7 models in this file
SUNLU AMS Heater Guide: Dry Filament While You Print
As Amazon Associates, we earn from qualifying purchases. This means we may receive a small commission at no extra cost to you if you click through and make a purchase.
SUNLU has established a solid reputation among 3D printing enthusiasts for creating practical filament care solutions, drying units, and material-handling accessories. Makers running Bambu Lab setups frequently encounter moisture issues when storing spools in unconditioned garages or humid regions, making a dedicated sunlu heater ams system an effective way to keep hygroscopic materials like PETG, TPU, and nylon printing smoothly without pausing work.
While each unit in this guide is engineered around active heat circulation to dry filament while printing, they differ in sensor sophistication, bundled components, enclosure top styling, and packaging partnerships across different distributor kits.
No. 1 of 7 · Yoopai
SUNLU AMS Heaters Compared
4.5 Amazon buyer average
Best for: High-volume print farms needing external spool pre-drying
What the listing says
- Add the Missing Drying Function to Your AMS Designed specifically for the Bambu Lab AMS (1st Generation), The SUNLU AMS Heater transforms your AMS…
- Rapid & Uniform Heating, Up to 70°C Equipped with high-efficiency PTC heating elements, it reaches 70°C in just 20 minutes.
- 【Smart Humidity Monitoring & Safety Protection】Built-in high-precision humidity sensor displays chamber humidity in real time.
- Simple Installation, Perfect Fit for AMS Compatible with Bambu AMS's existing sealing strips and moisture-proof structure.
- Reduce Failure Rates, Boost Print Success Moisture-prone filaments often cause nozzle bursts, weak layer adhesion, or rough surfaces.
Pros
- Includes external S4 filament dryer
- Expands workshop drying volume
- Integrated active heating
Cons
- Requires extra workspace footprint
- Listing provides minimal hardware specs
Best for: Makers needing programmable relative humidity control modes
Pros
- Dual Standard and rH modes
- Clear window for spool monitoring
- Uses existing moisture-proof seals
Cons
- Slightly heavier lid assembly
- Gen 1 material systems only
Best for: Workshops stacking multiple material units vertically
Pros
- Flat top allows unit stacking
- Triple-safe heating with thermal cutoff
- Simple three-step cover swap
Cons
- No transparent spool window
- Limited to Gen 1 units
Best for: Makers wanting full factory installation hardware included
Pros
- Reaches 70°C in 20 minutes
- Includes hinges, screws, and hex tool
- Isolated feeder motor airflow
Cons
- Lacks automated humidity display
- Incompatible with AMS Gen 2
| Model | Target Machine | Heating Specs | Automation & Sensor Features | Reported Weight |
|---|---|---|---|---|
| SUNLU AMS Heater (B0FLP97HMW) | Bambu Lab AMS Gen 1 | Up to 70°C in 20 minutes | Isolated motor air duct design | 1.7 kg |
| SUNLU AMS Heater (B0GGZ5HNP6) | Bambu Lab AMS Gen 1 | Up to 70°C in 20 minutes | PTC heater, metal fan, thermal cutoff | 1.7 kg |
| SUNLU Filament Dryer (B0FQVHHBQV) | Bambu Lab AMS 1.0 | Up to 70°C in 20 minutes | Humidity sensor auto start/stop | 3.7 pounds |
| Sunlu AMS Heater Upgrade for Bambu (B0FNDFPJH7) | Bambu Lab AMS Gen 1 | Up to 70°C in 20 minutes | Standard 6h timer and custom rH mode | 3.75 pounds |
| SainSmart SUNLU AMS Heater Upgrade (B0FWJBDX6Z) | Bambu Lab AMS Gen 1 | Up to 70°C in 20 minutes | Standard mode and custom rH (25–50%) | 5.55 pounds |
| SUNLU AMS Heater (B0GSYXBD98) | Bambu Lab AMS compatible | Integrated Heater | Not listed | Not listed |
No. 2 of 7 · Sunlu
SUNLU AMS Heater for Factory Direct Hardware Upgrades
4.5 Amazon buyer average
What the listing says
- Simultaneous Printing & Drying SUNLU AMS Heater can upgrade the bambu lab AMS (Gen 1) that enables printing and drying of filament simultaneously.
- Easy & Safe Installation Upgrade your Bambu AMS with three steps, it only replaces the original lid, making the installation…
- Safe & Reliable Design Features a unique airflow design that directs heat to the filament area, ensuring safety for the…
- High Compatibility Supports all AMS Gen 1 functions.
- Fast Heating AMS Heater reaches 70°C(158°F) in just 20 minutes, quickly drying most common 3D printer filaments
The SUNLU AMS Heater serves as an active drying chamber upgrade specifically engineered for the Bambu Lab AMS Gen 1. By replacing the original enclosure cover, it converts standard spool storage into a fast-acting heating environment without requiring destructive cuts or drilling on your primary unit. The heating assembly reaches 70°C within 20 minutes, allowing users to dehydrate production spools like PETG or standard PLA blends while continuing active printing workflows.
Thermal management is focused strictly on the filament path. The internal chamber uses a specialized airflow duct that isolates heat to the upper spool zone, protecting the lower AMS feeding motor from excess warmth. This model ships with a dedicated mounting kit containing a hexagonal screwdriver, eight hexagonal screws, four replacement hinges, and an external power cable. It fits makers who want complete installation hardware included straight out of the box.
Because it preserves all standard Gen 1 multi-material operations across four spools, it suits operators working in moderately humid workshops who want minimal downtime. However, the listing explicitly notes that it is not compatible with second-generation AMS designs, and the base AMS feeder unit must be supplied separately.
No. 3 of 7 · Sunlu
SUNLU AMS Heater for Stackable Multi-Unit Racks
4.4 Amazon buyer average
What the listing says
- Dry While You Print SUNLU AMS Heater enables simultaneous drying and printing.
- High Compatibility AMS Heater is compatible with AMS Gen 1, preserving multi-color printing & sealed storage.
- Efficient Heating AMS heater reaches 70°C in just 20 mins, effectively drying most common filaments with its rapid,…
- Unique Air Duct Design To protect the AMS feeding motor from high temperatures, the unique air duct design confines heat…
- Easy Installation Upgrade in just 3 steps. Simply swap the original top cover as a drop-in replacement.
- Triple-Safe Heating Our system integrates a PTC heater, metal-roller fan, a secondary thermal cutoff, and smart software controls.
Finished in an inky black shell, this version of the SUNLU AMS Heater is designed for makers who prioritize tidy vertical setups and tight footprint constraints. The shell features a flat top profile, enabling users to stack multiple automated material systems or dry boxes securely on top of each other without blocking ventilation channels. Like its counterpart, it handles four filament spools at once and supports active feeding during print cycles.
Safety engineering on this model uses a multi-layered defense system. It pairs a positive temperature coefficient heating element with a metal-roller blower, a secondary thermal cutoff fuse, and smart firmware safeguards. This setup delivers rapid heat up to 70°C within 20 minutes while protecting sensitive filaments such as a sunlu filament kit from hot spots.
This unit is well matched for busy print farms and desktop setups where horizontal workspace is limited. Makers needing an unobtrusive, stack-friendly design will appreciate the drop-in three-step swap, though it gives way to sensor-driven models if you require automated humidity-based shutoffs.
No. 4 of 7 · Kunphy
SUNLU Filament Dryer for Rapid Tool-Free Installation
4.3 Amazon buyer average
Best for: Hobbyists seeking quick tool-free lid installation
What the listing says
- Eliminate Wet Filament Problems Upgrade your Bambu Lab AMS (Gen 1) to actively dry filament while you print.
- Heat to 70°C in 20 Minutes Our fast PTC heating and dual-airflow system quickly reaches the perfect drying temperature for PLA, PETG,…
- Smart & Fully Automatic Set it and forget it. The humidity sensor auto-starts when needed and stops when your filament is dry.
- 2-Minute, No-Tool Installation Just swap the original AMS top cover.
- Print Better, Save Filament Get smoother prints, stronger layer adhesion, and say goodbye to stringing and bubbles.
Pros
- Automatic humidity start and stop
- Fast two-minute cover swap
- Even dual-airflow circulation
Cons
- No custom relative humidity setting
- Base AMS unit not included
Marketed under the Kunphy partner brand, the SUNLU Filament Dryer is built from durable acrylonitrile butadiene styrene and targets quick, tool-free installation. Designed to drop directly into Bambu Lab AMS 1.0 units, it swaps onto the lower housing in approximately two minutes. It retains complete four-roll automated feeding capability while circulating heated air via dual internal channels.
The standout feature of this edition is its automatic operational profile. An integrated humidity sensor actively monitors relative humidity inside the spool compartment, triggering heating cycles when moisture climbs and shutting down once the air achieves target dryness. This automatic cycling reduces the guesswork involved in maintaining hygroscopic materials like nylon or specialty rolls like sunlu marble pla.
Weighing approximately 3.7 pounds, this unit is well suited for makers who want a hands-off, set-it-and-forget-it approach to filament preservation. It yields to models with physical adjustment screens if you require exact digital relative-humidity targeting on the lid itself.
No. 5 of 7 · Sain Smart
Sunlu AMS Heater Upgrade for Bambu with Smart Humidity Modes
4.8 Amazon buyer average
What the listing says
- Add Active Drying to Your AMS Upgrade your Bambu Lab AMS Gen 1 into an active filament drying chamber during printing.
- Fast & Even Heating up to 70°C High-efficiency PTC heating reaches 70°C in 20 minutes.
- Smart Humidity & Safety Control Real-time humidity monitoring with Standard (auto 6h) or rH Mode (25–50% customizable).
- Quick Installation & Perfect Fit Installations in 2 minutes with existing AMS sealing strips.
- Improve Print Success & Reduce Waste Prevents nozzle clogs, weak layer adhesion, and rough surfaces caused by moisture.
Distributed by YOOPAI, the Sunlu AMS Heater Upgrade for Bambu focuses heavily on active environmental monitoring. It integrates high-efficiency PTC elements that bring the four-spool chamber to 70°C in 20 minutes, backed by dual-airflow circulation designed to prevent hot spots and reel warpage during lengthy print runs. It also integrates smoothly with the original moisture-resistant seals on the Bambu base.
This sunlu ams heater bambu lab attachment provides two distinct operational settings. In Standard Mode, the dryer runs on a default six-hour heating cycle, turning on automatically when relative humidity hits or exceeds 50% and stopping when it drops to 20%. In rH Mode, users can customize target relative humidity levels to match specific sensitive materials. A transparent observation window on top allows quick visual checks of remaining filament without releasing warm air.
At 3.75 pounds, this sunlu filament dryer ams option is ideal for hobbyists printing technical engineering plastics in variable garage conditions. Makers who do not need dual programmable threshold modes can opt for simpler single-button variants instead.
No. 6 of 7 · Yoopai
SainSmart SUNLU AMS Heater Upgrade for Complex Multi-Material Printing
4.5 Amazon buyer average
Best for: Advanced users wanting redundant thermal safety sensors
What the listing says
- Add the Missing Drying Function to Your AMS Designed specifically for the Bambu Lab AMS (1st Generation), The SUNLU AMS Heater transforms your AMS…
- Rapid & Uniform Heating, Up to 70°C Equipped with high-efficiency PTC heating elements, it reaches 70°C in just 20 minutes.
- 【Smart Humidity Monitoring & Safety Protection】Built-in high-precision humidity sensor displays chamber humidity in real time.
- Simple Installation, Perfect Fit for AMS Compatible with Bambu AMS's existing sealing strips and moisture-proof structure.
- Reduce Failure Rates, Boost Print Success Moisture-prone filaments often cause nozzle bursts, weak layer adhesion, or rough surfaces.
Pros
- Fan anomaly and overheat cutoff
- Customizable 25–50% rH mode
- Supports 16-color stacked setups
Cons
- Heaviest unit at 5.55 pounds
- Higher structural bulk
The SainSmart SUNLU AMS Heater Upgrade represents a specialized collaboration aimed at advanced users handling complex technical filaments. Built to maintain print quality across materials like PA, TPU, ABS, and polycarbonate, this unit couples 70°C thermal capability with robust digital controls. Like other advanced lids, it utilizes dual circulation paths to bathe all four spools in balanced convective warmth.
Control functionality on the sainsmart sunlu ams heater includes both the standard 6-hour drying sequence and a flexible rH mode tunable between 25% and 50% relative humidity. For safety, SainSmart incorporates fan anomaly detection, over-temperature cutoffs, and automated system power-down if operating thresholds are breached. The enclosure also features a transparent top window and supports stacked multi-color configurations expanding up to 16 colors.
Weighing 5.55 pounds, this heavy-duty sunlu ams heater upgrade caters to production-focused makers seeking maximum hardware monitoring and safety redundancy. Users looking for the lightest possible lid upgrade may find lighter standalone covers easier to handle.
No. 7 of 7 · Sunlu
SUNLU AMS Heater for High-Capacity Multi-Chamber Setups
4.5 Amazon buyer average
This dual-equipment package brings together the SUNLU AMS Heater alongside the external sunlu s4 filament dryer. Supplying two dedicated heating items in a single package, this bundle provides an integrated heater solution for users who manage significant filament turnover or need to dry raw spools externally while running active jobs through the AMS Gen 1 feeder.
The secondary hardware in this kit expands total drying capacity beyond the four reels enclosed within the printer housing. While print environments in freezing spaces might rely on utility gear like a generac cold weather kit to stabilize surrounding room conditions, dedicated spool chambers keep filament moisture under control right at the toolhead feed.
This package suits makers managing high-output print farms where multiple spools must be pre-conditioned before entering the active material system. Solo hobbyists who only need to dry the four rolls currently mounted inside their AMS can stick with one of the single-lid replacements above.
Before you choose
How to Choose the Right SUNLU AMS Heater
When selecting an ams gen 1 heater, identifying your workshop environment and the technical demands of your filament inventory will guide your choice. All compatible units replace the standard Bambu Lab cover to deliver fast convective heating up to 70°C, but operational controls differ across the range.
- Manual versus Automated Humidity Sensing: Basic lids operate on straightforward timed heating sessions, which work well if you run quick dehydrating runs before routine prints. Models with integrated digital sensors, like the YOOPAI and SainSmart variants, monitor internal humidity in real time and automatically turn off once the air reaches dry thresholds between 20% and 50% rH.
- Chamber Observation and Stacking: If you organize multiple AMS units vertically, the flat-top black SUNLU lid provides a stable resting surface for equipment stacking. Conversely, if checking spool levels without lifting the lid is critical, choose models equipped with a transparent viewing window.
- Hardware Inclusions: Base SUNLU editions include complete physical hinge kits, hex drivers, and fasteners for a rebuild. Third-party partner editions like the Kunphy lid focus on rapid, tool-free swaps utilizing existing AMS seals and friction pins.
- System Capacity Needs: For standard four-spool multi-material printing, a single lid replacement is ideal. If you run multiple printers or need to dehydrate backup spools while printing active jobs, the dual-unit bundle containing an external multi-spool dry box provides the necessary capacity.
Questions people ask
FAQ
Can a SUNLU AMS heater dry filament while printing?
Yes, all SUNLU AMS heater upgrades are designed to run active heating cycles while the Bambu Lab AMS feeds filament directly into the printer toolhead, preventing moisture pickup during multi-hour jobs.
Is the SUNLU AMS heater compatible with the Bambu Lab AMS Gen 2?
No, the product listings specifically state that these heating lids are engineered exclusively for the first-generation Bambu Lab AMS (Gen 1) and will not fit second-generation units.
How do these heaters prevent the AMS feeding motor from overheating?
The lids incorporate an isolated air duct design that directs warm convective airflow through the upper filament spool compartment while shielding the lower motorized feeder gears from direct heat exposure.
Which SUNLU AMS heater to buy for automated shutoff?
Lids featuring dedicated rH humidity modes, such as the YOOPAI and SainSmart editions, provide automated cycling that triggers heating when internal humidity rises above 50% and powers down once levels reach target dryness.
Does installing a SUNLU heater lid require permanent modifications to the AMS?
No, installation is non-destructive across all models. The unit installs as a drop-in replacement for the original manufacturer lid, allowing you to revert to the factory configuration at any time.
Prices, specifications and the feature lines above are read from the product listing and can change without notice. Every score is the average rating Amazon buyers left for that item; nothing on this page is written from handling the product.
