SUNLU S1 or Sovol SH01: which filament dryer is the smarter buy?

Price and value for money

Product A, the SUNLU S1, is the clear value winner at £29.99 versus £41.99 for the Sovol SH01. That’s a £12 saving, which is a meaningful chunk in this category and enough to cover a decent spool of filament or part of a nozzle-and-maintenance refresh. With a stronger rating too, 4.5/5 from 2,989 reviews compared with 4.2/5 from 2,517 reviews, SUNLU looks like the more proven purchase. Winner: Product A.

User confidence and real-world reputation

On paper, both have thousands of reviews, which is a good sign that neither is some fly-by-night gadget. But SUNLU’s higher average rating and larger review count suggest a more consistently positive experience across a bigger pool of buyers. For makers, that usually matters more than brand hype: it means fewer surprises, fewer returns, and a better chance the box does what it says on the tin. Winner: Product A.

Compatibility and filament support

This is effectively a draw on the headline spec, because both are designed for common hobbyist filament sizes and materials. Product A supports 1.75mm, 2.85mm, and 3.00mm filament, while Product B supports 1.75mm and 2.85mm and is marketed for PLA, PETG, TPU, and ABS. In practical terms, both cover the mainstream printer world, but SUNLU has the edge if you use 3.00mm filament or want broader size compatibility. Winner: Product A.

Build quality and design

Without getting into lab testing, the best clue we have is the market response: SUNLU’s stronger rating suggests users are generally happier with the fit, finish, and day-to-day usability. Sovol SH01 is still a legitimate product, and Sovol has a decent reputation in the maker space, but its lower rating hints at more mixed experiences. For a filament dryer, design matters in boring but important ways: spool loading, lid sealing, cable routing, and whether it feels like a tidy bit of kit or a compromise. Based on the data provided, SUNLU appears to have the better execution overall. Winner: Product A.

Performance

Both products are meant to solve the same problem: reduce moisture in filament so your prints come out cleaner and more reliable. That matters especially for hygroscopic materials like TPU, PETG, and ABS, where damp filament can cause stringing, bubbles, weak layers, and ugly surface finish. Since neither product’s detailed temperature curve or airflow spec is provided here, we can’t honestly claim one dries faster from the listed data alone. However, the stronger user rating for SUNLU suggests it likely delivers more consistently in real-world use. Winner: Product A.

Display/screen quality

No display specification is provided for either model, so there’s no reliable basis to call a winner on screen quality alone. In this category, the best honest answer is a tie. If one unit has a clearer, easier-to-read interface in practice, that would matter, but it isn’t supported by the information here. Winner: tie.

Battery life

Neither product is battery-powered in the usual sense; these are mains-powered filament dryers rather than portable gadgets. So battery life is not a meaningful comparison point here. If you were hoping for cordless operation, neither is really that kind of product. Winner: tie.

Game library/features

There is no game library on either product, because these are filament dryers, not handheld consoles. If we translate this into maker terms, the relevant “features” are things like spool compatibility, drying capability, and whether it doubles as a storage box or spool holder. On those practical features, SUNLU has the better compatibility range thanks to 3.00mm support, while Sovol’s material list is useful but not enough to outweigh the price gap. Winner: Product A.

Overall user experience

For most 3D printing users, the better experience is the one that is simple, dependable, and doesn’t cost more than it should. SUNLU scores well here because it has the lower price, the higher rating, and the larger review base. That combination is exactly what you want when buying a utility accessory: less faff, less risk, and more confidence that it’ll do the job on PLA, PETG, TPU, or ABS when the weather turns damp and the filament starts acting up. Sovol SH01 may still be a solid option, but at £12 more it needs a stronger advantage than the data shows. Winner: Product A.

Overall summary: SUNLU S1 is the better buy for most people. It’s cheaper, better reviewed, supported by a larger number of buyers, and offers broader filament size compatibility. The Sovol SH01 is not a bad product, but unless you have a specific reason to prefer it, the SUNLU gives you the stronger mix of confidence and value.