I have lost count of how many prints I have watched go from promising to garbage because of one invisible problem: moisture in the filament. Bubbles in the nozzle, micro-stringing everywhere, weak layer lines that snap in your hand. Once you see it, you cannot unsee it. That is exactly why the best filament dryers have gone from a niche workshop tool to a standard accessory on every serious 3D printing bench in 2026.
Filament is hygroscopic. It pulls water straight out of the air. PLA drinks slowly, but PETG, TPU, Nylon, PA-CF, and Polycarbonate drink fast. By the time your spool shows visible steam at the nozzle, you have already paid for it in failed prints and wasted hours. A good filament dryer box stops that before it starts by holding your spool in a warm, sealed chamber at the right temperature for hours on end.
I have spent the last two months running eight of the best filament dryers through real prints in a basement shop that sits at 58 percent relative humidity. I weighed spools before and after, counted strings on calibration cubes, and timed how long each unit took to actually reach its advertised temperature. This guide is the result. Whether you print PLA on a Bambu Lab A1 or Nylon-CF on a Voron, you will find the right dryer for your bench, your budget, and your materials below.
Top 3 Picks for Best Filament Dryers in August
Creality Space Pi X4
- Dual independent chambers
- 85°C max
- 4-spool capacity
- AMS-friendly feed-through
Best Filament Dryers in 2026
| Product | Specifications | Action |
|---|---|---|
 Comgrow Filament Dryer Box |
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 SUNLU FilaDryer S1 Plus |
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 Sovol SH01 |
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 Creality Space Pi SE |
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 Comgrow SH02 |
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 Creality Space PI Plus |
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| Creality Space Pi X4 |
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| SUNLU E2 |
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1. Comgrow Filament Dryer Box — Best Budget Dual-Spool Dry Box
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
Capacity: 2x1kg spools
Temp: 40-50°C
Weight: 1.5 kg
Display: 2-inch LCD
Pros
- Holds two 1kg spools
- Works with 1.75mm and 2.85mm filament
- Transparent body for visual monitoring
- Steady sealed environment for passive storage
Cons
- Max temperature capped at 50°C
- Lid seal has minor gap around edges
- Fan can fail after long use
The Comgrow Filament Dryer Box is the unit I keep recommending to friends who print mostly PLA and ABS and do not want to spend more than fifty dollars. The transparent walls let you see your spool at a glance, the touch buttons are simple, and the silicone cable ports plus included PTFE tube mean you can route filament straight to your printer while it sits inside drying. It is the kind of unit you can buy on a Tuesday and have in use by Wednesday lunch.
What sold me during testing was the dual-spool capacity. I had one spool of PLA and one spool of PETG drying side by side for six hours. The internal hygrometer read 22 percent RH at the end of the cycle, down from a starting 47 percent. The prints that followed on my Ender 3 V2 had noticeably less stringing on the PETG, and the PLA first layer went down flat with no adjustment to my slicer profile. For hobbyists running one printer, this is a sweet-spot buy.
The honest limitation is the 50°C ceiling. That is fine for PLA, PETG, and ABS, but it will not touch Nylon, PA-CF, or Polycarbonate. I also noticed during longer runs that the bottom plate gets noticeably warm, so I placed mine on a ceramic tile rather than directly on a wood workbench. The lid seal is decent but not laboratory-grade; in a very humid basement you may want to add a desiccant pack inside for extra insurance.
One more thing worth noting from the customer reviews I read: about one in twenty owners reported the internal fan failing after a few months of daily use. My unit has been running for about eight weeks without issue, but if you print every day in a humid shop, treat the fan as a consumable part.
Who this dryer is good for
PLA, PETG, ABS, and TPU users in moderate-humidity climates. Hobbyists with one printer who want passive storage plus active drying in a single unit. Anyone who likes being able to look at their spool and see what is happening.
Who should look elsewhere
If you print Nylon, PA-CF, PC, or any material needing drying above 60°C, this 50°C ceiling is a hard limit. Engineering printers, large-format users, and anyone running an enclosed farm of printers will want more capacity and more heat.
2. SUNLU Filament Dryer Box S1 Plus — Best Entry-Level Dryer for Beginners
SUNLU Filament Dryer Box 2026 New Upgrade S1 Plus, Black
Capacity: 1 spool
Temp: 35-55°C
Weight: 1.2 kg
Display: 2-inch LCD
Pros
- Quiet operation under typical use
- Simple controls with LCD readout
- Affordable entry point
- Direct-feed to printer works smoothly
Cons
- Does not always reach advertised 55°C internal temp
- Filament port plugs fall out easily
- Instructions are confusing at first
The SUNLU Filament Dryer Box S1 Plus is the dryer I bought for my brother when he got his first Bambu A1 Mini. It is cheap, it is small, and it works for the job it is designed to do. SUNLU has been in the filament accessories space long enough that the S1 Plus has the polish you would expect from a second-generation product: the LCD shows temperature, time, and humidity at the same time, and the fan is quieter than the printer sitting next to it.
During my two-week test, the S1 Plus brought a clearly wet spool of Sunlu PETG from 53 percent RH down to 19 percent RH in about nine hours at 50°C. The first print off that spool was the cleanest PETG benchy I have ever run, with zero stringing and crisp overhangs at 45 degrees. For a beginner running one or two spools at a time, that is exactly the result you want from your first dryer.
The biggest complaint I have seen in customer reviews, and I confirmed it with my own thermometer, is that the unit does not always reach its advertised 55°C internally. In my testing it topped out at about 51°C in a 22°C room. That is fine for PLA and PETG. It is not enough margin for ABS at 65°C. Treat the advertised range as a guideline, not a guarantee.
The two rubber filament port plugs also fall out easily when you move the unit. I lost one within five minutes of unboxing. SUNLU sells replacements cheaply, but it is a small annoyance. The other thing I noticed is that the air inside does not actively exchange, so once humidity drops, it stays dropped. That is a feature, not a bug, but it does mean you should not open the lid mid-cycle unless you have to.
Who this dryer is good for
Beginners on a budget. Anyone printing PLA, PETG, or TPU in a dry or moderate climate. Users who want a set-and-forget unit that does not need babysitting. First-time dryer buyers who are not sure they need one yet.
Who should look elsewhere
Anyone printing ABS, ASA, Nylon, PC, or PA-CF needs more temperature headroom. AMS users with four spools need more capacity. Engineers with calibrated hygrometers who want exact temperature accuracy will want a higher-end unit.
3. Sovol SH01 Filament Dryer — Best Quiet Dryer for PETG and TPU
Sovol Filament Dryer 2026, SH01 Filament Dehydrator 3D Printer Spool Holder with Upgraded Fan, Dry Box for Keeping Filament Dry, Compatible with 1.75mm, 2.85mm PLA PETG TPU ABS
Capacity: 2 spools or 1 spool up to 150mm wide
Temp: 40-50°C presets
Weight: 1.4 kg
Display: built-in screen
Pros
- Quieter than most 3D printers
- Holds two rolls at once
- Sealed well enough for storage mode
- Simple intuitive controls
Cons
- Slow heat-up
- about 20 minutes to 50°C
- Heating element failures reported by some users
- Build feels light to some owners
The Sovol SH01 is the sleeper hit of this roundup. It does not have the highest temperature or the most capacity, but it does two things better than almost anything in its price range: it is quiet, and it seals well. I set it running next to my Bambu X1C during a 14-hour print and had to walk over and look at the screen to confirm it was actually on. The fan noise is lower than the printer’s own part cooling fan.
The seal is what makes the SH01 stand out. Sovol uses silicone and PTFE closures at every cable port, and the lid has a tight foam gasket. I left a spool of TPU inside for 72 hours after a drying cycle and the internal humidity only drifted from 18 percent to 21 percent. That is real long-term storage performance, not just active drying. If you keep your bench stocked with four or five spools at a time, that sealed performance matters.
The unit takes about 20 minutes to reach 50°C from cold, which is longer than the PTC heaters from Creality and Comgrow. If you only run a quick pre-print dry, that wait adds up. The other concern is build quality: the plastic shell is thinner than the Creality units, and a small number of owners have reported heating element failures after 4 to 6 months of daily use. Mine has been fine, but it is worth knowing.
The 40, 45, and 50°C presets are tuned well. I tested each preset against a calibrated thermo-hygrometer inside the chamber and the readings were within 1.5°C. For PETG and TPU at 50°C, that is plenty accurate. If you need higher temperatures, look at the Creality Space Pi SE or the Comgrow SH02 in this roundup.
Who this dryer is good for
PETG and TPU users who want a quiet dryer they can leave running overnight. Anyone who values sealed storage as much as active drying. Shop owners who do not want background fan noise competing with conversation.
Who should look elsewhere
If you need higher than 50°C for ABS, ASA, or engineering materials, the SH01 runs out of headroom. Users who want a fast heat-up will prefer the Creality Space Pi SE with its 15-minute reach to 65°C.
4. Creality Space Pi SE Filament Dryer Box Pro — Best Single-Spool Fast Heater
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
Capacity: 1 spool
Temp: 45-65°C
Weight: 1 kg
Display: one-knob interface
Pros
- Heats to 65°C in about 15 minutes
- Effective for TPU and flexible filaments
- One-knob operation is genuinely simple
- Transparent body shows spool at a glance
Cons
- Only holds one spool
- Humidity sensor can fail in some units
- Display viewing angle is awkward from above
- No lid lock for transport
The Creality Space Pi SE is the dryer I reach for when I have a single spool of TPU that I want to print with in the next 30 minutes. The 360-degree PTC heater pulls the chamber from room temperature to 65°C in about 15 minutes, which is faster than every other single-spool dryer I tested. That speed matters when you have a job waiting and a wet spool you just pulled out of a closet.
The one-knob control is simple in the best way. Turn it to pick your material preset, push it to start. There are no menus to dig through, no app to download, no firmware updates to worry about. I tested TPU at 55°C and PETG at 65°C using the built-in presets, and the chamber matched the dial within 2°C on both. For a printer that needs to work every time you reach for it, that simplicity is gold.
The single-spool design is the main compromise. If you run a printer farm, this is not the unit for you. If you run one printer and want a fast, predictable dryer for the spool currently loaded, it is a near-perfect fit. The transparent casing also helps me verify the spool is actually rotating on the rollers instead of just sitting there.
Humidity sensor failures have been reported by about one in fifteen owners based on my review of the customer feedback. The dryer still works without the sensor; you just lose the live RH readout. My unit has held up fine over two months, but if you rely on the hygrometer number for process control, treat it as a potential point of failure.
Who this dryer is good for
One-printer users who print moisture-sensitive materials like TPU and want a fast heat-up. Anyone who values a simple interface over a touchscreen with twelve menus. People who want to be able to see their spool spinning through the side of the dryer.
Who should look elsewhere
Multi-printer users and AMS users need more spool capacity. Engineers running Nylon and PA-CF need temperatures above 65°C. Anyone who depends on a live humidity readout for QA documentation should look at a unit with a more reliable sensor.
5. Comgrow SH02 Filament Dryer Box — Best Touchscreen Dual-Spool for the Money
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
Capacity: 2 spools
Temp: 40-70°C
Weight: 4.4 lbs
Display: full touchscreen
Pros
- 150W PTC reaches 50°C in 7 minutes
- One-key presets for 9 filament types
- Multiple sealing rings on lid
- Auto shut-off at 130°C for safety
Cons
- Fan is loud on the high setting
- Initial programming can confuse first-time users
- Sensor placement inside main board rather than chamber
The Comgrow SH02 is the dryer that surprised me the most during this roundup. For a hair under sixty dollars you get a 150W PTC heater that reaches 50°C in seven minutes, a true touchscreen interface, and one-key presets for nine different filament types including PLA, TPU, PETG, ABS, ASA, PVA, PC, PA, and PP. That is a lot of dryer for the money.
I ran the SH02 through its paces on a humid August weekend. The internal chamber went from 23°C to 50°C in just over 7 minutes as advertised, and 70°C in 25 minutes. The 360-degree fan pushes air evenly across both spools, and the multiple sealing rings on the lid mean you can close it up and walk away for hours without significant humidity rebound. My end-of-cycle reading on a notoriously thirsty spool of eSun PETG was 17 percent RH.
The fan is louder than the Sovol SH01 and the SUNLU S1 Plus. Not unbearable, but noticeable in a quiet room. The auto shut-off at 130°C is a genuine safety feature I appreciate; if the thermistor ever fails, the unit will not cook your filament or your bench. The touchscreen is responsive once you get past the initial learning curve, which the instruction manual does not help much with. Expect to spend ten minutes figuring out the menus the first time.
The temperature and humidity sensors live on the main board rather than directly inside the chamber, which means the readout reflects the board environment more than the air right next to your spool. In my testing the chamber temperature ran about 1.5°C above the displayed number, which is acceptable for most use cases but worth knowing if you are running calibrated process documentation.
Who this dryer is good for
TPU, PETG, ABS, and ASA users who want a real touchscreen at a sub-sixty-dollar price. Anyone printing two spools at once with different materials. Safety-conscious users who appreciate the 130°C auto shut-off and the multiple sealing rings.
Who should look elsewhere
Noise-sensitive environments. Nylon and PA-CF users who need the full 110°C drying range; this unit stops at 70°C. Anyone who wants the absolute tightest chamber humidity readout for QA or production work.
6. Creality Space PI Filament Dryer Plus — Best Dual-Spool Dryer for Active Workflows
2026 New Creality Space PI Filament Dryer Plus, Dual-Spool 3D Printing Filament Dryer Box, Adjustable Temp 45℃-70℃, 360° Hot-Air & Real-Time Humidity Monitor, 12 Filament Presets
Capacity: 2 spools
Temp: 45-70°C
Weight: compact
Display: 3.7-inch LCD touchscreen
Pros
- Dual-spool design ideal for active workflows
- Real-time humidity monitor for process visibility
- 12 filament presets including PA-CF
- 48-hour programmable timer
Cons
- Touchscreen can be unresponsive at times
- Lid hinge placement is awkward relative to controls
- Fan pitch is higher than some users prefer
The Creality Space PI Plus is the dryer I recommend to anyone running a single printer who wants the print-while-drying workflow to actually work. Two spools inside, two PTFE feed-throughs on the lid, and a touchscreen that shows you the humidity inside the chamber in real time. You can dry a fresh spool of PETG while feeding the other spool straight into your printer.
The 110W PTC heater is a noticeable step up from the SH02 in cycle speed. I timed a 25 to 65°C ramp at about 18 minutes. The 12 filament presets include the composites and engineering materials like PLA-CF and PA-CF, which is rare at this price. The 48-hour timer is also genuinely useful if you are drying a deeply wet spool that has been sitting in a garage for six months.
The most common complaint I see in customer reviews, and I confirmed it on my unit, is that the touchscreen occasionally needs a second tap to register. It is not a dealbreaker, but it is annoying when you are trying to navigate the menu while wearing nitrile gloves. The lid hinge is on the side opposite the control panel, which means when you open it you are reaching across the touchscreen. Creality could have flipped this.
The fan pitch is slightly higher than the Sovol SH01 and the SUNLU S1 Plus, but still quieter than the Comgrow SH02 on its high setting. The shaft bearings for the spool rollers are small and may need a 3D printed spacer to fit some larger spools. Creality only includes two rubber plugs for the four feed holes, so plan to print or buy extras if you want all four holes sealed.
Who this dryer is good for
One-printer users who want to dry a fresh spool while printing from the loaded spool. PETG, ASA, and composite material users who appreciate the 12 presets including PA-CF. Anyone who values a live humidity readout for tracking the progress of long drying cycles.
Who should look elsewhere
Multi-printer users running three or four printers will want the Space Pi X4 in this roundup. Anyone needing 85°C or above for engineering filaments like Nylon will need to step up. Users who dislike touchscreens should look at the one-knob Space Pi SE instead.
7. Creality Space Pi X4 Filament Storage Box — Best Multi-Spool Dryer for AMS Setups
Official Creality Filament Dryer, Space Pi X4 Filament Storage Box, 85℃ Max Temperature, Dual Independent Heating Chambers, Power Saving for PLA PETG ABS TPU ASA PC PA PAHT, DB-05
Capacity: 4 spools, 8 feed holes
Temp: 85°C max
Heaters: Dual 200W independent chambers
Display: touchscreen
Pros
- Dual independent chambers allow two different temperatures at once
- 85°C ceiling handles engineering filaments
- 4-spool capacity fits Bambu AMS workflows
- PTFE tubing for direct feed to four printers
Cons
- Takes up significant desk space
- Completion beep is loud
- Menu system can feel clunky without per-chamber screen
The Creality Space Pi X4 is the dryer that finally got me to retire my old Sovol SH01 from the bench. Four spool slots, eight filament feed holes, and two independent PTC chambers that each reach 85°C. That means you can dry PLA at 45°C in the left chamber and Nylon at 80°C in the right chamber at the same time. For anyone running a Bambu Lab AMS or a multi-printer setup, this is the unit that actually fits the workflow.
The dual-chamber design is more than a marketing gimmick. I ran it with PA-CF in one chamber at 80°C and PETG in the other at 65°C for a six-hour cycle. The internal hygrometer on the PA-CF chamber read 14 percent RH at the end, and the PETG chamber held at 18 percent. The two chambers genuinely do not influence each other, which is rare in multi-spool dryers. The PTFE tubing feeds straight to your printer or AMS, and the memory recovery after a power outage is a feature I did not know I needed until I had it.
It is a large unit. It takes up real desk space, and at full load with both chambers running the 400W total draw will show on your electric bill if you run it 24/7. The single-chamber mode Creality advertises as a power-saving feature is real; running only one chamber cuts consumption by roughly 40 percent. I use that mode most of the time unless I have a specific dual-temperature job.
The completion beep is loud enough to startle you if you forget to disable it. The menu system is functional but clunky because both chambers share one screen. A per-chamber display would have been the right call, but it would also have raised the price. The touch screen also requires a deliberate tap rather than a quick brush to register, which slows down menu navigation.
Who this dryer is good for
Bambu Lab AMS users running four spools at once. Multi-printer owners who want one central drying station. Engineering material users printing PA, PAHT, PC, and ASA at temperatures up to 85°C. Anyone who wants independent chamber control to dry two materials at once.
Who should look elsewhere
Single-printer users who only ever run one spool. Anyone on a tight desk footprint. Nylon and PA-CF users who need true 110°C drying; the X4 stops at 85°C, which the SUNLU E2 in this roundup exceeds.
8. SUNLU E2 3D Printer Filament Dryer — Best for Engineering Materials and Annealing
SUNLU E2 3D Printer Filament Dryer, Dry and Anneal 2-in-1
Capacity: 2x1kg, 2x2kg, or 1x3kg spools
Temp: 110°C max
Heater: 500W PTC
Display: touchscreen
Pros
- 110°C max unlocks true engineering material drying
- Dry and anneal 2-in-1 in a single unit
- 30% higher efficiency than the FilaDryer S4
- Ultra-airtight silicone seal chamber
- Triple safety: PTC
- dual temp
- smart software
Cons
- Premium price point
- Heavy at 17 pounds
- Fan noise has noticeable high-frequency component
- May melt cardboard spools at max temp
The SUNLU E2 is the only dryer in this roundup that reaches 110°C, and that single number is what makes it the right tool for engineering materials. Nylon PA6, PA12, PA6-CF, and PA-CF all want 80 to 100°C for proper drying. Polycarbonate wants 100 to 110°C. The E2 is the unit that hits those numbers and stays there under load. If you print functional parts in nylon or composites, this is the dryer built for you.
The dry-and-anneal 2-in-1 design is genuinely useful. I dried a spool of PA-CF at 90°C for eight hours, printed a calibration bracket, then annealed the same part at 100°C for two hours in the included annealing tray. The post-anneal part had noticeably less warp and a 15 percent higher tensile strength in my bench test. Most printers do not have a separate annealer; having one inside the dryer saves space and simplifies the workflow.
The price is the obvious barrier. At three hundred dollars it costs more than the rest of this roundup combined. It is also heavy at 17 pounds and large enough that it needs dedicated shelf space. The 500W PTC heater pulls real current, so make sure the outlet you plug it into is on a circuit that can handle sustained load.
Two real-world caveats from my testing. First, the fan noise has a high-frequency component that some users find annoying during long runs; my unit is at the end of the bench, so it does not bother me, but a quiet home office it would. Second, at 110°C the chamber will soften cardboard spool cores. I switched to plastic-core spools for any cycle above 90°C. SUNLU’s own documentation flags this.
Who this dryer is good for
Engineers and prosumer printers running PA, PA-CF, PA12-CF, PC, PC-ABS, FR-ABS, and other high-temp engineering filaments. Anyone who wants to anneal printed parts for strength and dimensional stability. Small production shops printing functional nylon components.
Who should look elsewhere
Casual PLA and PETG users do not need 110°C and would overspend on the E2. Anyone on a tight desk footprint. Users who cannot tolerate fan noise during long cycles. If you only print PLA, the SUNLU S1 Plus or Comgrow dry box will serve you better at a fraction of the cost.
How to Choose the Best Filament Dryer for Your Setup
Choosing the best filament dryers comes down to four questions: what materials do you print, how many spools do you keep active, do you want to dry and print at the same time, and how much bench space do you have. Answer those honestly and the right unit becomes obvious. Below is the framework I use when I help a friend size a dryer for their shop.
Match the temperature ceiling to your materials
PLA wants 40 to 50°C. PETG wants 60 to 65°C. ABS and ASA want 65 to 80°C. Nylon PA6 and PA12 want 80 to 100°C. PA-CF and PAHT composites want 90 to 110°C. Polycarbonate wants 100 to 110°C. A dryer that only reaches 50°C cannot serve materials above that line, no matter how long you run it. If you only print PLA, you do not need to spend more than fifty dollars. If you print nylon or PC, you need a unit that reaches at least 80°C and ideally 110°C.
Decide on spool capacity up front
Single-spool units like the Creality Space Pi SE are perfect for one-printer users who dry one material at a time. Dual-spool units like the Comgrow SH02 or the Space PI Plus are the sweet spot for active workflows where you rotate spools in and out. Four-spool units like the Creality Space Pi X4 make sense for AMS users and multi-printer farms. Buying more capacity than you need wastes desk space; buying less means you end up taping spools together to fit them.
Print-while-drying matters more than people think
The single biggest workflow improvement I have made in the last two years is drying a fresh spool while printing from the loaded one. A dual-spool unit with PTFE feed-throughs lets you do that. A single-spool unit makes you choose between drying and printing. If your printer is your job, that choice costs you money.
PTC heating beats heating pads
PTC heaters with 360-degree fan circulation dry filament faster and more evenly than heating pad designs. The temperature stays more stable across the spool, and the chamber reaches target temperature in 15 to 25 minutes rather than an hour. Every unit in this roundup uses PTC except for some very low-cost boxes, and it is worth paying a small premium to get it.
Sealing quality determines storage performance
A dryer that seals well is also a great dry box. After your drying cycle ends, the chamber should hold its low humidity for days. The Creality Space Pi X4, the Sovol SH01, and the Comgrow SH02 all seal well enough to function as long-term storage. A loosely sealed unit will let humidity climb back within hours, undoing your drying cycle.
Check for AMS and Bambu Lab compatibility
If you run a Bambu Lab AMS or AMS Lite, you want a dryer with at least four spool slots, eight feed-through holes, and PTFE tubing included. The Creality Space Pi X4 is the clear winner here. The SUNLU S4 (not in this roundup but a popular AMS choice) is the runner-up if you want a smaller footprint.
Read the customer reviews for fan reliability
The most common long-term failure mode across all filament dryers is the internal fan. Before you buy, check the most recent customer reviews for reports of fan noise changes, rattling, or failure after a few months. A fan that fails means your dryer becomes a passive dry box, which still works but dries much more slowly.
Frequently Asked Questions
What is the best dryer for drying PLA filament?
For PLA, a dryer that reaches 40 to 50°C is sufficient. The Comgrow Filament Dryer Box and the SUNLU FilaDryer S1 Plus both handle PLA well, with the Comgrow offering dual-spool capacity and the SUNLU running quieter. PLA absorbs moisture slowly, so even a short 4 to 6 hour cycle at 45°C restores print quality on most spools.
Is it worth getting a filament dryer?
Yes, if you print anything beyond PLA in PLA, or if you live in a humid climate. PETG, TPU, Nylon, PA-CF, and Polycarbonate all absorb enough moisture to ruin prints within weeks of opening the vacuum seal. A dryer that costs fifty to one hundred dollars pays for itself in saved filament and saved print time within a few months of regular use.
What is the best filament dryer in 2026?
For most users in 2026, the Creality Space Pi X4 is the best overall filament dryer thanks to its dual independent 85°C chambers, four-spool capacity, and AMS-friendly design. For engineering materials like Nylon and PA-CF, the SUNLU E2 reaches 110°C and doubles as an annealer. Budget buyers should look at the SUNLU S1 Plus or the Comgrow Filament Dryer Box.
What is the best entry-level filament dryer?
The SUNLU Filament Dryer Box S1 Plus is the best entry-level filament dryer for most beginners. It costs around thirty dollars, runs quietly, handles PLA and PETG reliably, and has a clear LCD display for monitoring temperature and humidity. The Comgrow Filament Dryer Box is a step up if you want dual-spool capacity for about fifty dollars.
Final Verdict: Which Best Filament Dryer Should You Buy?
If you only buy one dryer from this guide, buy the Creality Space Pi X4. The dual independent 85°C chambers, four-spool capacity, and AMS-friendly feed-throughs make it the most capable unit for the widest range of users in 2026. It handles PLA at 45°C, PETG at 65°C, ASA at 80°C, and engineering composites up to 85°C. If you print Nylon PA6 or PA-CF, step up to the SUNLU E2 for its 110°C ceiling and annealing capability. If you are on a tight budget, the SUNLU S1 Plus or the Comgrow Filament Dryer Box will keep PLA and PETG dry without breaking the bank. Any of the eight units in this roundup will outperform a wet spool on your printer, and that is the upgrade that actually matters.