The DefendAir HEPA 500 Air Scrubber/Negative Air Machine is a high
efficiency air filtration system used primarily in the water/fire
damage restoration, mold remediation, and in the dust & odor
control industries. At 500 CFM, it can filter the air over 7 times
an hour in a 20 ft x 20 ft room; removing any dust and particulate
with HEPA filtration. The unit comes standard with a Pre-Filter
& a HEPA filter. All other filters are sold separately.
Often the terms "air scrubber" and "negative air machine" are used
interchangeably. However, the two terms refer to very different
applications. An air scrubber stands alone in the center of a room
without any ducting attached. The air it filters is recirculated to
the surrounding area. An air scrubber application helps improve the
general air quality of the jobsite. A negative air machine uses
ducting to remove contaminated air from a sealed containment area.
The filtered air is exhausted outside of the containment. This
creates negative air pressure (a slight vacuum effect) inside the
containment relative to surrounding areas. A negative air machine
application helps limit the spread of contaminants to other areas
inside the structure.
Any job that involves cleanup of sewage, flood waters, mold, and/or
fire damage will generate significant amounts of particulates and
odiferous (smelly) gases. These contaminants are a direct result of
the damage itself, as well as the necessary process of treating and
cleaning damaged materials. This includes not only damage in the
occupied space, but also contaminants in wall or ceiling cavities
that may be disturbed and unknowingly introduced into the occupied
space. These contaminants can settle on carpet, upholstery,
furnishings, and other surfaces in the home.
The goal of every restoration job is to safely and efficiently
return the indoor environment to pre-loss condition for the
customer. Part of this responsibility is to address the quality of
the air inside the structure, which can be accomplished with this
machine as well as our Dri-Eaz commercial dehumidifiers & our
Dri-Eaz flood drying axial fans.
For more air cleaning options, please take a look at our complete
line of air scrubbers.
- At 500 CFM, the HEPA 500 air scrubber can filter the air over 7
times an hour in a 20 ft x 20 ft room; removing any dust and
particulate with HEPA filtration.
- Built-in Microban antimicrobial product protection to inhibit the
growth of odor and stain causing bacteria, mold and mildew in this
- Advanced filtration technology with 4 filters including the HEPA
- Daisy chain up to 3 units together off a single outlet with the
built in GFCI outlet.
- With the built in GFCI outlet, you can also add air movers &
dehumidifiers, as long as you stay under 12 total amps drawn.
- Variable CFM on each unit allows you to adjust the amount of air
scrubbed per each specific job/room need.
- Easily stackable and lightweight for storage and transport.