Numatic HZ900 H-Class Single Motor Industrial Hazardous Dust Extractor
Numatic HZ900 H-Class Single Motor Industrial Hazardous Dust Extractor - 240 Volt (Standard Plug) is backordered and will ship as soon as it is back in stock.
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Numatic HZ900 H-Class Single Motor Industrial Hazardous Dust Extractor
When dealing with high-volume, high-risk, or health-endangering dust, safety and capacity are non-negotiable. The Numatic HZ900 H-Class Single Motor Industrial Hazardous Dust Extractor is specifically engineered and certified to meet the most stringent safety standards (IEC/EN 60335-2-69), providing a massive 40-litre collection capacity for the absolute containment and safe disposal of large quantities of highly hazardous material.
Available in 240Volt and 110Volt. Please select your preferred operating voltage.
HZ900 Core Features & Unrivalled H-Class Filtration
The Numatic HZ900 is built with a sophisticated, triple-stage sealed system that achieves the highest standard of filtration required by law for dangerous dusts, paired with an industrial-sized drum for maximum productivity.
1. H-Class Certified Filtration (99.995% Efficiency)
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HEPA H13 Filter Module: The heart of the machine is a large-area, highly efficient HEPA H13 cartridge filter securely mounted in an all-steel module. This system ensures 99.995% filtration efficiency down to 0.3 microns, meeting the legal requirements for H-Class certification.
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Triple-Stage Containment: Filtration consists of: 1) HepaFlo Dust Bag NVM-4BH (Primary high-capacity containment); 2) Large Surface TriTex Filter (Protects the main HEPA module); and 3) HEPA H13 Filter (Final absolute filtration).
2. Built for Industrial Durability
- Robust All-Steel Head: The power head is constructed from durable all-steel for industrial longevity, while the massive 40L drum utilises Structofoam to withstand the toughest site conditions without denting or rusting.
- Massive 40L Capacity: The large "900" size offers a substantial 40-litre capacity, allowing for significantly extended use before emptying—essential for high-volume tasks like chimney sweeping or large-scale remediation.
- Powerful 960W Motor: The long-life, professional TwinFlo motor provides powerful, consistent suction (48 L/sec airflow) necessary for extracting heavy, fine, and hazardous dust from industrial surfaces.
- ⚡ Need more power? If you are using exceptionally long hose extensions (over 10m) or extracting heavy, dense debris, we recommend the Numatic HZD900 Twin Motor Industrial Hazardous Dust Extractor. It features dual 960W motors for maximum suction lift and 80 L/sec airflow.
- NuCable System: Features a plugged, replaceable power cable (10m) that can be swapped out quickly on-site, minimising downtime and maintenance costs.
3. Safety & Compliance Features
- Safe Emptying: Designed exclusively for use with large-capacity, triple-layer HepaFlo Filter Bags (NVM-4BH)which can be sealed shut, guaranteeing clean and safe disposal of hazardous waste without exposing the operator.
- Safe Containment: The vacuum comes equipped with screw-on dust caps for both the drum and the head. These caps enable the vacuum to be securely sealed during transport, effectively preventing any hazardous materials from escaping the device.
- Certified Documentation Provided: Each machine includes official H-Class HEPA certification, which confirms compliance and ensures the integrity of the filtration system for your health and safety records.
- Site Compliance: Ensuring complete compliance with EN 60335-2-69 (Annex AA) standards for managing high-risk hazardous dust.
The Numatic HZ900 is not a general-purpose vacuum; it is a specialised piece of Personal Protective Equipment (PPE) designed to ensure regulatory compliance and safeguard operator health when dealing with high volumes of toxic materials.
🏭 Where the Numatic HZ900 Can Be Used (Applications)
The HZ900’s H-Class certification and 40L capacity make it legally mandatory and operationally superior in environments where high-risk dusts are generated in bulk.
- Chimney Sweeping & Flue Maintenance: The industry standard for professional sweeps, providing the massive capacity required for hazardous soot, creosote, and fine ash collection.
- Construction & Demolition: Essential for post-abatement cleanup, localized extraction when breaking or cutting hazardous masonry, and site-wide silica dust control.
- Building Restoration & Remediation: Large-scale cleanup of lead paint residue, mould remediation, and high-volume asbestos cleanup projects in industrial or residential settings.
- Workshops & Manufacturing: Effective for vacuuming finely divided metallic dusts (e.g., Nickel, Chromium), chemical processing powders, or high volumes of MDF and hardwood dust.
- Healthcare & Laboratory Maintenance: Safe cleaning in older facilities where legacy materials like asbestos pipe lagging are present, or for biohazard and pathogenic dust containment.
- Education & Public Sector: General maintenance and cleanup in older school or university buildings where legacy lead paint or asbestos risks are prevalent.
☣️ What Material the HZ900 is Certified to Collect
The HZ900 is certified to capture dusts with a Workplace Exposure Limit (WEL) of <0.1 mg/m³, which is the criterion for H-Class (High-Hazard) classification.
High-Hazard (H-Class) Materials
- Asbestos: Fibres released during removal, abatement, or disturbance of legacy materials (e.g., insulation, pipe lagging).
- Soot & Creosote: Hazardous carbon deposits and fine ash from chimneys and flues.
- Lead Dust: From sanding or disturbing old lead-based paint on large industrial surfaces.
- Carcinogenic & Toxic Dusts: Including Mould Spores, Formaldehyde, Nickel, and Tar.
- Pathogenic Dusts: Safe containment of bacteria and viruses in clinical environments.
Medium-Hazard (M-Class) Materials
- Respirable Crystalline Silica (RCS): Released from cutting, grinding, or breaking Concrete, Brick, Grout, and Stone.
- Hardwood Dust: Dust generated from Oak, Beech, or MDF.
- Plaster and Gypsum Dust.
📦 What Accessories Are Included with the HZ900?
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AA20 Industrial Accessory Kit: The vacuum comes equipped with a comprehensive 38mm industrial kit, including a 2.4m Nuflex threaded hose, stainless steel tubes, a 400mm floor tool, and specialist dusting/crevice nozzles.
💡 Why Purchase the Numatic HZ900
The decision to purchase an H-Class machine is driven by legal compliance, operator safety, and risk mitigation.
- Legal Compliance (COSHH): Meets the minimum legal requirement advised by the HSE for handling high-risk dusts under COSHH regulations.
- Absolute Containment: The sealed system guarantees that 99.995% of particles are trapped, preventing harmful recirculation back into the work environment.
- Worker Protection: Fundamentally reduces the risk of long-term operator health issues by removing harmful airborne particles at the source.

Understanding H-Class Vacuum Cleaners: Safety & Compliance Explained
In industrial and specialist environments where dust is not just a nuisance but a life-threatening hazard—such as asbestos removal, lead abatement, or pharmaceutical manufacturing—even M-Class equipment is not enough. For the most dangerous airborne particles, H-Class vacuum cleaners are the only legally compliant and safe solution.
What is an H-Class Vacuum Cleaner?
H-Class (High-Hazard Class) is the highest international safety standard for professional dust extraction. While M-Class vacuums are designed for medium-risk dusts, H-Class machines are engineered to contain highly carcinogenic, pathogenic, and toxic materials.
A vacuum certified to H-Class standards is guaranteed to capture at least 99.995% of the dust it processes. These machines utilize HEPA H14 filtration (the highest grade) and are built with fully sealed chassis. Unlike standard vacuums, every H-Class unit is individually tested and certified to ensure no hazardous fibres can bypass the filter or leak through the casing.
Why Are H-Class Vacuums Important?
When dealing with "High-Hazard" materials, the margin for error is zero. Using H-Class equipment is a mandatory requirement for specialized sectors:
- Maximum Health Protection: H-Class vacuums are designed to trap microscopic particles like asbestos fibres and lead dust, which can cause terminal illnesses such as mesothelioma, lung cancer, and systemic poisoning.
- Legal Compliance (COSHH & HSE): In the UK, the Health and Safety Executive (HSE) and COSHH regulations mandate H-Class extraction for any material with a Workplace Exposure Limit (WEL) of less than 0.1 mg/m³. Failure to use certified equipment can lead to massive fines, site closures, and legal prosecution.
- Strict Containment & Disposal: H-Class vacuums feature "low-dust" or "dust-free" bag change systems. This ensures that when the vacuum is full, workers are not exposed to a "dust cloud" during disposal—a common failure point in lesser machines.
- Acoustic & Visual Safety Alarms: To comply with BS EN 60335-2-69, these machines include integrated sensors that trigger an audible alarm if the airflow drops below 20m/s, alerting the operator to a blockage or filter saturation immediately.
Materials Requiring H-Class Collection
H-Class vacuums are required for dusts contaminated with carcinogens, pathogens, or toxic substances where the exposure limit is extremely low.
| Material Type | Common Sources & Hazards |
| Asbestos | Licensed and non-licensed removal of lagging, floor tiles, and textured coatings. |
| Lead Dust | Stripping lead-based paints, renovation of heritage buildings, or firing range maintenance. |
| Silica (RCS) | High-intensity grinding or cutting of stone and concrete (where H-Class provides a higher safety margin than M-Class). |
| Carcinogenic Dusts | Processing of materials containing bitumen, tar, nickel, cobalt, copper, or cadmium. |
| Pathogenic Hazards | Mould spores, bacteria, germs, and pharmaceutical waste in lab or clinical settings. |
| Highly Toxic Finishes | Sanding of certain chemical-heavy coatings, resins, and formaldehyde-based materials. |
⚠️ Important Safety Note: H-Class Compliance
H-Class extraction is a life-safety requirement. Because exposure to toxic, carcinogenic, or pathogenic dusts (such as asbestos or respirable crystalline silica) can lead to fatal respiratory diseases, a formal COSHH Risk Assessment must be conducted to determine the correct filtration level for your specific materials.
Standard industrial vacuums are not sufficient for high-hazard environments. For official UK guidance on the selection and use of H-Class equipment, please refer to the HSE Usin a H-Class Vacuum Cleaner page.
The MK Floortec Standard
At MK Floortec, we understand that H-Class compliance is about more than just a filter—it’s about a complete safety system. Our H-Class range, featuring industry-leading models from Numatic and Nilfisk, includes:
- Individually Certified Units: Documentation provided to prove site-readiness.
- Sealed HEPA H14 Filtration: Capturing 99.995% of all particles.
- Secure Inlet Caps: To prevent dust escaping during transport.
Investing in an H-Class dust extractor is the ultimate commitment to the safety of your workforce and the integrity of your business.

- All orders with a value of above £99 including VAT will be shipped FREE.
- Orders amounting to less than £99 including VAT, will incur our standard delivery charge of £4.99.
- Products marked as in stock on our online store will be dispatched either on the same day or the next working day following order confirmation. Customers can anticipate delivery within 1 to 4 working days.
- Larger Items may have a longer delivery schedule. This will be displayed under the product price. This is an estimated timeframe.
- Orders placed after 12 noon on Fridays will not be dispatched until the following Monday. We currently provide delivery to addresses in mainland England and Wales ONLY and we DO NOT ship outside of the UK.
Read our full delivery and shipping policies with more information HERE
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H-Class: Absolute Filtration









