Merris WX-8: The Air Curtain Burner Built for Land Clearing Debris

Land clearing leaves behind a problem that doesn’t haul itself away. Branches, stumps, root balls, brush piles — the debris accumulates faster than most crews can manage it, and every load that leaves the site on a truck is money out of the job.

For contractors clearing acreage for development, agriculture, or right-of-way work, the question isn’t whether to deal with the debris. It’s how to deal with it without burning through margin in the process.

That’s the problem the Merris WX-8 was built to solve.

What Land Clearing Debris Actually Costs You

Hauling woody debris off a land clearing job isn’t just inconvenient. It’s a recurring cost that compounds over the life of a project.

A single truckload of brush and timber debris might cost $300 to $600 to haul and dump, depending on tipping fees and drive distance. On a multi-acre clearing job, that adds up to several loads per day. For a crew working a 30-day project, debris removal can quietly run into the tens of thousands before the site is clean.

Beyond the direct cost, there’s the scheduling problem. Waiting on trucks creates downtime. Material piles up in staging areas, limits equipment movement, and can delay other trades from getting on the pad. The debris problem becomes a project timeline problem.

How the Merris WX-8 Changes the Math

The WX-8 is an air curtain burner — a machine that uses a high-velocity blower to create a curtain of forced air across the top of a burn chamber. That airflow recirculates heat, drives combustion temperatures high enough to reduce large volumes of woody material efficiently, and contains smoke and particulate inside the burn zone rather than letting it drift.

The practical result: natural material that would otherwise require hauling gets reduced to a fraction of its original volume, right where the work is happening.

For a land clearing crew, that means:

• Brush and timber debris gets processed on-site as it accumulates, rather than staged for removal
• Haul truck trips drop significantly or are eliminated for woody material
• The crew keeps moving without waiting on the debris situation to resolve itself
• Ash residue is minimal and easy to manage

The WX-8 is built for the volumes that land clearing generates. It handles branches, stumps, root material, and large-diameter wood — the full range of what ends up in a debris pile when a site gets cleared.

A Real Example

A land clearing contractor came to Machinery Partner with a straightforward problem. Their crew was clearing brush, branches, and natural debris from a site and spending too much time and money managing the output. Hauling it off wasn’t sustainable at the pace they were working.

Machinery Partner matched them with the WX-8. The machine gave the crew a controlled, high-capacity way to reduce that material on-site without stopping work to manage staging or coordinate haul schedules. The burn runs while clearing continues. Debris feeds in, volume disappears, and the project keeps moving.

That’s the core value proposition: the WX-8 eliminates the debris bottleneck instead of just relocating it.

Why Air Curtain Burning vs. Grinding for This Application

The comparison between air curtain burning and grinding for land clearing debris comes down to what you’re trying to do with the material.

Grinding makes sense when the output has value — when there’s a buyer for the mulch or a use for the chips on-site. If the job produces clean, consistent wood that can be sold or spread, a grinder or tub grinder earns its keep.

But most land clearing debris isn’t clean, consistent wood. It’s a mix of stumps, root balls, dirt-contaminated material, brush, and mixed-size timber. Grinding that material is harder on equipment, produces low-value output, and still requires someone to haul the chips somewhere.

When the goal is volume reduction and keeping the site clean, air curtain burning eliminates the output entirely. No mulch to stage, no chips to haul, no buyer to coordinate. The material is gone.

For a deeper look at how the numbers compare, see our breakdown of air curtain burner ROI vs. grinders and shredders.

Permitting for Land Clearing Burns

Air curtain burners are permitted in most U.S. states for land clearing applications, and in many states they’re specifically recognized as a cleaner alternative to open pile burning. That said, permit requirements vary — some states require pre-approval for large-volume burns, and local fire authorities may have setback requirements or restrictions during drought conditions.

The WX-8’s cleaner emissions profile generally makes permitting more straightforward than open burning, but it’s worth confirming requirements before a project starts. For a full breakdown of what’s required and how Title V rules apply, see our guide on air curtain burner compliance and permits.

About the Merris WX-8

The WX-8 is the high-capacity unit in Merris’s air curtain burner lineup, purpose-built for operations that process significant volumes of natural material. Merris designs their equipment specifically for the U.S. market and the regulatory environment that comes with it.

Machinery Partner is a stocking dealer for Merris equipment in North America. If you’re evaluating the WX-8 for an upcoming land clearing project — or comparing it to other debris management options — our team can walk you through the specifics and help you understand total cost versus the alternatives.