Roy
A quiet, USB-powered air purifier that just does its job. Cleaner room air from a printed object that actually looks like it belongs on the shelf — no humming appliance, no exposed electronics.
River collection
Air purifiers
Printable purifier bodies for PC-fan and filter builds: HEPA for particles, activated carbon for odors, and shells clean enough to keep in sight.
Max
The fastest River purifier to build. Snap the printed shell onto a standard PC fan, drop in the HEPA, plug into USB — your room is already cleaner.
Yomi
A flat disc you barely notice. Real airflow, quiet operation, and a soft printed silhouette that disappears into a shelf or a coffee table.
Eno
HEPA and activated carbon in one tall, calm object. The only River purifier that removes both particles and odors — for kitchens, bedrooms and any room that smells of yesterday.
Ivo
Serious airflow for a real room. River's biggest mover of clean air, in a long horizontal shape that sits naturally on a sideboard or under a TV.
Ali
A light, vertical purifier concept with a clean profile. Ali lifts the fan-and-filter layout into a slimmer upright object for desks or shelves where the purifier should look intentional from the side as well as the front.
Evo
A more evolved purifier body with a strong but simple shape. Evo gives airflow, maintenance and appearance the same priority, so the print feels polished without hiding the fan and filter logic.
Haze
A purifier design with a softer, atmospheric name and a calm visual presence. Haze is for rooms where the printed filter object should quietly do its job while still making the airflow path understandable.
Related guides
AIR PURIFIERS
How 3D printed air purifiers actually work
PC fans, HEPA or activated carbon filters, printed frames and the practical choices people ask about first.
AIR PURIFIERS
3D printed air purifier with a PC fan: what matters
Fan size, filter fit, air leaks and maintenance decide whether a printed purifier is useful or only a good-looking shell.
FILTER CHOICE
HEPA or activated carbon in a 3D printed air purifier?
Particle filters and odor media do different jobs; trust starts with forcing air through the right layer.
AIRFLOW FAQ
PC fans, filter access and smoke tests in printed purifiers
The questions makers ask first: can the fan be replaced, what does a smoke test prove, and why airflow should stay serviceable.
AIR PURIFIERS
Roy, Max, Yomi, Eno or Ivo: which River purifier should you choose?
A clear comparison of River purifier sizes and use cases, including why Max is compact despite the name and Eno is the largest.
AIR PURIFIERS
Filter access, fan access and maintenance in a printed air purifier
A purifier is not just a sculpture. The fan, filter and airflow path need to stay understandable after the print is finished.
Also from River Family
Ice air coolers
Yuki
A full-size ice-pack air cooler built from printed parts, a quiet USB fan and a frozen water pack. Freeze the pack overnight, place it inside, and Yuki sends a steady cooler stream across the desk with very low power use.
Water filters
Jem
A polypropylene tap water filter for activated carbon. The flower-like top opens for filling, the body attaches to standard taps, and the bottom grid holds carbon while water passes through. Joined G-code keeps the water path cleaner by reducing micro-stringing.