Drying while printing against drying hotter
Which filament dryer: the SUNLU S1 Plus or the Creality Space Pi X4?
These two filament dryers answer different questions. The SUNLU S1 Plus is a single box that runs from 35 to 55 °C with a 1–99 hour timer and a fan, and lets the printer draw filament while it dries. The Creality Space Pi X4 holds four 1 kg or two 2 kg spools in two independently heated 200 W chambers up to 85 °C, and its listing describes neither a timer nor printing from the box.
| Compared on | S1 Plus single-spool dryer, 35 to 55 °C | Space Pi X4, four spools, two 200 W chambers |
|---|---|---|
| Maximum temperature | 55 °C, the top of an adjustable 35–55 °C range, third bullet | 85 °C in each of two independent 200 W chambers, second bullet |
| Spools held | Not published as a number; the box is described as suited to most 1 kg filament types | Four standard 1 kg spools or two large 2 kg spools, first bullet |
| Sizes accepted | Most 1 kg spools, third bullet; no dimensions given | 1 kg and 2 kg spools of 1.75 mm and 2.85 mm filament, first bullet |
| Humidity display | Not published — the LCD shows temperature and time | Not published as a display; the chamber is described as keeping humidity actively low |
| Airflow | Built-in fan for even heating, first bullet | Not published |
| Feed-through | Dries and prints at the same time, second bullet | Not published |
| Timer | 1 to 99 hours, third bullet | Not published |
A tick means one listing published something the other did not, or published a better figure. It does not mean the product is better, and the column is not a score out of anything: a maker who says less loses lines here without losing a comparison. The two verdicts below are where the page is settled.
The SUNLU S1 Plus suits one printer and one spool at a time, dried at up to 55 °C and fed straight to the printer, with a timer to stop the heat. Its ceiling is the lower of the two.
The Creality Space Pi X4 suits a shelf of spools, including 2 kg ones, dried in two separate chambers at up to 85 °C for materials whose makers ask for more heat. Its listing does not describe printing from the box.
The SUNLU S1 Plus listing says it dries and prints at the same time. The Creality Space Pi X4 listing does not describe a feed-through.
Only when the filament maker asks for it. The drying temperature belongs to the material and comes from its own data sheet; a higher ceiling on a filament dryer adds nothing for a material dried below 55 °C.
Neither listing describes a humidity display. The SUNLU screen shows temperature and time; the Creality chamber is described as keeping humidity low, without a reading.
35–55 °C · timer 1–99 h · built-in fan · prints while drying · 2 inch LCD showing temperature and time · under 10 dB stated
A single-box filament dryer with an adjustable 35 to 55 °C range, a 1 to 99 hour timer and a built-in fan, sized for common 1 kg spools and able to feed the printer while drying.
Best for: A PLA, PETG or TPU user who wants one spool kept dry while it prints.
≈ $32 / £25 / 40 €
Up to 85 °C · two independent 200 W chambers · four 1 kg or two 2 kg spools · silicone-sealed · touch interface with drying scenes · lit window
The dearest dryer here, holding four 1 kg or two 2 kg spools in two independently heated 200 W chambers up to 85 °C, with a silicone seal to keep filament dry between prints.
Best for: A heavy user storing and drying large 2 kg spools of engineering filaments between prints.
≈ 199 €
A price quoted in the text of a MakerVerdict page dates from the day that page was written; the live figure beside each product is fetched while you read and replaces it.
