The DiFluid AirWave. All images courtesy of DiFluid.
Chinese coffee equipment and technology company DiFluid is launching a low-temperature electronic afterburner for small-scale roasters called the AirWave Smart Roasting Purifier.
Revealed to the public on March 30 at the 2025 Shanghai Coffee Expo, the AirWave aims for energy efficiency, purification performance and a compact countertop footprint. It is designed to be paired with 1-kilo-capacity or smaller roasters.
Standing 11.4 inches wide, 7.1 inches deep and 12.5 inches tall, the new machine’s purification system centers on monolithic catalytic technology, involving relatively small flow-through substrates that break down volatile organic compounds such as aldehydes and benzene at low temperatures. The result is a reduction of smoke and harmful airborne contaminants by more than 95%, according to DiFluid.
“Our smoke purifier adopts this revolutionary technology, replacing traditional triple-catalytic systems to significantly reduce size, cost and temperature requirements,” DiFluid Marketing Specialist Cheryl Chen told Daily Coffee News. “It efficiently eliminates PM and VOC while intelligently collecting chaff and coffee dust, enhancing both environmental sustainability and user experience. The catalysts are fully recyclable.”
Users can tune the AirWave’s energy consumption by manually throttling airflow and power based on what’s happening with the roast in real time. The machine also offers an automatic mode, in which a feature called OmniVision monitors air quality and feeds data to algorithms that automatically adjust the system as a roast progresses.
The machine is capable of running continuously for back-to-back roasts, and a self-cleaning mode automatically cleans the AirWave’s catalysts as well as its internal heater. The AirWave also has its own chaff collection module.
The device’s metal body is industrially recyclable, according to the company, as are its reusable and replaceable catalysts that aim to improve upon shorter-lived disposable filters found in other small smoke mitigation systems.
DiFluid was founded by Linus Peng in 2021 in Shenzhen, China, with the mission to “digitize fluid” coffee throughout the preparation process with a range of high-tech brewing and analysis tools.
That vision expanded from fluids to solids over the past two years with releases such as the Omni analyzer of roast color and ground coffee particle size, and the Omix, which gathers a range of data from both green and roasted coffees, including water activity, moisture, density, screen size, expansion rate and more.
The AirWave represents a stride further into the roasting sphere for DiFluid, and it is the company’s first purely production-oriented tool. Chen said the AirWave will soon be followed by a device that detects first crack while also tracking the changing color of coffee while roasting in real time.
While pricing for the AirWave has not yet been announced, Chen said sales will commence in the United States this month.
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Howard Bryman
Howard Bryman is the associate editor of Daily Coffee News by Roast Magazine. He is based in Portland, Oregon.
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