What is another name for HEPA units?

HEPA units are more formally known as High-Efficiency Particulate Air filters, which are recognized for their ability to trap a significant percentage of very small particles, including mold spores, dust, and other allergens. The term "negative air machines" specifically refers to portable devices equipped with HEPA filters that create negative air pressure within a confined space, effectively preventing contaminants from escaping the area being worked on. These machines are essential in mold remediation and other applications where air quality control is vital.

The reason "negative air machines" is the correct identification of HEPA units lies in their functionality and typical use in environments where mold may be present. By exhausting contaminated air outside while drawing in cleaner air from the surrounding area, these machines facilitate a safer working environment.

In contrast, air conditioners primarily cool air and may not necessarily filter out fine particulate matter to the same degree as HEPA units. Humidity control devices focus on regulating moisture levels rather than air filtration. Air compressors serve to pressurize air for various tools and applications but do not play a role in air filtration specifically.