SUNLU AMS Heater Reviewed: A Smarter, Cleaner, and Dryer 3D Printing Experience
July 10, 2025 – Francesco Messina, Tuttotek
SUNLU presents the AMS Heater, an innovative accessory that dries filaments directly within the Bambu Lab AMS system, improving print quality and streamlining workflows, especially for multi-material print setups.
Compatibility and Easy Installation
- Replaces the standard AMS lid (first generation only).
- Fast, tool-free installation with no permanent modifications or wiring required – a true plug-and-play system.
- The compact design (363 × 278 × 131 mm) minimizes footprint and keeps the workspace tidy.
Excellent Drying Performance
- Equipped with a 150W PTC heating element and two fans for uniform heat distribution.
- Reaches up to 70°C in approximately 20 minutes and maintains a constant temperature.
- Effectively removes moisture from PLA, PETG, TPU, and nylon, reducing stringing, bubbling, and extrusion errors.
Built-in Safety Features
- The PTC heater automatically regulates power near temperature limits.
- The thermostat cuts off power above 115°C to prevent overheating.
- The intelligent monitoring system stops operation in the event of malfunctions and only resumes once conditions are safe.
Practical Testing
- Over 60 hours of testing with PLA+, PETG, TPU, and nylon yielded perfect results – moisture-related issues were eliminated, and extrusion remained stable.
- Quiet operation (under 40 dB) makes it ideal for home and studio use.
- The touchscreen is responsive and user-friendly, offering both preset profiles and customizable settings.
Pros & Cons
| ✅ Pros | ❌ Cons |
| Dries filament effectively up to 70°C | No Wi-Fi or remote control functionality |
| Compact, easy-to-install design | Single heating zone limits material separation |
| Three-layer safety protection | No direct visibility of filament levels |
| Intuitive touchscreen with presets |
Conclusion
The SUNLU AMS Heater is a clever upgrade for users of Bambu Lab AMS Gen‑1 systems (such as X1C, P1S, and P1P). It enables on-the-fly filament drying, saves space, and improves efficiency. It is especially useful for users working with moisture-sensitive materials like nylon, PETG, and TPU. Thanks to its affordable price, it is an essential addition for ambitious makers looking to upgrade their 3D printing setup.
