Air Scrubber Selection Guide

How to Choose the Right Air Scrubber and Negative Air Machine for Restoration

What are air scrubbers?

An air scrubber is a portable filtration system that removes particles, gasses, and/or chemicals from the air within a given area. These machines draw air in from the surrounding environment and pass it through a series of filters to remove contaminants. The size and complexity of an air scrubber system will depend on the size of the space being serviced, as well as the range, type, and size of contaminants that must be removed from the area.

Why should I use an air scrubber?

Air scrubbers are especially important on restoration jobs where airborne contaminants are present or will be created/disturbed during the restoration process, such as mold, dust, asbestos, lead, chemical fumes, etc. These hazardous particles can settle on carpet, upholstery, and furnishings, or be drawn into the HVAC system and contaminate other parts of a building.

If these contaminants are not removed, they will have a negative effect on the indoor air quality (IAQ) of the worksite. While naturally occurring particles, such as human skin cells, animal hair, and dirt, are nearly always present, toxic gasses released by sewage-borne bacteria and mold spores can cause adverse human health effects when inhaled. In short, these contaminants can compromise the quality of the entire restoration job.

Air scrubbers help protect the health of workers and building occupants by providing a clean and healthy environment. They also help protect contractors from costly liability claims resulting from damage caused by hazardous airborne materials.

What is the difference between negative air machines and air scrubber?

The terms "air scrubber" and "negative air machine" are often used interchangeably; however, the two terms refer to different applications.

An air scrubber stands alone in the center of a room with no ducting attached. The air is filtered and recirculated, greatly improving the general air quality. An air scrubber can be used as a negative air machine, but it requires ducting, a sealed housing, precise airflow adjustment, and a variable speed blower motor.

A negative air machine uses ducting to remove contaminated air from a sealed containment area. The filtered air is exhausted outside of the containment area. This creates negative air pressure (a vacuum effect), which helps limit the spread of contaminants to other areas inside the structure.

What's the difference between negative and positive air scrubbing?

Most often, contractors will use ducting and an air scrubber to create a negative pressure environment that will contain the hazardous particles within a workspace. Air will always flow from high pressure to low pressure. So, creating and maintaining a negative pressure environment will create a constant inward flow towards the air scrubber, preventing airborne contaminants and odors from escaping the workspace through any leaks or openings.

Positive air scrubbing techniques are used less often, but do have their place. In some situations, it may be necessary to protect an area from contamination. This is achieved by placing the air scrubber outside the work area and using a duct to direct the “scrubbed” air inside the desired location. This positively pressurizes the area with “scrubbed” air and prevents contaminated air from entering.

Featured Air Scrubbers

HEPA Ultimate Air 1000

The cutting edge design of the HEPA Ultimate Air 1000 Air Scrubber delivers 1,000 CFM of clean, HEPA-filtered air.

- Stainless Steel

- Compact, lightweight size allows for one person operation

- 25-foot Power Cord

- 1 Year Warranty; 100% Parts and Labor

- Power: 3.4 amps, 120 volts, 60 Hz

- Built-In Collars for Full Ducting Options

ACSI Force Air 2000 EC Air Scrubber

The Force Air 2000 EC is a powerful, full-feature, HEPA air purification and pressure control unit. With 2,000 CFM, it is among the most powerful units available and can change the air in a typical 12’x12’ room well over 100 times an hour.

The true HEPA filter removes airborne particles down to 0.3 micron in size with 99.97% efficiency. The FA2000EC is an incredibly durable and easy to operate air scrubber.

Phoenix GuardianR Pro HEPA System

The Phoenix GuardianR HEPA System offers true HEPA air filtration in a small, compact, and ultra-portable package. The unit can be set up as an air scrubber or negative air machine, delivering up to 500 CFM of filtered airflow and provides four air changes per hour on 7,500 cubic feet.

Designed to operate horizontally or vertically, the large 16-inch diameter inlet maximizes the capture zone of airborne particles. The detachable outlet duct ring makes attaching lay flat duct quick and easy, so you can deliver HEPA filtered air where you want it.

Dri-Eaz HEPA 700 Air Scrubber

The Dri-Eaz HEPA 700 Air Scrubber is designed for use in both restoration and remediation applications as well as facilities where advanced air filtration is required, such as schools, healthcare, offices, and other occupied spaces. The unit achieves up to 6 air changes per hour in 7,000 cubic foot spaces, removing dust, mold, and other particulates with its 2-inch MERV 8 pre-filter and primary HEPA filter.

Weighing in at just 42 pounds, the HEPA 700 Air Scrubber is easy to lift and transport. It is also designed to be stackable, maximizing space in your vehicle or storage area, making it a favorite among restoration contractors.

Aeroclean 2000 "ECONO" Negative Air Machine

The Aeroclean 2000 is a powerful negative air machine made from aircraft grade aluminum for reduced weight. It features a powerful motor and produces 1,950 CFM on high and 1,300 CFM on low.

The slide-down door gives you easy accessibility to internal components for maintenance or filter changes. It features four heavy-duty casters for easy mobility around the job site.

View Replacement Air Scrubber Filters