Air stage
Stage 1
Composite air filter
Removes dust and allergens from intake air. Its own indicator on the panel tracks life; replacing it is a cover press and a swap.
Technology
Condensation, filtration, sterilization — in that order, every time.
Atmospheric water generation isn't new physics. Doing it cleanly, quietly, and repeatably in a countertop enclosure is the engineering problem the S20 was built to solve.
The cycle
Air in, drinking water out
- 01
Draw air in
A fan pulls room air across a medium-efficiency composite filter that captures dust and airborne particles before anything reaches the cold surfaces.
- 02
Cool to dew point
A piston compressor running R134a chills the evaporator below the dew point of the incoming air. Moisture condenses out as liquid water and drains into the 3.5 L collection tank.
- 03
Filter in three stages
Water is pumped through PAC, then an ultrafiltration membrane, then a carbon block cartridge — chemistry first, biology second, taste last.
- 04
Sterilize with UVC
A UVC module in the purified tank runs its own cycle on the stored 1.5 L, so water that sits is treated as carefully as water that moves.
- 05
Hold cold, dispense on demand
The ready tank is held at 10–14°C. Press and hold dispense for up to 1.2 L per minute.
Filtration train
Each cartridge has one job
Stage 2
PAC cartridge
Powdered activated carbon adsorbs chlorine, organic compounds, and chemical residues carried in by the air.
Stage 3
UF membrane
Ultrafiltration screens out bacteria, protozoa, and fine particulate without the wastewater stream that reverse osmosis produces.
Stage 4
Carbon block
A final polish for the smallest remaining particles and VOCs — the stage that decides how the water actually tastes.
UVC
The stage that treats stored water
Most countertop purifiers treat water once, on the way through. The S20 places a UVC module at the base of the purified tank so water waiting to be dispensed is continuously covered. When cleaning the tank, the manual is explicit: never submerge that module, and never use alcohol or solvent-based cleaners.
Honest expectations
Output follows the weather in your room
The rated 10 L/day figure is measured at 30°C and 80% relative humidity. That is the ceiling, not an average. The machine operates from 5–32°C and 35–90% RH, and it produces the most water between 24–29°C with humidity in the 70–80% range. Below 35% humidity the panel flashes the humidity reading and production slows considerably — which is exactly when the external-fill mode earns its place.
Best production24–29°C, 70–80% RH
Rated condition30°C, 80% RH → 10 L/day
Full operating range5–32°C, 35–90% RH
Below 35% RHHumidity display flashes; use external fill
PlacementWell-ventilated room, away from walls
ClearanceKeep 40 cm clear behind the unit
Before first power-onLet the unit stand upright for 4 hours
First tankDrain it; water after that is ready to drink