Best Filament Dryers of 2026

Eighty-five degrees is the number that separates the Creality Space Pi X4 from most of this group. Each of its two chambers has its own 200W PTC heater and independent temperature control, so you can dry a spool of PAHT on one side and PLA on the other without compromising either. The box holds four spools, and it can dry and print from them at the same time.

We think the independent chambers are the real feature, not the headline temperature. You can run one chamber only when you have a single spool to dry, which saves power and keeps the other side available for storage. That flexibility is what makes the X4 a serious engineering-filament box rather than just a bigger single-zone dryer. The 85°C ceiling covers the high-temp materials that the S4 and Space Pi SE cannot reach, and the insulated chambers help hold that heat.

The X4 is at its best when your filament shelf includes materials that need 80°C-plus and you want to dry two types at once. For a PLA-and-PETG-only bench, the S4 is easier to justify; the X4's extra heat and chambers are capacity you may never use.

A four-spool dryer with two independently heated 85°C chambers is the expensive end of this category, which is what makes the Comgrow SH03 worth a look. It uses dual 200W PTC heaters, reaches 185°F (85°C), and holds up to four 1 kg spools across its two chambers. The automatic drying mode is meant to save energy by activating only when it is needed.

The SH03 also has a four-part protection and monitoring system, including outlet temperature monitoring and PTC protection. That matters because these boxes run for hours, often unattended, and heat is the part you cannot see. The 360° hot-air fan is there to even out the chamber, and the dual chambers let you keep one side available for storage while the other dries. Both chambers can run together or separately, so you can scale the box to the job.

We like the SH03 most for a workshop that wants high-temp capacity without paying premium money. The dual chambers and 85°C ceiling are the reason it earns a place beside the X4, and the automatic mode makes a long dry less wasteful. If you dry one spool at a time, it is more box than you need; for four-spool production, it earns its shelf space.

If you want to dry one spool without learning a menu system, the Creality Space Pi SE is the one we point to. It arrives assembled, and the knob-and-display controls are about as close to plug-and-play as this category gets. There is no touchscreen to fight, no preset menu to scroll through, and no reason to read a manual before your first dry.

The 45–65°C range is aimed at common materials, and the built-in fan circulates air around the chamber. We appreciate that Creality includes real-time humidity monitoring at this price, because it gives you a way to see whether the box is actually pulling moisture out. The single-spool chamber covers the usual 1 kg hobby roll, and the display is easy to read without a second glance.

The knob is the part we keep coming back to: one turn sets time, one sets temperature, and there is no touchscreen to fight when your hands are covered in filament dust. That simplicity is the whole argument for the SE. It is a single-spool box with a 65°C ceiling, so it is not the pick for ABS, PA, or PC; for PLA and PETG, it is the least fussy way into drying.

Nine filament presets on a two-spool box is more control than we expected from a compact dryer here. The Comgrow SH02 sets temperature with one key for PLA, TPU, PETG, ABS, ASA, PVA, PC, PA, and PP, and the 150W PTC heater covers a 40–70°C range. The touchscreen keeps the current settings visible without a manual.

We think the SH02 is a sensible compact choice for a desk with one or two printers. It holds two spools, has sealing rings on both covers, and uses a safety cutoff that drops the heater if the PTC climbs above 130°C and restarts it below 90°C. That is the kind of backup we want in a box that runs unattended, and it makes the SH02 easier to recommend than a bare-bones single-spool unit.

For two spools of the same material, the SH02 is simpler and easier to fit on a shelf than a four-spool box. The sealed design also means you can leave filament in it between prints, which is half the point of owning a dry box. It is a useful middle step between a single-spool budget box and a four-spool production dryer.

The 4.6-inch touchscreen is the first thing you notice on the SUNLU S2, and it is the reason this single-spool box stands out from the budget crowd. The screen shows temperature, time, humidity, and filament type together, so you can see the whole drying session without cycling through menus.

The 70°C ceiling gives it more headroom than the Creality Space Pi SE, and the one-key material settings are easy to read at a glance. We appreciate the dual heating sheets and 360° heating fan for even drying, which matters more on a single spool than on a big four-spool box. For PLA, PETG, and TPU, the S2 is an easy box to live with.

We recommend the S2 when the screen and the extra heat matter more to you than a few conveniences. Moisture can hang around inside during a long dry, and the practical fix is to crack the lid so the damp air has somewhere to go. That lid-cracking ritual is small, but it is the difference between trusting the humidity reading and ignoring it. The box can also feel tippy on a crowded desk, so give it a stable spot. If you want the simplest budget dryer, the Space Pi SE has fewer moving parts; if you want the display, the S2 is the one.