☣️ Buy H-Class Vacuum Cleaners & Hazardous Dust Extractors

An H-Class (High Hazard) vacuum is not just a standard machine with a HEPA filter.To be certified, the entire unit must be individually tested and proven to have a filtration efficiency of 99.995% or higher.It must also feature specialised safety components such as a fully sealed chassis to prevent dust leaks, an airflow sensor with an audible alarm, and a secure waste disposal system that prevents user exposure during bag changes.

A DOP (Dispersed Oil Particulate) Test is a highly technical procedure where a safe "smoke" is injected into the vacuum to check for leaks in the seals or the HEPA filter.

• Frequency: For H-Class vacuums used with asbestos, a DOP test is required every 6 to 12 months, or anytime the machine has been dropped or damaged.
• Certification: As UK Specialists, we ensure our H-Class range is ready for site-work upon purchase and can advise on local testing partners to keep your certification valid.

No. Under HSE guidelines, domestic or standard commercial vacuums (even those with "HEPA" filters) are strictly prohibited for use with asbestos or carcinogenic dusts.These machines are not airtight; hazardous fibres can bypass the filter or escape through the casing and be blown back into the air. H-Class machines like the Numatic HZ or Nilfisk Attix are the only legally compliant option for high-risk materials.

To meet the BS EN 60335-2-69 standard, an H-Class machine must include:

1. Airflow Monitoring: An alarm that sounds if suction falls below 20m/s (indicating a clog or leak).
2. H14 HEPA Filtration: The highest grade of filter capable of trapping microscopic fibres.
3. Sealing Caps: A cap for the hose inlet to prevent dust from escaping during transport.
4. Anti-Static Hoses: To prevent dust ignition and static shocks during use.

While M-Class is the minimum requirement for silica dust, many UK contractors now upgrade to H-Class for masonry and concrete grinding. Because silica dust (RCS) is carcinogenic, using an H-Class machine provides a higher "Safety Margin" and ensures maximum protection for the operator beyond the legal minimum.