2017 AirBurner S220

Air Burners S220 FireBox Air Curtain Burner
The S220 is the mid-size FireBox in the Air Burners range — sized for contractors who clear land every week but don't need disaster-response capacity. It shows up on one trailer as a single finished unit: nothing to bolt together, no pit to dig. Set it on its skids where the debris is, light it, and start feeding it the same day it lands.
What makes it work is the curtain. A PTO-driven fan pushes a fast sheet of air across the open top of the box, so the smoke and sparks that would drift off an ordinary burn pile get knocked back down into the flames and burned a second time. The firebox walls are refractory panels four inches thick, holding the heat in the box where it does the work. Feed it with an excavator or loader; at the end of the job, open the two full-height rear doors and rake out what's left — only a couple of percent of the weight you put in, as ash and char.
Why contractors run the S220
• The disposal happens where the trees fall. No convoy of trucks running to the landfill, no tipping fee on every load, no drivers tied up hauling brush. On jobs far from a disposal site, that's where this machine pays for itself.
• It eats green wood. Fresh-cut limbs, trunks, brush, and stumps go in as they come down — no waiting for material to dry, no chipping step first.
• Running costs stay small. Around two gallons of diesel an hour, and the wood itself supplies the rest of the energy. The 49 HP Hatz diesel is EPA Tier 4 Final and doesn't need DEF.
• Built for the permit conversation. The S220 is built around the federal air-curtain incinerator rules (EPA 40 CFR 60), and Air Burners units have been tested by federal agencies including the EPA and the U.S. Forest Service — which helps when a permit office starts asking questions.
• Honest planning numbers. The factory rates it at 5–7 tons per hour. On typical clearing debris, plan around 20 loose cubic yards an hour and you'll be close.
• A permanent-site option. If the machine never needs to move, the electric-drive S220E covers stationary installations.