SUNLU AMS Lite Heater: Print and Dry Filament at the Same Time for Bambu Owners
SUNLU has launched the AMS Lite Heater, a filament dryer designed to integrate directly with Bambu Lab's AMS Lite system. Unlike standalone dryers that require you to remove filament from the printer, dry it separately, and then reload it, the AMS Lite Heater slots into the AMS Lite itself — letting you print and dry simultaneously.
The product launched July 20, 2026, and is compatible with the Bambu Lab A1, A1 Mini, and A2L printers that use the AMS Lite. It's priced at $119.99, positioning it as an accessory rather than a standalone appliance.
Why This Matters
Moisture is the silent killer of 3D print quality. Wet filament causes stringing, bubbling, weak layer adhesion, and surface defects — problems that are especially frustrating on high-end printers like Bambu Lab machines that otherwise produce excellent results. Nylon, PETG, TPU, and PC filaments are particularly hygroscopic, but even PLA absorbs enough moisture over time to cause issues in humid climates.
Traditional filament dryers work, but they're inconvenient. You have to remember to put the filament in the dryer hours before printing, then transfer it to the printer. If you're mid-print and notice stringing, it's too late — you either finish the print with defects or abort and start over.
The AMS Lite Heater solves this by drying the filament while it's in the AMS, actively feeding the printer. If your PETG starts stringing halfway through a 6-hour print, the heater can dry it on the fly without pausing.
Key Specs
| Spec | SUNLU AMS Lite Heater |
|---|---|
| Price | $119.99 |
| Compatible Printers | Bambu A1, A1 Mini, A2L (with AMS Lite) |
| Temperature Range | 35-70°C |
| Capacity | 4 spools (matches AMS Lite) |
| Power | USB-C powered |
| Noise Level | Whisper-quiet (claimed) |
| Launch Date | July 20, 2026 |
The Rest of SUNLU's Dryer Lineup
The AMS Lite Heater is the newest addition to a dryer lineup that already covers most use cases. The FilaDryer S4 ($116.99) handles four spools in a standalone unit, the S4 Pro adds dual-zone temperature control for different filament types, and the E2 ($249.99+) is a high-temperature dryer and annealer that goes up to 110°C+ for engineering materials like Nylon, PC, and carbon fiber blends.
SUNLU also released updated filament formulations in 2026, including PLA+ Silk 2.0, PP 2.0, and PETG 2.0 — all shown at TCT Asia and Formnext Shenzhen. The company is clearly positioning itself as a full-stack materials and accessories brand, not just a budget filament supplier.
Who Should Buy It
If you own a Bambu Lab A1 or A1 Mini with AMS Lite and you live in a humid climate, the AMS Lite Heater is probably worth the $120. It's the only dryer that works without disrupting your workflow, and for PETG or TPU users who deal with constant stringing, the print quality improvement alone justifies the cost.
If you print mostly PLA in a dry climate, or if you own a full-size AMS (not AMS Lite), this product isn't for you. The full-size AMS already has better environmental control, and PLA is less sensitive to moisture anyway.