SUNLU S2 or Sovol SH02: which filament dryer is the smarter buy?

Display / screen quality

Winner: Sovol SH02

This is one of the clearest differences in day-to-day use. The Sovol SH02 comes with a touch screen and one-key set operation, which makes it feel more modern and easier to use. If you regularly switch between materials or want to set a drying temp and timer quickly, the SH02’s interface is likely to be less fiddly.

The SUNLU S2 is more basic in this area. It gets the job done, but the product positioning suggests a simpler control experience rather than a premium interface. For people who want convenience and a more polished feel, Sovol takes this round.

Performance

Winner: Tie, with a slight edge to SUNLU for heat distribution

On paper, both units are built for the same job: drying common filaments like PLA, PETG, TPU, ABS, PA, and PC. The SUNLU S2 advertises 360° all-round heating and a 70°C max temperature, which is a strong sign that it’s designed to heat the chamber evenly. That kind of all-round airflow and heat distribution matters when you want consistent drying across the whole spool, not just the outer layers.

The Sovol SH02 uses a PTC heater, which is a solid approach for safe, self-regulating heat delivery. PTC systems are generally well-liked because they’re efficient and stable. In practical terms, both should handle everyday moisture issues well, but the SUNLU’s 360° heating claim gives it a slight advantage for even drying, especially if you’re dealing with larger or more stubborn spools.

Build quality and design

Winner: Sovol SH02

The Sovol SH02 is described as a sealed storage box and spool holder, which gives it a more all-in-one, purpose-built feel. That sealed design is useful because drying is only half the battle; keeping filament dry afterwards matters just as much. If you want a unit that can act as both dryer and storage box, Sovol has the more versatile design.

The SUNLU S2 is a straightforward dryer box with fan-assisted heating. It’s a proven, no-nonsense design and SUNLU has a strong reputation in the filament accessory space. Still, the Sovol sounds more refined from a usability standpoint, especially if you want a cleaner integrated setup on the bench.

Battery life

Winner: Tie / not applicable

Neither of these products is battery-powered, so this category doesn’t really apply. Both are mains-powered filament dryers, so there’s no portability advantage here. If you were hoping for a cordless or carry-anywhere solution, neither is that product.

Price and value for money

Winner: SUNLU S2

This is where the SUNLU S2 pulls ahead decisively. At £44.99, it’s £15 cheaper than the Sovol SH02 at £59.99. That’s a meaningful difference for what is, at its core, a utility accessory rather than a flashy upgrade.

The SUNLU also has slightly stronger social proof in the form of a 4.4/5 rating from 671 reviews, compared with Sovol’s 4.3/5 from 687 reviews. Both are well-reviewed and broadly trusted, but the SUNLU’s lower price plus marginally better rating makes it the better value buy for most people. If you want to solve damp filament without spending more than necessary, SUNLU is the smarter spend.

Game library / features

Winner: Sovol SH02

For a filament dryer, this category translates to features and flexibility rather than actual games. The Sovol SH02 wins because it offers a touch screen, one-key set controls, sealed storage box functionality, and compatibility with both 1.75mm and 2.85mm filament. That broader compatibility and more user-friendly control system make it feel more feature-rich.

The SUNLU S2 is still well equipped, with fan-assisted 360° heating and support for PLA, PETG, TPU, ABS, PA, and PC, but it’s the more basic option. If you want extra convenience features and a more premium interface, Sovol has the edge.

Overall user experience

Winner: SUNLU S2 for most buyers, Sovol SH02 for convenience-first users

In real-world use, the SUNLU S2 is the better buy for most makers because it delivers the core job at a lower price. It has a strong rating, broad filament support, and a 70°C max temperature, all while costing £15 less. For the majority of hobbyists, that’s the sweet spot: reliable drying without paying extra for features you may not actually need.

The Sovol SH02 is the better choice if you value a nicer interface, sealed storage, and a more feature-rich setup. It feels like the more premium product, and the touch screen will appeal to anyone who hates clunky button menus. But unless those extras matter to you every time you use it, the price premium is hard to justify.

Overall summary: the SUNLU S2 wins on value, while the Sovol SH02 wins on features and convenience. If you want the best all-round buy for most 3D printing setups, go SUNLU. If you want the more polished, easier-to-use unit and don’t mind paying more, Sovol is the nicer box.