10 Best Filament Dryers for Reliable 3D Printing in 2026

Moisture can turn otherwise good filament into stringy, brittle, inconsistent prints. The right filament dryer helps restore damp spools and keep moisture-sensitive materials ready to use.

This roundup compares 10 filament dryers from SUNLU, Comgrow, Sovol, and Creality, with options ranging from compact single-spool boxes to larger multi-spool systems.

Best 10 Filament Dryers Picks for 2026

Best Overall – SUNLU Filament Dryer S2

The SUNLU S2 is a versatile filament dryer for users who want to revive damp spools and keep filament dry while printing. Its broad temperature range, large display, and rotating spindle make it a practical choice for common materials such as PLA, PETG, ABS, and TPU.

Best For: Everyday 3D printing setups that need adjustable drying and in-use filament storage.

Pros:

• Adjustable temperature from 35–70°C and drying time from 0–99 hours
• Rotating spindle supports more even drying
• Works with 1.75mm, 2.85mm, and 3.00mm filament
• Large touchscreen and translucent lid simplify operation and monitoring

Cons:

• Single-spool capacity is less suitable for high-volume workflows
• Its maximum temperature may not suit every specialty filament

The S2 balances useful controls, compatibility, and straightforward operation. It is a strong all-purpose option for makers dealing with occasional moisture-related printing problems.

Best Budget Storage – Comgrow SH01 Filament Dryer Box

The Comgrow SH01 combines filament drying with sealed storage and can hold two 1kg spools. Its lower 40–50°C temperature range makes it suited to users who primarily print with materials such as PLA, ABS, and standard filament sizes.

Best For: Makers who want multi-spool storage, humidity monitoring, and drying during printing.

Pros:

• Stores up to two 1kg spools
• Provides real-time temperature and humidity monitoring
• Sealed outlet design helps maintain a dry environment
• Compatible with 1.75mm and 2.85mm filament

Cons:

• Temperature range is limited to 40–50°C
• Drying duration settings are limited to 6–12 hours
• Requires attention to the moisture outlet during drying

The SH01 emphasizes storage and moisture control rather than high-temperature drying. It is a sensible fit for standard materials and users who value a transparent, sealed two-spool box.

Best High-Capacity Option – SUNLU S4 Filament Dryer

The SUNLU S4 is a high-capacity filament dryer designed to dry up to four 1kg spools at once. With three circulation fans, a 350W PTC heater, eight filament outlets, and settings up to 70°C, it suits busy workspaces and multiple-printer setups.

Best For: Multi-spool workflows that need simultaneous drying and printing support.

Pros:

• Holds and dries up to four 1kg spools
• Three fans and 360-degree heating promote temperature consistency
• Eight filament exit holes support multiple printers and loading angles
• Supports materials including PLA, PETG, ABS, TPU, PA, PC, and Nylon

Cons:

• Large 4kg unit requires substantial workspace
• Higher capacity may be unnecessary for single-printer users
• Modification for 3kg rolls or shoe drying requires a DIY process

The S4 is built around throughput and flexibility. Its capacity and outlet configuration make it especially compelling for users running several spools or printers, provided they have room for its larger footprint.

Best Dual-Chamber Design – Comgrow SH03 Filament Dryer

The Comgrow SH03 is a four-spool filament dryer with two independently controlled chambers. Its adjustable 45–85°C range, automatic drying mode, active dehumidification, and monitoring protections give users detailed control when drying different materials simultaneously.

Best For: Advanced users who need independent control over multiple filament types.

Pros:

• Supports up to four 1kg spools in two independent chambers
• Separate temperature and power control for each chamber
• Automatic humidity-based drying mode helps reduce unnecessary operation
• Includes temperature, fan, and overheat monitoring protections

Cons:

• More complex controls may be excessive for basic drying needs
• Its four-spool capacity requires more workspace than a single-spool dryer

The SH03 stands out for control and automation rather than simplicity. Independent chambers and a higher maximum temperature make it a strong choice for users who regularly handle varied materials and larger drying workloads.

Best Multi-Spool Filament Dryer – SUNLU S4

If you run several printers or switch between colors frequently, this filament dryer is designed for high-volume workflows. The SUNLU S4 holds up to four 1 kg spools, heats to 70°C, and uses three fans for more even circulation.

Best For: Multi-printer setups, multi-color projects, and users who need to dry several spools at once.

Pros:

• Holds four 1 kg filament spools simultaneously.
• Supports common 1.75 mm, 2.85 mm, and 3.0 mm filament diameters.
• Offers heating up to 70°C with three circulation fans.
• Includes temperature monitoring, a backup thermal switch, and humidity control.

Cons:

• Its large footprint and 10.56-pound weight may be excessive for small workspaces.
• The 350W heater may use more power than smaller dryers.

The S4 is the most capable option here for users who value capacity and simultaneous drying. Choose it if your workflow involves multiple spools or printers; otherwise, its size may be more than you need.

Best Sealed Storage Filament Dryer – Sovol SH01

The Sovol SH01 combines active drying with sealed, power-off storage. This filament dryer provides real-time temperature and humidity readings, adjustable 40–50°C settings, and a built-in fan for more even heating.

Best For: Users who want a compact dryer that can also protect filament between printing sessions.

Pros:

• Stores two spools under 70 mm wide or one spool under 150 mm wide.
• Silicone and PTFE seals help protect filament from moisture and dirt when powered off.
• Supports up to four desiccant bags for additional moisture control.
• Displays internal temperature and humidity in real time.

Cons:

• Desiccant bags are not included.
• Temperature settings are limited to 40°C, 45°C, and 50°C.
• Heating may not reach 50°C in rooms below 16°C.

The SH01 stands out when storage matters as much as drying. Its lower temperature range is less flexible than the SUNLU S4, but the sealed design is useful for keeping filament protected after the drying cycle.

Best Everyday Filament Dryer – SUNLU S1 Plus

The SUNLU S1 Plus is a straightforward filament dryer for routine home 3D printing. Its fan helps remove excess moisture, while the LCD shows temperature, time, and humidity and allows temperature settings from 35°C to 55°C.

Best For: Single-spool users who want adjustable controls and drying while printing.

Pros:

• Fan-assisted drying helps address stringing, clogging, and poor adhesion linked to wet filament.
• 2-inch LCD displays temperature, time, and humidity.
• Adjustable temperature range of 35°C–55°C.
• Supports 1.75 mm, 2.85 mm, and 3.00 mm PLA, PETG, ABS, TPU, Nylon, and PA filament.

Cons:

• Its maximum capacity is limited to one spool within 210 × 89 mm.
• The 55°C maximum is lower than the SUNLU S4’s 70°C setting.

The S1 Plus is a practical middle ground for everyday printing. It offers useful monitoring and broad material compatibility without the larger capacity of the S4, making it a sensible choice for a single-printer setup.

Best Dual-Spool Value – Comgrow SH02 Filament Dryer

If you need filament dryers for two printers or multiple rolls, the Comgrow SH02 is a practical option. It holds two 1 kg spools, uses 360° circulating heat, and offers preset drying programs for nine filament types.

Best For: Makers who want two-spool drying, sealed storage, and straightforward preset controls.

Pros:

• Dries two 1 kg spools at the same time.
• 150W PTC heater reaches 50°C in about seven minutes and 70°C in about 25 minutes.
• Preset settings cover nine filament types, with a drying timer up to 98 hours.
• Sealing rings and safety protections help limit moisture exposure and overheating risk.

Cons:

• The maximum temperature is 70°C, which may not suit every specialized drying requirement.
• The two-spool design takes more space than a single-spool dryer.

The SH02 stands out among filament dryers for combining dual-spool capacity with fast PTC heating and extensive timer control. It is a strong fit when throughput and sealed storage matter more than compact size.

Best Compact Preset Control – Creality Space Pi Filament Dryer

The Creality Space Pi is a single-spool choice for users who want easy operation from their filament dryers. Its 110W PTC heater circulates hot air evenly, while the touch screen and material presets simplify temperature and time adjustments.

Best For: Single-spool users who want broad material presets, simple touch controls, and power-loss memory.

Pros:

• 360° hot-air circulation uses a 110W PTC heater for uniform drying.
• One-key settings support 12 filament types, including PLA-CF, PA-CF, and ASA.
• Temperature can be adjusted from 45°C to 70°C, with a timer from 0 to 48 hours.
• Power-off memory retains the previous material and temperature settings.

Cons:

• It is designed for one spool rather than simultaneous two-spool drying.
• The 48-hour timer is shorter than some competing models’ maximum drying times.

With its 3.7-inch touch screen and wide preset support, the Space Pi is an accessible option for routine filament maintenance. Its single-spool format also makes it a simpler choice for smaller workflows.

Best High-Capacity Performance – Creality Space Pi Plus

For higher-volume workflows, the Creality Space Pi Plus is one of the more capable filament dryers in this group. It accommodates two 1 kg rolls, provides double 360° PTC heating, and includes four filament outlets for feeding two printers.

Best For: Multi-printer users and makers drying two spools or higher-performance materials at once.

Pros:

• Holds two 1 kg spools and includes four filament holes with two PTFE pipes.
• Dual 160W PTC heating delivers 360° circulating hot air.
• Supports one-key settings for 12 materials, including nylon, PC, ASA, and carbon-fiber blends.
• Large 4-inch touch screen supports 45°C–70°C adjustment and Celsius/Fahrenheit switching.

Cons:

• The larger dual-spool design weighs 1.9 kg and requires more workspace.
• Its temperature range tops out at 70°C.

The Space Pi Plus is the most suitable pick here when capacity, faster double heating, and multi-printer feeding are priorities. Its broad material presets and lifetime technical support add convenience for demanding FDM setups.

How We Picked These Filament Dryers

We selected models across several practical categories: single- and multi-spool capacity, temperature control, heating design, storage capability, material compatibility, and ease of feeding filament directly to a printer. The lineup includes compact dryers for occasional use, larger units for active print farms, and sealed boxes designed to keep filament dry between prints.

Because specifications and versions can vary, check the current listing for exact temperature ranges, supported spool dimensions, included accessories, and power requirements before purchasing.

Quick Comparison

Best For	Look For	Typical Capacity
Small home setup	Compact design and simple controls	One spool
Frequent printing	Stable heating and sealed storage	One or two spools
Multiple materials	Adjustable temperature and longer drying cycles	Two spools
Print farms or high-volume users	Multi-spool capacity and independent control	Four spools

Key Buying Factors for Filament Dryers

Capacity and Spool Compatibility

Choose capacity based on how many materials you use at once, not just the number of printers you own. Confirm that the chamber fits your spool width and diameter, especially for large-format or specialty reels.

Temperature Range and Material Support

PLA generally needs gentler drying than nylon, TPU, or other moisture-sensitive materials. An adjustable thermostat gives you more flexibility, while preset programs can be easier for beginners. Always follow the filament manufacturer’s recommended drying temperature and time.

Heating and Airflow

PTC heating elements, circulating airflow, and designs intended to distribute heat evenly can help reduce hot and cold spots. A dryer should warm the spool consistently without exposing filament to excessive heat.

Drying Versus Storage

Some Filament Dryers are mainly active dehydrators; others also provide sealed storage and a feed-through path for printing. If your room is humid, storage features may be just as valuable as the heating cycle.

Controls, Noise, and Power

Look for clear displays, useful timers, easy-to-clean interiors, and a footprint that fits your workspace. For multi-spool units, also consider power draw, operating noise, and whether you can monitor each spool conveniently.

Who Should Buy Which Filament Dryers?

Choose a compact single-spool dryer if you print occasionally, have limited desk space, or mainly need to refresh one spool before a project. These models are typically simpler and more affordable.

Choose a two-spool dryer if you regularly switch between materials or want one spool drying while another remains ready to feed. This is a practical middle ground for most home makers.

Choose a four-spool dryer if you manage several printers, print frequently, or want to prepare multiple colors and materials in one cycle. Verify that the unit offers suitable control and airflow for your intended filaments.

For the best results, store opened spools in a sealed environment, dry them before demanding prints, and avoid exceeding the recommended temperature for the material.