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Negative Air Machines

HEPA negative air machines and air scrubbers from Abatement Technologies for containment, asbestos, and mold abatement. Stackable units from 750 to 2,000 CFM with 3-stage HEPA filtration create negative pressure to contain airborne contaminants.

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Original price $1,133.50 - Original price $1,133.50
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Abatement Technologies H2KM Negative Air Machine – 2000 CFM, 3-Stage HEPA

Abatement Technologies
In stock

Abatement Technologies HEPA-AIRE H2KM — 2,000 CFM Negative Air Machine and Air Scrubber The Abatement Technologies HEPA-AIRE H2KM is an industrial-...

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Original price $1,133.50 - Original price $1,133.50
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Abatement Bulldog BD2KM Negative Air Machine – 2,000 CFM 2-Speed HEPA

Abatement Technologies
In stock

BD2KM Negative Air Machine — 3-Stage HEPA Containment in a Roto-Molded Cabinet The Abatement BULLDOG BD2KM is the standard model of the BULLDOG neg...

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Original price $1,247.50 - Original price $1,247.50
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Original price $1,361.00 - Original price $1,361.00
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Abatement Technologies H2KMA Deluxe Negative Air Machine – 2000 CFM, 1 HP HEPA

Abatement Technologies
In stock

H2KMA Deluxe Negative Air Machine — 2,000 CFM HEPA for Large Containment Zones The Abatement Technologies HEPA-AIRE H2KMA Deluxe is the high-capac...

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Original price $1,361.00 - Original price $1,361.00
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Abatement Technologies PRED-750 Air Scrubber – 750 CFM HEPA Negative Air Machine, Stackable

Abatement Technologies
In stock

Abatement Technologies PRED-750 Air Scrubber — 750 CFM Negative Air Machine for Mold, Asbestos, and Lead ContainmentThe Abatement Technologies PRED...

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Original price $1,133.50 - Original price $1,133.50
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Air-Care TurboMax III Negative Air Duct Cleaning Machine – 3 HP, 3500 CFM

Air-Care
In stock

TurboMax III Commercial Negative Air With Variable Speed and Dual Ammeters The TurboMax III steps a duct cleaning operation up to commercial trunk ...

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Original price $5,148.00 - Original price $5,148.00
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Original price $4,351.00 - Original price $4,351.00
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Air-Care TurboMax II Negative Air Duct Cleaning Machine – 2 HP, 2700 CFM

Air-Care
In stock

TurboMax II Portable Negative Air for Residential Duct Systems The TurboMax II holds a residential or light commercial air system under negative pr...

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Original price $4,351.00 - Original price $4,351.00
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Aerospace America 9100 Turbo Negative Air Machine – 2500 CFM, 1.75 HP, 116 lbs, SKU 9100

Aerospace America
In stock

Aerospace America 9100 Turbo Negative-Air Machine for Whole-Room ContainmentThe 9100 Turbo pulls up to 2500 CFM on high through three-stage 99.97% ...

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Original price $1,215.00 - Original price $1,215.00
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Original price $1,599.00
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Novatek Novair 1000 Standard Filter Negative Air Machine – F1205, 220V CE

Novatek
In stock

CE-Certified 220V General-Purpose Negative Air MachineThe Novatek Novair 1000 (F1205) is the CE-certified 220V variant of the F1005, providing 1000...

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Original price $1,599.00
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Novatek Novair 1000 Negative Air Machine – F1005, 1000 CFM, Standard Filter

Novatek
In stock

General-Purpose 1000 CFM Negative Air Machine for Construction and RenovationThe Novatek Novair 1000 (F1005) delivers the same 1 HP, 1000/500 CFM t...

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Original price $1,299.00
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Novatek Novair 1000 Negative Air Machine – F1000, 1000 CFM, 1 HP, HEPA

Novatek
In stock

1000 CFM Negative Air Machine for Abatement and Hazmat ContainmentThe Novatek Novair 1000 (F1000) delivers true 1000 CFM airflow with all filters i...

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Original price $1,199.00
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Original price $1,418.00 - Original price $1,418.00
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Abatement Bulldog BD2KMA Deluxe Negative Air Machine – 2,000 CFM HEPA + Pressure Gauge

Abatement Technologies
In stock

BD2KMA Deluxe Negative Air Machine — Pressure Gauge and Audible Filter Alarm The Abatement BULLDOG BD2KMA Deluxe is the monitored version of the BU...

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Original price $1,418.00 - Original price $1,418.00
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Original price $1,293.50 - Original price $1,293.50
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Abatement Technologies H1990M Negative Air Machine – 1600 CFM, 1 HP, HEPA

Abatement Technologies
In stock

H1990M Negative Air Machine — 1,600 CFM HEPA Containment in a 125-Pound Portable Unit The Abatement Technologies HEPA-AIRE H1990M is a dual-speed ...

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Original price $1,293.50 - Original price $1,293.50
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Buy Negative Air Machines for Asbestos, Mold, and ICRA Containment

Negative Air Machines at US Cleaning Tools — Picks by CFM Class

The negative air machine lineup at US Cleaning Tools spans the regulated containment spectrum, from 750 CFM single-room abatement units up through 2,500 CFM industrial-scale machines for hospital ICRA Category III/IV projects. The most-shipped unit for residential and small-commercial abatement is the Abatement Technologies Predator PRED-750 — a 750 CFM stackable HEPA negative air machine sized for single-room asbestos containments and IICRC S520 mold protocols at the 4–6 ACH minimum. Larger projects step up to the 2,000 CFM class (Abatement H2KM, BD2KM) for multi-room hospital renovations and ICRA Category III work where pressure differential must hold across longer ducted exhaust runs. Every unit ships factory-direct from US warehouses with full manufacturer warranty, pre-sale sizing support at (978) 295-7538, and 2–8 business-day standard shipping. B2B Net-30 terms are available for qualified abatement and restoration accounts.

How a Negative Air Machine Differs From a General Air Scrubber

A negative air machine pulls contaminated air from inside a sealed containment zone and discharges HEPA-filtered exhaust outside the zone, creating a measurable pressure differential that prevents particulate from migrating to adjacent occupied spaces. A general air scrubber recirculates filtered air within the same room without establishing a pressure boundary. The distinction matters under OSHA 29 CFR 1926.1101 (asbestos), EPA RRP (lead-paint renovation), and Joint Commission ICRA Category III/IV protocols, which require negative pressure documentation rather than ambient particulate reduction. Every machine in this collection is configured for ducted exhaust and meets the static pressure requirements those protocols specify.

Related: Air Scrubbers · HEPA Vacuums · Abatement Technologies · Dust Removal · Mobile Containment Cubes

Sizing by Containment Volume and Air Changes Per Hour

The CFM rating on a negative air machine determines how many air changes per hour (ACH) the machine can deliver in a given containment volume. The Abatement Technologies PRED-750 (750 CFM) handles single-room containments and small residential abatement zones at the 4–6 ACH minimum specified by IICRC S520 mold protocols. The Novatek Novair 1000 series (1,000 CFM) covers mid-size restoration containments and ICRA Category II hospital projects. The 2,000 CFM class — Abatement H2KM, H2KMA, BD2KM, and BD2KMA — handles large abatement zones, multi-room hospital renovations, and ICRA Category III projects where pressure differential must hold across longer ducted runs. The Aerospace America 9100 Turbo (2,500 CFM) is the largest unit, sized for industrial-scale abatement and large commercial restoration where a single machine handles thousands of cubic feet of containment volume. True HEPA at 99.97% capture for 0.3-micron particles is the regulated minimum; multi-stage filter stacks extend HEPA service life by capturing coarser debris before it loads the regulated-grade filter. Pressure differential should be measured continuously with a magnehelic gauge and documented at job-start, mid-shift, and job-end per OSHA and ICRA documentation requirements.

Frequently Asked Questions

What is the difference between an air scrubber and a negative air machine?
An air scrubber recirculates filtered air within a single space. A negative air machine pulls contaminated air from a sealed containment zone and discharges HEPA-filtered exhaust outside the zone, creating measurable negative pressure. OSHA 29 CFR 1926.1101, EPA RRP, and Joint Commission ICRA protocols all require negative pressure documentation — which only a negative air machine can deliver.
How many air changes per hour (ACH) do I need for asbestos or mold containment?
IICRC S520 mold remediation specifies a minimum of 4 air changes per hour in containment zones, with 6+ ACH preferred for active remediation. OSHA 29 CFR 1926.1101 asbestos work follows similar standards. To calculate required CFM, multiply containment volume (length × width × height in cubic feet) by ACH and divide by 60. A 1,500 sq ft single-story containment at 8-foot ceilings (12,000 cubic feet) requires 800 CFM minimum at 4 ACH.
What size negative air machine do I need for ICRA hospital work?
ICRA Category II adjacent-corridor hospital work typically uses 750–1,000 CFM units (PRED-750 or Novair 1000). Category III multi-room renovations with extended ducted runs use 2,000 CFM units (Abatement H2KM, BD2KM, or H2KMA). Category IV high-risk projects with redundant filtration requirements may pair two 2,000 CFM units or use the 2,500 CFM Aerospace 9100 Turbo. Verify pressure differential continuously with a magnehelic gauge during all categories.
Are these negative air machines OSHA-compliant for asbestos abatement?
Yes. Every negative air machine in this collection uses true HEPA filtration at 99.97% efficiency at 0.3 microns, which meets OSHA 29 CFR 1926.1101 asbestos containment requirements. Document filter inspection and replacement per the manufacturer schedule, log pressure differential at job-start and job-end, and ensure exhaust is ducted outside the containment per regulatory protocol.
Can a negative air machine also be used as a portable air scrubber?
Yes. Most units operate in both modes. In negative-air mode, exhaust ducts outside the containment to depressurize. In air-scrubber mode, filtered air discharges back into the room to reduce ambient particulate. The same HEPA filter handles both configurations, but only the ducted-exhaust mode satisfies regulated negative pressure requirements for asbestos, lead, and ICRA work.

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