The OG Air Refiner

The OG is 21Captains' flagship Air Refiner, designed to naturally absorb excess moisture and neutralise odours in larger enclosed spaces. No power, no refills, no ongoing maintenance. It works quietly in the background for up to two years, then sun bakes back to full capacity.

Anywhere moisture and odour are a problem. The OG works in bedrooms, living spaces, walk-in robes, bathrooms, fridges and cupboards at home, and in caravans, rooftop tents, swags, 4WDs and boats out on the road or water.

Both Air Refiners do the same job. They absorb moisture and neutralise odours naturally using activated coconut-shell charcoal. The difference is size and coverage.

The OG Air Refiner is our original. Bigger, chunkier, and built for larger spaces. Think caravans, boat cabins, bedrooms, living areas, and anywhere that needs serious coverage. One OG covers approximately 15 to 20m² under normal conditions.

The Slim Air Refiner is built for tighter spaces. Narrower profile, designed to slide into drawers, wardrobes, shoe racks, fridges, canopy drawers, and anywhere the OG would not fit. Each Slim covers up to 8m². Two Slims together roughly equal one OG.

Still not sure? A good rule of thumb is this. If you can see the space clearly and it is an open room or cabin, go the OG. If you are targeting a specific enclosed spot like a drawer or a boot of a car, go the Slim. Many customers end up with both.

Covers approximately 15 to 20m² for general filtration under normal humidity conditions. Use "approximately" as the qualifier, not as a guaranteed minimum. For larger areas or high-moisture spaces, two OGs or an OG plus Slims is the right call.

Once a month, place your OG Air Refiner in direct sunlight for approximately one hour. The UV energy purges what the charcoal has been holding, restoring full absorbing capacity. Then place it back where you need it. No refills, ever.

Filled with high-quality coconut-shell activated charcoal. The outer fabric is made from recycled post-consumer plastic bottles. Every Air Refiner is handmade in our West Ipswich warehouse.

Flat rate $12 shipping Australia-wide. Orders placed before 11am AEST are dispatched same day. 30-day money back guarantee, no questions asked.