Filament dryers
Sunlu Filament Dryer S4 Review
Four spools, stable heat, and print-through ports
About $116.99 (price checked Sep 2026)regular $139.99
Compare the Sunlu Filament Dryer S4 with 4 other filament dryers
Our verdict
Four spools, stable heat, and print-through ports. The S4 held target temperatures within a tight band and dried four mid-size spools without stacking gimmicks. Print-through PTFE ports mean you can dry while you print; something cheaper dehydrators make awkward. Overall 9.0/10.
Who should buy the Sunlu Filament Dryer S4
Multi-material desks that keep PETG, TPU, and nylon on deck at the same time.
- + Genuine four-spool capacity
- + Stable thermostat across long cycles
- + Print-while-drying ports
Who should skip it
- Bulky on a crowded bench
- App features are optional fluff
Sunlu Filament Dryer S4 vs Creality Space Pi Plus
The Sunlu Filament Dryer S4 scores 9.0/10 at about $116.99 (price checked Sep 2026). The Creality Space Pi Plus scores 8.6/10 at about $75 (price checked Sep 2026). Two spools in one chamber, without jumping to a four-bay box.
Specs
- Capacity
- 4 spools
- Temp range
- 35–70 °C
- Heater
- 350 W PTC
- Print-through
- Yes
Sunlu Filament Dryer S4 FAQ
- Who should buy the Sunlu Filament Dryer S4?
- Multi-material desks that keep PETG, TPU, and nylon on deck at the same time.
- What score did the Sunlu Filament Dryer S4 get?
- Overall 9.0/10. That score blends print quality, durability, value, ease of use, and compatibility.
- How much does the Sunlu Filament Dryer S4 cost?
- About $116.99 (price checked Sep 2026). Prices change often, so check the live price on Amazon.