S2. If you plan to print with nylon, polycarbonate, or other engineering filaments that need higher drying temps, you will want to step up to a model with a 65-70 degree range.
The maximum spool capacity of 210 x 89mm means it handles standard 1KG spools fine but may struggle with oversized or wide spools. Check your spool dimensions before purchasing.
4. SUNLU FilaDryer S2 – Best Touch Screen Experience
SUNLU Official Filament Dryer S2, for PLA PETG ABS Filament, Black
4.6 inch touch screen
360 heating
Up to 70C
Dual heating sheets
Pros
- 4.6 inch LCD touch screen
- 360 degree all-round heating
- Dual heating sheets with fan
- Maximum temperature 70C
Cons
- Some humidity detection accuracy issues reported
The SUNLU FilaDryer S2 steps things up with a 4.6-inch LCD touchscreen that makes operation genuinely intuitive. Instead of cycling through buttons, you tap directly on temperature and time values to adjust them. SUNLU claims 30 percent faster heating than their previous models, and my testing showed it reaching target temps noticeably quicker than the S1 Plus.
The dual heating sheet design combined with the built-in fan creates genuine 360-degree circular heating. This is not just marketing speak. Temperature distribution tests showed consistent heat across the entire spool, which translates to more uniform drying and better print consistency.
With a maximum temperature of 70 degrees Celsius, the S2 handles every filament type I throw at it, including nylon and polycarbonate blends. The compatibility list covers PLA, PETG, ABS, TPU, nylon, PA, and PC, making it one of the most versatile single-spool dryers available.
The touchscreen interface deserves special mention because it shows real-time humidity alongside temperature and timer. Being able to see all three values on a single clear display helps you judge when your filament is actually ready to print. The 4.6-inch screen is large enough to read from across the room.
Humidity Monitoring Accuracy
Some users have reported that the humidity readings on the S2 can drift over time. Reddit threads on r/3Dprinting mention that the built-in sensor sometimes reads higher than actual humidity after extended use. If precise humidity measurement is critical for your workflow, consider cross-checking with a standalone hygrometer.
That said, the temperature performance is reliable and consistent. Even with imperfect humidity readings, the drying results based on print quality improvements speak for themselves.
How It Compares to the S1 Plus
The S2 costs slightly more than the S1 Plus but offers significant upgrades: higher maximum temperature (70C vs 55C), a larger touchscreen, faster heating, and dual heating sheets. If you print with nylon or other high-temp materials, the S2 is worth the extra cost over the S1 Plus.
If you only print PLA and PETG, the S1 Plus remains the better value. The S2’s advantages matter most for users who need higher temperatures and better control over the drying process.
5. Polymaker PolyDryer – Best Integrated Storage Solution
Polymaker Filament Dryer & Storage Box Polydryer for 1kg PA Nylon PLA PETG
Modular dry dock design
360 airflow
Built-in hygrometer
Heat and seal system
Pros
- Consistent drying with integrated storage
- Dry store and print without breaking seal
- Built-in hygrometer monitoring
- Works with nylon PLA PVB PETG ABS TPU
Cons
- Some long-term durability concerns reported
The Polymaker PolyDryer takes a different approach from the other dryers in this roundup. Instead of just heating a spool, it creates a complete drying and storage ecosystem. The modular design includes a Dry Dock heating unit and a PolyDryer Box that seals filament with desiccant protection for ongoing moisture defense.
What makes this system appealing is that you can dry, store, and print from the same sealed container without exposing filament to ambient humidity between steps. For users in high-humidity environments, this closed-loop approach keeps filament in better condition over longer periods than open-chamber dryers.
The built-in hygrometer lets you monitor humidity levels inside the storage box at any time. This is genuinely useful because you can see when desiccant needs refreshing or when humidity is creeping up. The 360-degree airflow design ensures even drying across the entire spool.
Compatibility is broad, covering PA nylon, PLA, PVB, PETG, ABS, and TPU in 1.75mm, 2.85mm, and 3.00mm diameters. Polymaker clearly designed this for their own filament lineup first, but it works equally well with filament from other manufacturers.
The Sealed Storage Advantage
The real selling point of the PolyDryer is the sealed storage capability. After drying, you can disconnect the heating unit and leave the filament in the sealed box with desiccant packs. This keeps filament dry for weeks without power, which is perfect for users who print intermittently.
The modular design also means you can buy additional storage boxes and a single Dry Dock to service multiple spools. This is a cost-effective way to build a drying and storage system if you manage multiple filament types.
Durability Considerations
Some users have reported concerns about long-term durability of the sealing mechanism. The seal needs to maintain integrity over many opening and closing cycles, and a few reviewers noted degradation after several months of heavy use. Polymaker offers multiple box variants, so consider the storage-only options as backups.
Despite this concern, the PolyDryer earns strong marks for its innovative approach to the drying-and-storage problem. The 70 percent 5-star rate reflects genuine satisfaction with the core drying performance.
6. Comgrow SH02 – Best Dual-Spool with Presets
Comgrow Filament Dryer Box, SH02 Dry Box Filament Sealed Storage Box 3D Printer 2 Spools Holder with PTC Fast Heater, Filament Dehydrator with Touch Screen Compatible with PLA PETG TPU ABS 1.75/2.85mm
150W PTC heater
2 spool capacity
9 filament presets
40-70C range
Pros
- Dries 2 spools simultaneously
- One-key preset for 9 filament types
- Reaches 50C in 7 minutes
- Intelligent safety auto shut-off
Cons
- Manufactured by Creality 3D not original Comgrow
The Comgrow SH02 is my go-to recommendation for anyone who needs dual-spool drying without jumping to the four-spool capacity and price of the SUNLU S4. The 150W PTC heater reaches 50 degrees Celsius within 7 minutes, which is among the fastest warm-up times in this category.
The standout feature is the one-key temperature setting for 9 different filament types. Instead of looking up the correct drying temperature for PLA versus TPU versus ABS, you simply press the button for your material and the dryer applies the right preset automatically. This removes guesswork entirely.
The temperature range of 40-70 degrees Celsius is generous for a dual-spool dryer at this price. It covers the full spectrum from basic PLA through nylon and polycarbonate. The 98-hour maximum drying time means you can set extended sessions for heavily saturated spools without needing to reset the timer.
Safety features are well-implemented. The PTC heater automatically cuts off at 130 degrees, and the unit sounds an alarm if the fan stops rotating. These protections matter because filament dryers run unattended for hours, and thermal safety is not something to compromise on.
Preset Convenience Factor
The 9-filament preset system is more than a gimmick. If you switch between PLA, PETG, TPU, and ABS regularly, having one-touch presets saves time and prevents the mistake of drying PLA at nylon temperatures (which would deform the filament). The presets cover PLA, TPU, PETG, ABS, ASA, PVA, PC, PA, and PP.
For users new to filament drying, this feature alone justifies the purchase. It removes the learning curve and lets you focus on printing instead of researching optimal drying temperatures.
Sealed Design Quality
The SH02 uses sealing rings on the upper and lower covers, the filament outlet hole, and the bottom sealing plate. This multi-layer sealing approach is more thorough than many competitors at similar prices. With 73 percent 5-star reviews across nearly 1,450 ratings, the build quality clearly meets user expectations.
Note that this unit is manufactured by Creality 3D under the Comgrow brand. Some users have flagged this in reviews, but the build quality and performance are consistent with Creality’s standards.
7. Comgrow Filament Dryer Box – Best for Storage Capacity
Comgrow 3D Printer Filament Dryer Box, Comgrow 3D Filament Storages, Keeping Filaments Dry During 3D Printing, Compatible with 1.75mm/2.85mm PLA ABS Material, Filament Dehydrator, Spool Holder
2 spool storage
40-50C range
Real-time monitoring
Silicone and Teflon seal
Pros
- Large storage fits 2 rolls of 1kg spools
- Real-time temperature and humidity monitoring
- Excellent sealing performance
- Compatible with 1.75mm and 2.85mm
Cons
- Max temperature only 50C
- Timer limited to 6-12 hours
The original Comgrow Filament Dryer Box is the workhorse of the budget category. With over 4,600 reviews and a 4.4-star rating, it has proven itself to thousands of users. The large inner chamber measures 9.29 x 6.49 x 9.13 inches, which comfortably fits two 1KG spools side by side.
Real-time monitoring of temperature and humidity is displayed on a built-in screen. This is one of the few budget dryers that shows both values simultaneously, which helps you understand what is happening inside the chamber without opening the lid and letting humid air in.
The adjustable temperature range runs from 40 to 50 degrees Celsius. This is adequate for PLA and PETG but falls short for TPU, nylon, and other materials that benefit from higher temperatures. If you primarily print with standard filaments, the range is sufficient.
The sealing performance is genuinely impressive for the price. The silicone cable sheath and Teflon tube create a tight seal around the filament exit point, which prevents moisture from creeping back in during use. This is a detail that some more expensive dryers overlook.
Best Fit for This Dryer
If you print mostly PLA and ABS in a moderate climate, this dryer provides excellent value. The dual-spool capacity is a real advantage at this price point, and the 71 percent 5-star review rate confirms consistent user satisfaction over thousands of purchases.
The inner dimensions accommodate spools up to standard 1KG size. The compatibility with both 1.75mm and 2.85mm filament diameters adds versatility if you run different printer setups.
Limitations to Consider
The 50-degree maximum temperature is the primary limitation. TPU and nylon benefit from temperatures in the 55-70 degree range, and this dryer simply cannot reach those levels. The 6-12 hour timer is also shorter than competitors that offer 24-hour or longer settings.
Additionally, this unit is not Prime eligible, which means longer shipping times compared to Prime-eligible alternatives. If you need a dryer quickly, consider the Creality Space Pi or SUNLU models instead.
8. Sovol SH01 – Reliable Workhorse with Power-Off Storage
Sovol Filament Dryer 2026, SH01 Filament Dehydrator 3D Printer Spool Holder
Built-in fan drying
2 spool capacity
40-50C range
Power-off storage mode
Pros
- Effective moisture removal with fan
- Real-time temp and humidity monitoring
- Power-off drying mode with silicone seal
- Holds 2 filament rolls or 1 wide roll
Cons
- Cannot reach 50C in rooms below 16C
- Not Prime eligible
The Sovol SH01 has earned its place as one of the most popular budget filament dryers on the market, with over 3,700 reviews. The built-in fan design creates even heating across the chamber, and the real-time monitoring display shows temperature and humidity inside the box at all times.
Temperature settings are fixed at 40, 45, and 50 degrees Celsius, with a timer range of 6 to 12 hours. This is simpler than the fully adjustable ranges on some competitors, but the three preset temperatures cover the most common PLA and PETG drying needs well.
The standout feature is the power-off drying mode. The silicone and PTFE seal creates an airtight environment that keeps filament dry for extended periods without electricity. This makes the SH01 function as both a dryer and a long-term storage container, similar to the Polymaker PolyDryer approach but at a lower price.
The large capacity accommodates two filament rolls with widths under 70mm or a single wide roll up to 150mm. This flexibility is handy if you use non-standard spool sizes or print with larger format filament.
Climate Sensitivity
The SH01 has a known limitation: it struggles to reach 50 degrees Celsius in rooms where ambient temperature drops below 16 degrees. If your workshop or print room gets cold, the heater cannot compensate enough to hit the top of its range. Users in warmer climates will not notice this issue.
For users in colder environments, consider placing the dryer in a warmer room or using one of the higher-powered options like the Creality Space Pi or Comgrow SH02, which have more robust heating elements.
Value Proposition
With a 1-year warranty and a 67 percent 5-star rate across thousands of reviews, the SH01 delivers reliable performance at a budget price. It does not have fancy features like touchscreens or filament presets, but it does the core job of drying filament consistently and thoroughly.
The Sovol earns a recommendation for users who want a straightforward, no-frills dryer that also doubles as sealed storage. The power-off mode is genuinely useful and sets this unit apart from other budget options.
How to Choose the Right Filament Dryer
Choosing the right filament dryer comes down to four key factors: the filament types you print with, how many spools you need to dry at once, your workspace constraints, and your budget. Understanding how these factors interact helps you avoid overspending on features you will not use.
Temperature Range by Filament Type
Different filaments require different drying temperatures, and matching your dryer to your materials is the most important decision you will make. Here is a practical reference based on our testing and manufacturer recommendations.
PLA dries best at 40-45 degrees Celsius for 4-6 hours. It is sensitive to heat, so avoid going above 50 degrees, which can soften and deform the filament. PETG needs 50-55 degrees for 4-6 hours. TPU and other flexible filaments want 40-50 degrees for longer sessions of 6-8 hours since they release moisture slowly.
Nylon and PA require 60-70 degrees for 8-12 hours and are the most demanding common material. ABS and ASA do well at 60-70 degrees for 4-6 hours. If you print with engineering materials like polycarbonate, you need a dryer that reaches at least 65 degrees, which rules out budget units with 50-degree limits.
Spool Capacity and Multi-Spool Needs
Single-spool dryers like the Creality Space Pi and SUNLU S2 are perfect if you run one printer and swap materials occasionally. They are smaller, cheaper, and heat faster because the chamber volume is compact.
Dual-spool dryers like the Comgrow SH02 and Sovol SH01 handle two spools simultaneously, which is ideal if you run two printers or frequently alternate between two materials. The SUNLU S4 with its four-spool capacity is the choice for print farms and multi-color setups.
Live-Printing Capability
Most dryers in this roundup support drying while printing, meaning you can feed filament directly from the dryer to your printer through PTFE tubing. This keeps filament warm and dry during long prints. Look for models with dedicated exit ports and good sealing around the tube entry point.
The SUNLU S4 takes this further with 8 exit holes for connecting multiple printers simultaneously. The Comgrow SH02 and Comgrow original both support dual extrusion through separate exit ports.
Energy Consumption and Noise
Filament dryers run for hours at a time, so energy use adds up. The 350W SUNLU S4 is the most powerful but also the most power-hungry. Budget dryers like the Sovol SH01 and SUNLU S1 Plus use significantly less electricity, making them cheaper to run for extended drying sessions.
Noise is another factor users on Reddit frequently mention. Units with multiple fans like the S4 produce more airflow noise, while single-fan budget dryers run quieter. If your printer sits in a living space, consider noise level alongside drying performance.
Frequently Asked Questions
Are 3D filament dryers worth it?
Yes, filament dryers are worth it if you print with hygroscopic materials like PETG, TPU, nylon, or even PLA in humid environments. Moisture in filament causes bubbling, stringing, poor layer adhesion, and failed prints. A dryer pays for itself by preventing wasted filament and failed prints.
What is the best entry-level filament dryer?
The SUNLU FilaDryer S1 Plus is the best entry-level filament dryer. It offers fan-assisted drying, a 2-inch LCD display, real-time humidity monitoring, and a 35-55C temperature range that covers PLA and PETG. It is affordable, reliable, and backed by over 1,100 reviews with a 4.4-star rating.
Do I really need a filament dryer for PLA?
PLA is less hygroscopic than PETG or nylon, so it can tolerate some humidity. However, in environments above 50 percent relative humidity, PLA absorbs enough moisture to cause stringing and brittle breaks. A dryer improves print quality for PLA, but it is less urgent than for PETG, TPU, or nylon.
Do I really need a filament dryer for PETG?
Yes, PETG is highly hygroscopic and absorbs moisture quickly. Wet PETG produces severe stringing, bubbles, and poor layer adhesion. If you print with PETG regularly, a filament dryer is strongly recommended. Most users see a dramatic improvement in print quality after drying PETG for 4-6 hours at 50-55C.
Final Recommendations
After testing these 8 dryers across weeks of printing, the Creality Space Pi SE Pro stands out as the best overall choice for most users. Its fast 15-minute heating, 360-degree PTC circulation, and wide filament compatibility make it versatile enough for everything from PLA to nylon. It earns our Editor’s Choice for single-spool performance.
For multi-spool users, the SUNLU FilaDryer S4 is unmatched. Drying four spools simultaneously with its 350W heater and triple-fan circulation transforms workflow for anyone running multiple printers or color setups. On a tight budget, the SUNLU S1 Plus delivers solid PLA and PETG drying at the lowest price point in this roundup.
No matter which model you choose, the best filament dryers for 3D printing share one trait: they eliminate the moisture problems that ruin prints. Pick the one that matches your filament types and spool capacity needs, and you will see immediate improvements in print quality and reliability in 2026.