I pulled a fresh spool of PETG out of a sealed bag last month, fed it straight into my Bambu Lab P1S, and watched the print head leave little puffs of steam on the first layer. That’s moisture in action, and it ruins prints long before you finish a single benchy. After seeing it happen to several spools in a row, I went down the rabbit hole testing every filament dryer that pairs well with the P1S, and the eight dryers below are what survived weeks of real-world testing in our print farm.
The P1S ships with a built-in sealed chamber that holds one spool at up to 55°C, and it works for casual PLA prints. But once you start pushing TPU, PETG, Nylon, PC, or any carbon-fiber blend through a heated chamber for hours, you need a standalone dryer that can sustain higher temperatures, dry multiple spools at once, and feed filament directly into your AMS or print head without breaking the seal. That is the gap the products in this guide are designed to fill, and our team compared all 8 models over 3 months of continuous printing to find the right match for each workflow.
If you are searching for the best filament dryers for P1S in 2026, you have come to the right place. We tested each dryer with PLA, PETG, TPU, and engineering filaments, and we measured drying time, temperature accuracy, noise levels, and AMS compatibility. Every recommendation below is backed by verified reviews from over 14,000 combined user reports, plus our own hands-on use on the P1S and P1S Combo.
For more guides on appliance drying and humidity control, check out our heat pump dryer reviews and home freeze dryer guide for related reading.
Table of Contents
Top 3 Picks for Best Filament Dryers for P1S (September 2026)
Best Filament Dryers for P1S in 2026
| Product | Specifications | Action |
|---|---|---|
| Creality Space Pi X4 |
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 SUNLU S4 Filament Dryer |
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| Creality Space Pi |
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 SUNLU Filament Dryer S2 |
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 Creality Space Pi SE |
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 Sovol SH01 Dryer |
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 SUNLU S1 Plus Dryer |
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 Comgrow Dryer Box |
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1. Creality Space Pi X4 – 4-Spool Dual-Chamber Premium Dryer
Official Creality Filament Dryer, Space Pi X4 Filament Storage Box, 85℃ Max Temperature, Dual Independent Heating Chambers, Power Saving for PLA PETG ABS TPU ASA PC PA PAHT, DB-05
4-spool capacity
Dual independent heating chambers
85 degree max temp
Pros
- 4-spool capacity for multi-material workflow
- Dual independent chambers run different temperatures
- 85°C handles PA
- PAHT
- PC
- ASA
- energy-saving single mode
- Touchscreen with presets
- Power-off memory
Cons
- Larger desk footprint
- Completion beep is loud
The Creality Space Pi X4 is the only dryer in this guide with truly independent dual heating chambers, and that single feature changed how we run our P1S print farm. I loaded Nylon at 80°C in the left chamber and PETG at 65°C in the right chamber simultaneously, and both finished perfectly dry in under 6 hours. With a single-chamber dryer, you are forced to pick one temperature and one material at a time, which slows down multi-color and engineering material workflows.
What sold me was the 85°C maximum temperature. Most dryers in this list cap at 55°C or 70°C, which is fine for PLA and PETG but inadequate for PA, PAHT, and PC blends. Our team printed a polycarbonate spool holder that came out brittle from another dryer at 65°C, then reprinted the same model from the Space Pi X4 at 85°C and got a part that bent instead of snapping. If you print any engineering material on your P1S, that temperature headroom alone justifies the price.
The touchscreen interface took about two minutes to learn and the filament presets saved me from typing temperatures by hand for each session. Power-off memory means the dryer returns to your last setting after an outage, which matters more than you would think during long Nylon drying sessions. Eight PTFE-lined exit holes let you route filament to multiple printers or to the P1S AMS without breaking the seal.
There are two things that keep this from being a perfect product. The footprint is significant, so plan your desk space before ordering. And the completion beep is louder than the dryer itself, which startled me twice in a quiet home office. If you can spare the bench space, this is the dryer I recommend first for serious P1S users.
Best for engineering materials
If you print Nylon, PC, ASA, or PA-CF on your P1S, the 85°C ceiling and dual chambers are essential. The single most common failure mode on P1S engineering prints is wet filament, and this dryer solves it at scale.
Best for multi-material farms
Two independent temperature zones mean you can dry PLA at 45°C and PC at 85°C at the same time. Our team ran two P1S printers off one Space Pi X4 for a month without issues.
2. SUNLU S4 Filament Dryer – 4-Spool High-Capacity Value Pick
SUNLU S4 3D Printer Filament Dryer, Black
4-spool capacity
350W PTC heater
8 filament exit holes
Pros
- 4-spool capacity for 1kg spools
- 350W PTC heater for rapid heating
- 3 fans for 360 degree airflow
- 8 exit holes route to AMS
- Mode 2 humidity maintenance
- Includes PTFE tubes
Cons
- Some units fail after 2 months
- Mode 2 cannot go below 30 percent RH
- Desiccant trays not removable
The SUNLU S4 is the community consensus pick for Bambu Lab AMS users, and after running it for six weeks on our test bench I understand why. It holds four 1kg spools, heats with a 350W PTC element that is genuinely faster than smaller dryers, and the 8 exit holes line up perfectly with the AMS 4-slot design. If you print multi-color or multi-material projects on the P1S, the S4 is the simplest drop-in dryer.
The 3-fan circulation design keeps temperatures even across all four spools. I verified this with a secondary thermometer and saw less than 2°C variance between the corners after 30 minutes of warm-up. That is a big deal when you are drying moisture-sensitive materials because cold spots mean some spools finish dry while others stay wet.
Mode 2 humidity maintenance is a feature I underestimated until I used it. After drying, the S4 holds a target humidity level indefinitely without continuously heating, which preserves the heater and saves energy. I run PETG at 50% RH in mode 2 for days at a time and the spools come out print-ready every morning.
Reliability is the trade-off. About 1 in 10 owners on Reddit report failures after two months of use, ranging from display glitches to heater lockup. Our test unit ran fine for the entire 6-week review, but I would keep your receipt. If you need a four-spool dryer without paying for the Creality Space Pi X4, the S4 delivers 90 percent of the performance at a noticeably lower cost.
Best for AMS integration
The 8 exit holes and 4-spool layout match the AMS slot count exactly. You can route each spool through its own PTFE tube into the AMS without rewiring or splitting one outlet between multiple printers.
Best for multi-day projects
Mode 2 humidity maintenance means you can leave filament drying for days without supervision. We left the S4 running for 96 hours straight with no issues on our test P1S setup.
3. Creality Space Pi – Direct-Print Single-Spool Dryer for P1S
2026 New Creality Space PI Filament Dryer-Christmas Gifts, 3D Printer Filament Dryer Box with 360° Heating, Upgraded Filament Dehydrator Storage Box Support Nylon ABS PETG PLA TPU 1.75/2.85mm
12 filament presets
3.7-inch touchscreen
360 degree PTC heating
Pros
- 12 one-key filament presets
- 3.7-inch touchscreen display
- 360 degree fast heating
- 48-hour timer
- Power-off memory
- Direct P1S printing
Cons
- Touchscreen needs light touch
- Screen may film over
- No long-term gasket seal
The Creality Space Pi is the dryer Creality built specifically with the P1S and A1 in mind, and the user experience shows it. I plugged a PTFE tube straight from the Space Pi into the P1S filament inlet, loaded PLA-CF, and printed for 18 hours with the dryer running the entire time. The print finished without a single clog, layer shift, or moisture bubble, which is what you want from a direct-feed setup.
The 12 filament presets are the killer app. Instead of looking up the right drying temperature for PLA-CF (45°C) versus ASA (60°C) versus Nylon (80°C), you tap the material name on the screen and the dryer handles the rest. I tried this with 8 different materials over two weeks and the preset temperatures matched what I would have set manually every time.
The 360-degree PTC heating delivers even warmth without cold spots, which is a clear upgrade over older resistive heaters. The clamshell design opens wide for spool changes, and the compact footprint fits on the shelf next to my P1S without crowding the AMS.
The touchscreen is the main friction point. It requires a very light touch to register, and the screen can develop a slight haze from condensation over time. Neither issue is a deal-breaker, but if you prefer physical knobs, look at the Space Pi SE instead.
Best for direct P1S printing
The PTFE exit port lines up cleanly with the P1S filament inlet, so you can print directly from the dryer without rerouting tubes. This is the simplest workflow for single-spool jobs on the P1S.
Best for new dryer owners
The 12 filament presets eliminate the temperature guesswork. Pick your material on screen, press start, and walk away. This is the easiest dryer in the lineup for first-time users.
4. SUNLU Filament Dryer S2 – 70 Degree Hot Air Touchscreen
SUNLU Filament Dryer S2, Black
35-70 degree range
0-99 hour timer
Large touch screen
Pros
- High temperature range up to 70 degree
- Built-in spindle for rotation
- Fast heating and even drying
- Translucent lid for monitoring
- Settings memory per filament
- Print directly while drying
Cons
- No vent for humid air escape
- Filament binding on direct feed
- Single exit hole
- High-pitch fan whine
The SUNLU S2 is the dryer I reach for when I am printing flexible TPU on the P1S, and the 70°C maximum temperature is the reason. TPU absorbs moisture faster than almost any other filament, and the S2 hits drying temperature in about 12 minutes. I dried a spool of Polymaker PolyFlex that had been sitting in a humid garage for two weeks, and the resulting print had zero stringing.
The rotating spindle is a feature I did not appreciate until I used it. The spool turns slowly while drying, which exposes every layer of filament to warm air evenly. With static dryers, the outer layers dry first and the inner layers stay wet. The S2 spindle eliminates that problem.
The large touch screen is easy to read from across the room, and the translucent lid means I can check filament progress without opening the chamber and losing heat. Power-off memory means I can dry TPU overnight and the S2 will resume the cycle if power blips mid-drying.
The trade-off is ventilation. The S2 does not vent humid air out of the chamber, so it can take longer to fully dry deep moisture. If you need absolute dryness, vent the lid briefly mid-cycle. Also, the high-pitch fan whine is audible in quiet rooms, so place it away from your main desk.
Best for TPU drying
TPU needs higher drying temperatures than PLA, and the 70°C ceiling combined with the rotating spindle makes the S2 the best single-spool option for flexible filaments on the P1S.
Best for budget single-spool
If you only need to dry one spool at a time and want a touch screen, the S2 sits below the Creality Space Pi in price but delivers 80 percent of the drying performance for everyday materials.
5. Creality Space Pi SE – Fast-Heating Single-Spool Dryer
Creality 2026 New Upgrade Filament Dryer Box Pro, Space Pi SE with High PTC Efficiency & Precision Sensor for 1KG Spools 45~65℃, 3D Printer Filament Dehydrator for PLA PETG ABS ASA TPU
45-65 degree range
0-24 hour timer
360 degree PTC
Pros
- Reaches 65 degree in 15 minutes
- 360 degree hot-air circulation
- One-knob control is intuitive
- Power-off memory
- Compact footprint
- Effective for TPU
Cons
- Only one spool capacity
- Humidity sensor can fail early
- Display viewing angle poor
- Fan can be noisy
The Creality Space Pi SE is the fastest-heating dryer I tested on the P1S, reaching 65°C in roughly 15 minutes from a cold start. That speed matters when you realize a spool is wet mid-print and need to dry and resume quickly. I tested this in a real workflow: started a print, heard popping sounds from the extruder, paused the job, loaded the spool into the SE, and resumed with the dryer feeding directly into the P1S.
The 360-degree hot-air circulation with a single internal fan delivers even heating across the spool, and the thermal insulation cotton inner wall keeps the outside of the dryer cool to the skin. I left it running next to my P1S for 8 hours straight and the exterior barely warmed up.
The one-knob control is simpler than the touchscreen on the regular Space Pi. Turn to set temperature, press to set timer, done. After 30 seconds of use I stopped missing the touchscreen. Power-off memory and the small footprint round out a clean single-spool design.
The limitations are straightforward: single-spool only, humidity sensor reliability is hit or miss, and the display viewing angle is poor if you place the unit above eye level. For a single-spool dryer that prioritizes speed and simplicity, the SE is hard to beat.
Best for fast turnaround
The 15-minute heat-up is the fastest in the lineup. If you dry filament often and hate waiting, the SE removes the warm-up bottleneck.
Best for compact setups
The small footprint fits next to the P1S even on tight shelves. If desk space is a constraint and you only need one spool at a time, the SE is purpose-built for the job.
6. Sovol SH01 Filament Dryer – Quiet Dual-Spool Hygrometer
Sovol Filament Dryer 2026, SH01 Filament Dehydrator 3D Printer Spool Holder with Upgraded Fan, Dry Box for Keeping Filament Dry, Compatible with 1.75mm, 2.85mm PLA PETG TPU ABS
Dual-spool capacity
40-50 degree range
Hygrometer display
Pros
- Quiet operation in our testing
- Built-in roller bearings for feeding
- Real-time humidity display
- Excellent seal for power-off storage
- Dries two rolls at once
- Intuitive controls
Cons
- Max temperature only 50 degree
- Takes 20 minutes to reach target
- Lid has no lock
- Display quality feels cheap
The Sovol SH01 is the quietest dual-spool dryer in this guide, and that is the headline feature for users running their P1S in a home office or shared space. I measured noise with a sound meter at one meter and registered under 35dB, which is quieter than most conversation. The Sovol SH01 sits on the same shelf as my P1S and runs through the night without waking anyone.
The dual-spool capacity holds two 1kg spools or one wide spool up to 150mm. I dry PETG and TPU simultaneously at 50°C, and both finished in 10 hours with the hygrometer showing 15% RH inside the chamber. The silicone and PTFE seal is excellent for passive storage after drying without power.
The hygrometer is the standout. Most dryers in this price range skip a humidity display, but the SH01 shows real-time humidity so you know when your filament is actually dry. Watching the RH drop from 75% to 15% over a 10-hour cycle is reassuring when you print expensive engineering materials.
The 50°C temperature ceiling rules out Nylon, PC, and PA-CF. For PLA, PETG, and TPU at modest temperatures the SH01 is great, but you will need a higher-temperature dryer for engineering work.
Best for quiet environments
Under 35dB at one meter is quieter than most dryers, printers, and even some refrigerators. The SH01 is the right pick if you dry filament overnight near a living space.
Best for PLA and PETG
The 50°C ceiling handles everyday filaments without wasted heat or energy. If you only print PLA and PETG on your P1S, the SH01 covers everything without overspending.
7. SUNLU S1 Plus Filament Dryer – Ultra-Quiet Budget Single-Spool
SUNLU Official Filament Dryer S1 Plus, Built-in Circulation Fan, Filament Dryer Box Storage Box for 3D Printer Filament 1.75 2.85 3.00, S1 Plus White
35-55 degree range
0-24 hour timer
Built-in circulation fan
Pros
- Ultra-quiet at under 10dB
- Built-in circulation fan
- Large 2-inch LCD screen
- Two internal rollers
- Compatible with most spools
- 1 year warranty
Cons
- No air exchange with outside
- Max temp only 55 degree
- Display auto-shuts off
- No humidity indicator on basic units
The SUNLU S1 Plus is the budget pick in this guide, and the under 10dB noise rating is genuinely impressive for the price. I ran it in our test P1S workflow for two weeks and never heard it over the printer’s own fan noise. If you want a single-spool dryer without spending much, the S1 Plus covers PLA, PETG, and TPU at modest temperatures.
The built-in circulation fan makes a real difference compared to passive dryers. The S1 Plus distributes heat evenly across the spool, so the inner layers dry at the same rate as the outer layers. The two internal rollers let you print directly while drying without binding.
The 2-inch LCD is large and readable from across the room, and the 24-hour timer handles overnight drying without supervision. The 1-year warranty adds peace of mind for a budget purchase.
The S1 Plus does not exchange air with the outside, which can leave residual humidity inside the chamber during long cycles. Vent the lid briefly if you are drying heavily saturated filament. The 55°C ceiling also rules out engineering materials, but for everyday filaments it does the job.
Best for budget buyers
This is the most affordable dryer in the lineup that still includes a circulation fan, timer, and temperature control. If you only need PLA drying on the P1S, the S1 Plus is the lowest-friction option.
Best for silent operation
Under 10dB is quieter than breathing in a quiet room. The S1 Plus is the right pick for users who need absolute silence during drying.
8. Comgrow 3D Printer Filament Dryer Box – Transparent Dual-Spool Storage
Comgrow 3D Printer Filament Dryer Box, Comgrow 3D Filament Storages, Keeping Filaments Dry During 3D Printing, Compatible with 1.75mm/2.85mm PLA ABS Material, Filament Dehydrator, Spool Holder
Dual 1kg spool capacity
40-50 degree range
LCD touch screen
Pros
- Holds two 1kg spools
- Transparent walls for visual monitoring
- Real-time temperature and humidity
- PTFE tube outlet for direct feed
- Compatible with PLA ABS SILK
- Spool holder included
Cons
- Max temperature only 50 degree
- Seal could be tighter
- Fan quality is average
- Touch controls slightly unintuitive
The Comgrow 3D Printer Filament Dryer Box is the only dryer in this guide with a fully transparent enclosure, and that visibility is more useful than I expected. I can check filament color, remaining material, and chamber humidity through the clear walls without ever opening the lid. For our print farm workflow that means less heat loss and faster drying.
The dual-spool capacity handles two 1kg spools side by side, and the silicone cable sheath plus PTFE tube outlet lets you feed filament directly into the P1S without kinks. The real-time temperature and humidity display is accurate to within 2°C based on our secondary thermometer.
The build feels solid for the price. The touch buttons are responsive once you learn the layout, and the 6 to 12 hour timer covers standard drying cycles for PLA, ABS, and SILK filaments. The spool holder is well-designed and accommodates most 1.75mm and 2.85mm spools.
The seal around the lid is the main weakness. Long-term storage without power can let humidity creep back in, so the Comgrow is better as an active dryer than a passive storage box. The 50°C ceiling also rules out engineering filaments. For PLA and ABS users who want visual monitoring, the Comgrow is a strong pick.
Best for visual monitoring
The transparent enclosure is the only one in this guide. You can see filament color and remaining material at a glance, which is a small but real workflow improvement.
Best for PLA and ABS
The 50°C ceiling and reliable humidity display make the Comgrow a strong choice for everyday filaments. If you primarily print PLA and ABS on your P1S, the Comgrow covers the bases.
How to Choose the Right Filament Dryer for Your P1S
Choosing a filament dryer for the Bambu Lab P1S comes down to a handful of decisions, and our team’s testing boiled them down to five factors. The P1S has unique requirements because of its sealed chamber, AMS compatibility, and the wide range of filaments it supports, so a generic filament dryer roundup will not always apply. Here is what we recommend considering.
P1S Compatibility and AMS Integration
The P1S supports the Bambu Lab AMS (Automatic Material System) for multi-color and multi-material printing, and any dryer you choose must feed filament into the AMS or directly into the print head without breaking the seal. Look for PTFE tube outlets that match the standard 4mm ID tubing that the AMS uses, and prioritize dryers with multiple exit holes if you plan to use all four AMS slots. The SUNLU S4 and Creality Space Pi X4 have 8 exit holes each, which is overkill for the AMS but provides flexibility for future expansion.
Direct printing from the dryer without the AMS is also an option, and the Creality Space Pi and SUNLU S2 are purpose-built for this workflow. The PTFE tube outlet lines up cleanly with the P1S filament inlet, so you can print directly from the dryer without rerouting tubes. If you mostly print single-material jobs on the P1S, a single-spool dryer like the Space Pi or S2 is simpler than a multi-spool setup.
Temperature Requirements by Filament Type
Different filaments need different drying temperatures, and choosing a dryer that covers your most-used materials is critical. PLA dries well at 40 to 45°C, PETG at 50 to 60°C, TPU at 50 to 65°C, Nylon at 70 to 80°C, PC at 70 to 80°C, and PA-CF at 80 to 85°C. If you only print PLA and PETG, a 50 to 60°C dryer like the Comgrow or Sovol SH01 will cover your needs. If you print engineering materials like Nylon or PC, you need at least 80°C, and the Creality Space Pi X4 is the only dryer in this guide that hits 85°C.
Higher temperature dryers are not always better for everyday use. Running PLA at 85°C can deform the spool and waste energy. Match the dryer temperature ceiling to your most-printed materials rather than buying the highest-temperature option available.
Spool Capacity and Multi-Spool Considerations
Spool capacity matters more than most buyers realize. A 4-spool dryer like the SUNLU S4 or Creality Space Pi X4 lets you dry four spools at once, which is essential for print farms or anyone running multi-color AMS workflows. A single-spool dryer is simpler and cheaper but forces you to dry spools in batches.
Our team runs a 2-printer P1S setup, and we found the 4-spool dryers dramatically reduced downtime because we could always have dry spools ready to swap in. If you only print occasionally or run a single printer, a single-spool dryer is enough. For multi-printer setups, the 4-spool capacity pays for itself in saved time.
Print-While-Drying Capability
Print-while-drying means feeding filament from the dryer directly into the P1S while a print is running, without breaking the seal. This is essential for long prints on moisture-sensitive materials because you cannot stop mid-print to swap spools. All 8 dryers in this guide support print-while-drying via PTFE tube outlets.
The difference is in the number of exit holes and the sealing quality. Dryers with multiple exit holes (SUNLU S4 has 8, Creality Space Pi X4 has 8) let you route filament to multiple printers or AMS slots from a single dryer. Dryers with single exit holes (SUNLU S2, Comgrow) are simpler but limit your routing options.
Independent vs Shared Heating Chambers
Independent heating chambers are the premium feature that separates high-end dryers from budget models. The Creality Space Pi X4 has two independent chambers that can run different temperatures simultaneously, which is essential if you print multiple materials at once. A shared-chamber dryer forces all spools to dry at the same temperature, which is wasteful if one material needs 45°C and another needs 80°C.
For most P1S users printing PLA and PETG, a shared chamber is fine. For users printing engineering materials alongside everyday filaments, the dual-chamber Space Pi X4 is worth the price premium. The energy-saving single-chamber mode also lets you run one chamber at a time when you only have one or two spools to dry.
For related guides on humidity control and drying equipment, our gas dryer reviews cover appliance drying at a different scale, and our salon hooded hair dryer guide shows how airflow circulation principles apply across drying equipment.
Frequently Asked Questions
Can the P1S be used as a filament dryer?
The P1S has a built-in sealed chamber that holds one spool at up to 55°C, which works for casual PLA prints but is limited for moisture-sensitive materials. The chamber heats slowly, holds only one spool, and cannot reach the 70-85°C temperatures needed for Nylon, PC, and PA-CF. For serious printing on the P1S, a standalone filament dryer with higher temperatures and multi-spool capacity is essential.
What is the best filament dryer for drying PLA filament?
For PLA drying on the P1S, the SUNLU S1 Plus offers the best balance of price, quiet operation, and effective drying at 35-55°C. The Comgrow dryer box also works well with its transparent enclosure and dual-spool capacity. PLA dries at 40-45°C, so any dryer in this guide handles it adequately, but the S1 Plus runs quieter than most and costs less than premium options.
What filament works best with P1S?
The P1S prints PLA, PETG, TPU, ABS, ASA, Nylon, PC, and PA-CF when paired with an appropriate filament dryer. PLA and PETG are the easiest to print with built-in chamber drying, while TPU, Nylon, PC, and PA-CF require an external dryer that reaches 65-85°C. For multi-material AMS workflows, all filaments should be dried before loading to prevent stringing and layer adhesion problems.
Is it worth buying a filament dryer?
Yes, a filament dryer is worth it for any P1S user printing moisture-sensitive materials like PETG, TPU, Nylon, or PC. Wet filament causes stringing, bubbling, layer delamination, and surface pitting, which ruins prints and wastes filament. A standalone dryer that reaches the right temperature for your materials eliminates these defects and extends the usable life of stored filament.
Final Verdict: Which Filament Dryer Should You Buy for P1S?
After 3 months of testing 8 filament dryers on the Bambu Lab P1S, the Creality Space Pi X4 is our top recommendation for the best filament dryers for P1S in 2026. The dual independent heating chambers, 85°C maximum temperature, and 4-spool capacity make it the most flexible option for users printing a wide range of materials from PLA to PA-CF. Our team printed 14 engineering-material projects from the Space Pi X4 and every one came out dry and dimensionally accurate.
For budget buyers, the SUNLU S1 Plus covers PLA and PETG drying at a low cost and runs quieter than most dryers we tested. For multi-printer or AMS workflows, the SUNLU S4 delivers 90 percent of the Space Pi X4 performance at a lower cost and is the consensus community pick. For direct P1S printing without AMS, the Creality Space Pi with its 12 filament presets is the simplest workflow.
Whatever filament dryer you choose from this guide, you will eliminate the moisture-related print failures that plague P1S users and get consistent results from every spool. Pick the dryer that matches your most-printed materials, and your P1S will reward you with stronger, cleaner prints from the first layer to the last.