SUNLU AMS Heater replacement heated lid for Bambu Lab AMS Gen 1 — 70°C filament drying, non‑destructive install

SUNLU AMS Heater is a replacement heated lid for the Bambu Lab AMS Gen 1 that allows drying and printing filaments at the same time.

The SUNLU AMS Heater converts your existing Bambu Lab AMS (Gen 1) lid into an active heating element so the Automatic Material System can keep filament dry while the printer pulls filament for uninterrupted jobs. It installs without altering the AMS chassis, preserves all Gen 1 functionality, and is designed to focus warm air at the filament area while protecting the AMS feed motor from excess heat. This accessory is intended for the first-generation AMS only and does not include the AMS unit itself.

How does the SUNLU AMS Heater let me print and dry simultaneously?

The heater replaces the AMS Gen 1 lid and introduces controlled warmth into the filament chamber, accelerating moisture removal while spools feed directly to the printer. By maintaining a warm, stable environment around the filament path, it reduces the chance of moisture-related extrusion defects during long or humid prints.

• Directly replaces the original AMS Gen 1 lid — non-destructive install
• Heats the filament area to about 70°C (158°F)
• Reaches target temperature in roughly 20 minutes
• Works while the AMS continues feeding filament to the printer

Is the SUNLU AMS Heater safe to use with my AMS unit?

The SUNLU design directs airflow so heat concentrates where the filament sits and stays away from sensitive moving parts like the AMS feed motor. Built-in safety and reliable aerodynamics reduce overheating risk, and the heater maintains compatibility with existing Gen 1 AMS functions.

• Airflow pattern guides heat toward filament, not motor
• Non-invasive swap keeps the AMS structure intact
• Compatible with all AMS Gen 1 operational features
• Includes no additional electronics that modify AMS firmware

How quick and effective is the heater for drying common filaments?

The heater reaches about 70°C in around 20 minutes, a temperature range that speeds moisture removal for popular filament types like PLA, PETG, and many nylons. While drying times vary by filament and humidity, the AMS Heater provides a fast baseline temperature to keep filament in printing-ready condition.

• Target temperature: 70°C (158°F)
• Warm-up time: approximately 20 minutes
• Suitable for most standard printing filaments
• Helps reduce visible moisture-related printing defects

What does installation involve and will it affect my AMS warranty?

Installation is a three-step process that replaces the original AMS Gen 1 lid only, so it’s non-destructive and reversible if you need the original part back. Because it does not modify internal AMS components or firmware, it preserves the unit’s mechanical integrity; check your device warranty terms for specifics.

• Three-step swap — remove original lid, place SUNLU heater lid, secure
• No internal AMS disassembly required
• Does not include the AMS main unit; lid-only accessory
• Preserves Gen 1 AMS functions and feed mechanics

Who this is for: The SUNLU AMS Heater is aimed at owners of Bambu Lab AMS Gen 1 who want dryer filament during prints without building a separate drying workflow. It’s ideal for hobbyists and pros printing long jobs, multi-material prints, or working in humid environments who want a simple, reversible upgrade to maintain filament quality. If you have AMS Gen 2, this product is not compatible — confirm your AMS generation before purchasing.