The Dri-Eaz DefendAir HEPA 500 is the gold standard in commercial air filtration and negative air pressure management. Trusted by restoration professionals, contractors, mold remediation companies, and commercial facility teams worldwide, the HEPA 500 sets the benchmark for reliability, filtration performance, and ease of use.

Engineered by Legend Brands under the Dri-Eaz umbrella, this unit delivers true HEPA filtration at 99.97% efficiency, removing hazardous airborne particles including mold spores, dust, smoke, bacteria, allergens, and VOCs (when equipped with an activated carbon filter).

With its rugged roto-molded housing, stackable design, variable speed control, and industry-leading airflow performance, the HEPA 500 is a must-have for any professional working in contaminated or dust-heavy environments.

🔧 Engineered for Demanding Environments

The DefendAir HEPA 500 is built to outperform in the toughest job conditions:

• Mold remediation (IICRC S520 compliant)
• Water damage restoration
• Construction dust control
• Fire & smoke cleanup
• Sewage/black water remediation
• Healthcare & infection control
• Industrial facilities
• Schools & government buildings

Its durable construction ensures it withstands daily transportation, harsh job sites, and continuous 24/7 operation.

🌬 Powerful 500 CFM Airflow (Variable Speed)

The HEPA 500 offers up to 500 cubic feet per minute of air movement, ensuring fast air cleaning and proper air exchanges per hour.

Use cases:

• High speed for large rooms or heavy contamination
• Low speed for sound-sensitive areas or continuous purification

The variable speed dial allows precise control of airflow for any environment.

🛡 True HEPA 99.97% Filtration

The filtration system includes:

• Stage 1: Pre-Filter (captures large particles, extends HEPA life)
• Stage 2: True HEPA Filter (captures particles ≥ 0.3 microns)
• Optional Stage 3: Activated Carbon Filter (odor, chemical, VOC removal)

This makes the HEPA 500 fully compliant with:

• Mold remediation job standards
• Asbestos containment (with proper configuration)
• Fire and smoke restoration
• Odor control

🧩 Modular & Stackable Design

Professional contractors love the HEPA 500 because:

• Up to 2 units can be stacked for transport
• Lightweight for a commercial scrubber (39 lbs)
• Compact footprint fits tight spaces
• Rotomolded housing resists cracks and job-site abuse

This design improves crew efficiency and lowers equipment downtime.

⚙️ Negative Air Machine Ready (NEM Compliant)

By attaching flexible ducting, the HEPA 500 becomes a fully functional negative air machine capable of creating negative pressure in:

• Containment zones
• Mold remediation chambers
• Construction dust enclosures
• Healthcare isolation areas

It’s extremely versatile — a single unit can serve multiple functions for any restoration company.

🧼 Easy Maintenance

Filtration changes are simple, fast, and clean.
Pre-filters typically last 3–7 days on a job, while the HEPA core can last months depending on job intensity.

Contractors appreciate:

• Tool-free access
• Easy pre-filter swaps
• Long HEPA lifespan
• Straightforward maintenance

🛡 Why Restoration Companies Keep Buying It

• National brand recognition
• Low failure rates
• Trusted by insurance carriers
• Industry-wide compatibility
• Easily stacks with existing equipment
• Lower cost of ownership vs. knockoff brands

📊 Technical Specifications

• Airflow: 500 CFM (variable)
• Filtration: 2-stage + optional carbon
• Efficiency: 99.97% @ 0.3 microns
• Duct Size: 12-inch intake & exhaust
• Dimensions: 17” × 26” × 18”
• Weight: 39 lbs
• Power: 115V / 2.5A
• Cord Length: 25 ft
• dB Rating: 69 dB @ max
• Warranty: 1-year manufacturer warranty