Step 1
Unplug and open the back.
Switch the machine off and unplug it, then push the back panel open. The carbon box slides straight out.

Easy to use
Step 1
Switch the machine off and unplug it, then push the back panel open. The carbon box slides straight out.
Step 2
Four screws and a Phillips. Lift the lid off and empty the spent carbon.
Step 3
Pour fresh carbon into both compartments, evenly. Do not pack it down and do not overfill — the lid has to screw back flat.
Step 4
Refasten the lid, slide the box back in, then reset the filter indicator: hold Mode + Pause for three seconds.
Refillable by design
Push the back panel and the box slides out. Unscrew the lid, pour in fresh carbon, screw it shut, slide it back. A screwdriver is the only tool it takes.
You refill from a bag. There is no proprietary cartridge to be discontinued, and nothing to subscribe to.
A divider splits the box into two channels, so air leaves through carbon on both sides. Fill both evenly — that is the air path the machine is built around.
90-day free return
2-year warranty
Free US shipping