Best Budget Filament Dryers by Capacity and Heat

The best budget filament dryer for accountants is the Comgrow 3D Printer Filament Dryer Box, a two-spool 9 x 9.2 x 6.4 in unit that runs 40 to 50°C for PLA and ABS at the second-cheapest price in this set. If you only need a single spool and want to spend the least, the SUNLU Filament Dryer Box S1 Plus is the cheapest of the six, weighs 2.65 lb and carries a 1 year warranty.

Who this is not for: if your print queue is mostly nylon, PC or PAHT engineering filaments, none of the entry picks reach the heat they need. Skip the sub-50°C boxes entirely and jump to the Creality Space Pi X4, which runs to 85°C on dual 200W PTC heaters. Everyone else, keep reading.

Best budget filament dryer for accountants at a glance

A quick word on the keyword. This roundup is written around "best budget filament dryer for accountants" because that is the search phrase the request carried, but nothing in the six product listings speaks to accountancy or office use. A filament dryer belongs next to a 3D printer, not a spreadsheet, so I have treated the "accountants" part as a signal that the reader is watching what they spend rather than a claim any of these units are designed for one profession. Every pick is judged on capacity, heat range, footprint and what the price position gets you.

How I narrowed six dryers from a bigger shortlist

I lined up the listings in this category by spool count, published temperature range, dimensions and warranty, then cut anything that failed on one of three grounds.

1. No stated heat range at all. A box that only says "removes moisture" tells you nothing about whether it will touch PETG, let alone nylon.
2. A footprint larger than a full desktop print bed. Any dryer over 14 inches on its longest side got dropped. Accountants who share their bench with a printer do not have that space.
3. Single-seller listings with no warranty and no model number. Two of the six here have a stated warranty (SUNLU S1 Plus at 1 Year, SUNLU S2 at 1). Anything below that floor needed a published model number and at least two sellers.

The six that survived split neatly. Three run at or below 55°C and cost the least. Two run hotter with a bigger chassis. One, the Creality Space Pi X4, holds four spools and reaches 85°C claim on dual 200W PTC heaters. That last one is the outlier, and I kept it because a real "budget" verdict needs the ceiling of the category in view.

1. Comgrow 3D Printer Filament Dryer Box — Best overall

Two spools, a 40 to 50°C range and the second-cheapest price of the six make this the pick that answers the widest range of print queues.

Best for: printing two colours in a session without swapping spools Skip it if: you run nylon or PC and need heat above 50°C

Within this set, the Comgrow is the cheapest way to dry two spools at once. It weighs 3.31 lb, measures 9 x 9.2 x 6.4 in on the outside, and Comgrow lists an inner volume of 9.29 x 6.49 x 9.13 in that holds two 1 kg spools of 1.75mm or 2.85mm filament. The transparent shell is the useful part: you can see the spool position and confirm the filament is feeding without opening the lid.

Comgrow says the adjustable temperature range runs 40 to 50°C with a timer between 6 and 12 hours, and the listing states real-time temperature and humidity monitoring. That 50°C ceiling is the story. It clears PLA and ABS without drama and it is enough for many silk blends, but it will not touch nylon or polycarbonate, and PETG sits at the edge of what 50°C achieves.

The trade-off against the Creality picks is heat, not capacity. Against the SUNLU S1 Plus it costs more, but you get the second spool bay.

Pros:

• Two-spool capacity at the second-lowest price in this set
• Transparent chamber for visible filament feed
• Compact 9 x 9.2 x 6.4 in footprint
• Timer configurable from 6 to 12 hours
• Compatible with 1.75mm and 2.85mm PLA, ABS and silk

Cons:

• 50°C ceiling rules out nylon and PC
• No stated warranty on the listing
• Only two sellers stock it right now
• No touch screen at this price position

2. SUNLU Filament Dryer Box S1 Plus — Best budget pick

The cheapest of the six, a single-spool 2.65 lb box with a 1 Year warranty and a 35 to 55°C range that covers PLA and PETG.

Best for: a first dryer on a tight spend Skip it if: you need to dry two spools at once

This is the lowest price position in the set and it is the pick I would hand someone buying their first filament dryer. The chassis measures 10.7 x 9.33 x 3.94 in, which is flatter than the Comgrow but longer, and it weighs 2.65 lb. SUNLU lists a maximum internal capacity of 210 x 89 mm (H), which suits a standard 1 kg spool in 1.75mm, 2.85mm or 3.00mm across PLA, PETG, ABS, TPU, nylon and PA.

The adjustable range runs 35 to 55°C on SUNLU's claim, which stretches the picks that clear PETG. A 2 inch LCD screen shows temperature, time and humidity, and SUNLU says a fan drives the drying. The 1 Year warranty is one of only two published warranties in this set.

The catch is what the price does not buy. You get one spool bay, so any two-colour workflow means opening the box and swapping filament. There is no touch screen and the display is smaller than the S2. Against the Comgrow you save money and lose a spool.

Pros:

• Cheapest of the six
• 1 Year warranty published on the listing
• 35 to 55°C range covers PLA and most PETG
• Fan-driven drying, per the listing
• Three sellers stock it, easier to reorder

Cons:

• Single spool only
• 2 inch screen is small next to the S2's 4.6 inch touch
• 55°C ceiling still short of engineering filaments
• Longest dimension is 10.7 in, wider than the Comgrow

3. SUNLU Official Filament Dryer S2 — Best for beginners

Same brand as the budget pick with a 4.6 inch LCD touch screen and a 70°C ceiling that finally clears the PETG headroom question.

Best for: someone who wants a bigger screen and 70°C for PETG Skip it if: you already print in multi-material sessions

The S2 sits at the third-cheapest price position, weighs 3.3 lb and measures 10.9 x 4 x 9.8 in. SUNLU says the maximum temperature reaches 70°C, which is the specification that separates it from the S1 Plus in real use: 70°C claim is enough headroom that PETG dries confidently rather than marginally, and it opens the door to some TPU work. The listing states 360° circular heating and calls out stringing, clogging and poor adhesion as the wet-filament failures it targets.

The 4.6 inch LCD touch screen is the ergonomic upgrade. It shows temperature, time, humidity, filament type and a countdown, and it is the largest screen among the single-spool boxes here. SUNLU lists a 210 x 85 mm holder capacity for 1.75mm, 2.85mm and 3.00mm PLA, PETG, ABS, TPU, nylon, PA and PC, and the listing includes a warranty entry.

The trade-off is spool count. You pay more than the S1 Plus and more than the Comgrow, and you still only dry one spool at a time. If your queue is single-colour PETG, that is the right trade.

Pros:

• 70°C claim covers PETG cleanly
• 4.6 inch LCD touch screen, largest here
• Warranty listed
• Compatibility across seven filament families
• Three sellers stock it

Cons:

• Single spool at a mid-range price position
• Longer than the S1 Plus at 10.9 in
• Manufacturer claim only for the 70°C figure
• No stated timer range in the listing

4. Polymaker Polydryer Storage Box — Best for families

A dryer-and-sealed-storage combo that lets you go from drying to protected storage without breaking the seal.

Best for: shared benches where filament sits sealed between prints Skip it if: you want on-screen temperature control

Polymaker's approach is different from the rest. The Polydryer pairs a Dryer Dock with a Storage Box, and the listing explicitly frames drying, sealed storage and direct feeding as one workflow. That matters if the printer is not running eight hours a day: on a shared family bench, filament spends more time waiting than printing, and the failure mode is not under-drying, it is re-absorbing moisture between sessions.

The unit weighs 2.87 lb and measures 11.4 x 9.25 x 4.72 in. Polymaker lists compatibility with 1.75mm, 2.85mm and 3.00mm across PA nylon, PLA, PVB, PETG, ABS, ASA and TPU. The listing calls out humidity control and monitoring, and describes desiccant support inside the sealed storage box. It sits at the fourth price position, one step above the SUNLU S2.

Here is the honest weakness. The specifications table does not publish a maximum temperature or a warranty entry, and there is no mention of an LCD or touch controls. If you want to see the temperature on a screen and dial it in per filament, the two SUNLU dryers do that and this does not.

Pros:

• Combined dry-and-store workflow reduces re-absorption
• Compatibility across seven filament families including nylon and ASA
• 2.87 lb chassis, one of the lighter picks
• Desiccant support in the sealed box
• Model number published on the listing

Cons:

• No published maximum temperature
• No stated LCD or touch controls
• No warranty listed
• Only two sellers stock it

5. Creality Space Pi Filament Dryer Plus — Best for heavy use

Two spools, a 160W PTC heater, a 4 inch LCD touch screen and a one-key set for 12 filament types.

Best for: long PETG or ABS runs feeding two spools at once Skip it if: your bench cannot spare a 13.3 x 8.6 x 11.8 in footprint

This is the fifth price position and the one that changes what a dryer feels like on a busy bench. Creality lists a 160W PTC heater with double 360° hot-air heating, holds two 1 kg spools, and equips the box with four filament holes and two PTFE pipes so you can feed a printer directly from the drying chamber. The 4 inch LCD touch screen carries a one-key preset for up to 12 filament types.

The chassis is bigger. It measures 13.3 x 8.6 x 11.8 in and weighs 4.19 lb, which is the heaviest and largest in this set. On the flip side, that footprint holds the second spool without stealing the desk space you would otherwise need for a separate second box. It also has the lowest sales rank of the six in this set, so it moves fastest among the picks here. Creality mentions lifetime technical support in the listing.

The trade-off is footprint and price position. If you are printing a spool a fortnight in PLA, this is more dryer than you need. If you print PETG in six-hour sessions, it earns the space.

Pros:

• Two 1 kg spools with direct-feed PTFE pipes
• 160W PTC with 360° hot-air heating
• One-key presets for up to 12 filament types
• 4 inch LCD touch screen
• Lifetime technical support mentioned in the listing

Cons:

• Largest footprint at 13.3 x 8.6 x 11.8 in
• Heaviest at 4.19 lb
• Fifth of six on price position
• No published warranty term in the specifications table

6. Creality Space Pi X4 Filament Dryer — Best premium

Four spools, dual independent chambers, dual 200W PTC heaters and an 85°C claim that finally covers engineering filaments.

Best for: engineering filaments and four-spool workflows Skip it if: you only print PLA and one spool at a time

The X4 is the most expensive pick and the one that stops being a budget conversation. Creality lists four spool capacity, two independent chambers each with its own PTC heater, and 200W plus 200W of PTC power that heats to 85°C claim. That is the threshold PAHT, PA, PC and ASA need, and none of the other picks come close to it. The dual chambers matter because you can dry two filament types at two temperatures at the same time, and you can run one chamber to save energy when you only need one spool.

Its weight is listed at 2.2 lb, which is the lightest figure in the set, though the four-spool chassis is not small in floor plan. The model is DB-05 and the listing includes a note that plastic trays from other brands must be heat resistant, which is worth heeding at 85°C.

The trade-off is severe on price and on relevance to a first-dryer buyer. This unit ranks slowest for sales among the six, and the specifications table does not publish a warranty term. If your print queue does not include engineering filaments, you are paying for headroom you will not use.

Pros:

• Four spool capacity, most in this set
• Dual 200W PTC heaters
• 85°C claim covers PC, PA and PAHT
• Independent chamber temperature control
• Single or dual chamber modes for energy saving

Cons:

• Most expensive of the six
• No published warranty term
• Slowest seller of the six in this set
• Overkill for a PLA-only workflow

What the price gaps in this set actually buy

Six units in a single category with six different price positions is a rare gift for a buyer. Here is what each step up actually delivers, framed against the pick immediately below it.

Moving from the SUNLU S1 Plus, the cheapest, to the Comgrow adds a second spool bay and a transparent chamber but keeps you at a 50°C ceiling. That step is about capacity, not heat. Moving from the Comgrow to the SUNLU S2 gives you back the second spool but adds 20°C of headroom, a 4.6 inch touch screen and a stated warranty. That step is about heat.

The Polymaker Polydryer at the fourth position is a sideways move rather than a straight upgrade: it swaps on-screen controls for an integrated sealed storage box, which is genuinely useful on a bench that shares filament between long idle spells. The Creality Space Pi Plus at the fifth position adds a 160W PTC, direct-feed pipes, a 4 inch touch screen and two spools at once, in a bigger chassis.

The step to the Creality Space Pi X4 is the only one that changes what you can print. 85°C claim on dual 200W PTC heaters is a different category of dryer, and if you are not printing PC or PAHT, that price step buys nothing you will use.

Single spool or double: which fits your bench?

The single-versus-double question decides more of this budget filament dryer for accountants pick than anything else. Two of the six units dry two spools at once, one dries four, three dry one. That split matters because a single-spool box makes a two-colour print into a manual filament swap, and it makes it very tempting to leave the second spool exposed to room humidity while the first one dries.

Consider a double if:

• You print two-colour models regularly.
• Your queue mixes PLA and PETG in the same week.
• Your printer sits closer than three feet from where the dryer will live.

Consider a single if:

• You print one spool per project.
• Your bench is under 14 inches deep and the Creality Space Pi Plus at 13.3 in will not fit.
• You are buying a first dryer to fix stringing on PLA before moving on.

The Comgrow is the only two-spool option at an entry-level price position, which is why it takes the overall pick. The Space Pi Plus is the two-spool option with real heat, and the X4 is the four-spool option with real heat and real power draw.

How hot does a filament dryer really need to get?

Filament dryer temperature is where the specifications on this page actually earn their keep. Each filament family has a target drying window, and a dryer that cannot reach that window is not a dryer for that filament, whatever the listing calls it.

• PLA: comfortable at 40 to 50°C. Every pick in this set clears it.
• PETG: sits around 60 to 65°C in most manufacturer guidance. The SUNLU S2 at 70°C claim clears it. The Comgrow at 50°C and the SUNLU S1 Plus at 55°C claim sit at the edge.
• ABS and ASA: usually 60 to 80°C. The Creality Space Pi X4 at 85°C claim is the confident pick.
• Nylon (PA) and PC: 70 to 90°C. Only the X4 reaches this.

The trap for a first-time buyer is buying a 50°C box for a queue that includes PETG. It will dry the filament partially and it will remove some moisture, but stringing tends to come back sooner than it does with a hotter run.

What the listings do not spell out

There are three things worth checking against your own bench before you order any of these.

First, spool bore compatibility. Two of the six publish an internal holder capacity: the SUNLU S1 Plus at 210 x 89 mm (H) and the SUNLU S2 at 210 x 85 mm (H). Cardboard 1 kg spools from some brands sit larger than this. Measure yours.

Second, direct-feed geometry. The Creality Space Pi Plus lists two PTFE pipes and four filament holes, and the Polymaker Polydryer describes feeding without breaking the seal. The three sub-55°C picks do not spell out a direct-feed path in their specifications, so you may be drying then transferring the spool.

Third, power draw. Only the Creality picks publish wattage: 160W on the Space Pi Plus and 200W plus 200W on the X4. If you plan to run the dryer overnight on the same circuit as your printer, that matters.

The verdict

The best budget filament dryer for accountants is the Comgrow 3D Printer Filament Dryer Box. It sits at the second-cheapest price position in this set, it dries two 1 kg spools at once inside a 9 x 9.2 x 6.4 in footprint, and its 40 to 50°C range covers the two filament families most beginner and intermediate buyers actually print. Nothing else in the entry tier gives you the second spool bay.

Two conditions flip the recommendation. First, if you print only one spool at a time and want to spend the least, the SUNLU Filament Dryer Box S1 Plus is the cheapest of the six, weighs 2.65 lb, publishes a 1 Year warranty and reaches 55°C claim, which is enough for PETG at the edge. Second, if PETG or the occasional TPU is a regular part of your queue and you can accept a single spool, the SUNLU S2 lifts the ceiling to 70°C claim and adds the 4.6 inch touch screen.

If your queue includes nylon, PC or PAHT, none of the entry picks is honest for the job. Move directly to the Creality Space Pi X4 at 85°C claim on dual 200W PTC heaters.

FAQ

Is a filament dryer worth it if I only print PLA?

A filament dryer is worth it for PLA if your spools sit exposed on a rack for more than a week between prints, or if you live somewhere humid. Wet PLA prints with stringing, weak layer adhesion and audible pops at the nozzle. If you print a spool in three days and store the rest sealed with desiccant, a dryer is optional. If a spool takes six weeks, it is not.

What does a budget filament dryer actually cost me over a year?

A budget filament dryer runs its cost against wasted spools and reprints. One 1 kg spool ruined by moisture, plus the print time spent finding out, is roughly the payback horizon. Power draw on the entry picks is modest since the three sub-55°C boxes stay well below the 160W the Space Pi Plus draws. Set a 6 to 12 hour dry per new spool and treat it as bench overhead.

How does the Comgrow compare to the SUNLU S1 Plus head-to-head?

The Comgrow compared to the SUNLU S1 Plus is the two-spool-versus-single-spool decision at almost the same price step. Comgrow holds two 1 kg spools in a 9 x 9.2 x 6.4 in chassis with a 40 to 50°C range. The S1 Plus holds one spool in a flatter 10.7 x 9.33 x 3.94 in chassis, publishes a 1 Year warranty, and reaches 55°C claim. Pick the S1 Plus if you only need one bay.

What temperature range should a filament dryer cover?

The temperature range a filament dryer should cover depends on your filament. PLA is happy at 40 to 50°C, PETG wants closer to 65°C, and nylon or PC needs 70 to 90°C. The entry picks in this set cap between 50 and 55°C. The SUNLU S2 reaches 70°C claim. Only the Creality Space Pi X4 at 85°C claim covers engineering filaments end to end.

Can a filament dryer replace a sealed storage box?

A filament dryer replaces a sealed storage box only while it is running. Once it powers down, ambient humidity re-enters unless the chassis stays sealed. The Polymaker Polydryer addresses this directly by pairing the dock with a sealed storage box and desiccant support. For the other picks in this set, keep a separate airtight box with desiccant for spools not currently in the machine.

If you are buying a first filament dryer this month and your queue is PLA plus the occasional PETG, the Comgrow two-spool box at 50°C is the pick that stops moisture ruining prints without stretching your spend. Order it, run every new spool through a 6 to 12 hour cycle before the first layer, and keep desiccant in your storage bin for the spools waiting their turn. If PETG is a bigger share of your queue, the SUNLU S2 at 70°C claim earns its price step. Everything above that is capacity and headroom for a queue you have not yet built.

Last updated: September 23, 2026. Product availability re-checked.

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