"An industrial-scale humidifier that trades filtration for raw, unpurified output."
The 1800mL/h output means it can release nearly half a gallon of water into the air every hour. This is sufficient to humidify a large open-plan living area or workshop, but the 3000 sq.ft. claim assumes ideal conditions without significant air exchange or HVAC operation.
This is a viable option for humidifying a large, specific area like a greenhouse, a wood workshop, or an instrument storage room where massive output is the priority. The buyer must be prepared to use gallons of distilled water to prevent mineral dust.
Anyone seeking a general-purpose, low-maintenance humidifier for their home should look elsewhere. The requirement for distilled water is a significant hidden operational cost, and the large, standing water volume is a breeding ground for biofilm if not cleaned meticulously.