Metabo ASR35 ACP Vacuum Cleaner (10.5 Amp, HEPA Filter)

How does the auto clean filter technology work?

The system monitors airflow continuously and automatically vibrates the filter cassettes when restriction is detected. This mechanical cleaning action removes accumulated dust without stopping work or losing significant suction power. The cleaning cycle can run every 30 minutes during heavy dust extraction, compared to manual systems requiring frequent stops for filter maintenance.

What makes this vacuum suitable for concrete and silica dust?

The dual-stage filtration system combines large-area polyester cassettes with HEPA filtration to capture fine concrete and silica particles effectively. The auto clean technology prevents filter clogging that typically occurs within 40 minutes when extracting fine dust. This allows 8+ hours of continuous concrete grinding without manual filter cleaning or suction power loss.

Can this vacuum connect directly to power tools?

Yes, the integrated power socket provides automatic start/stop functionality for connected tools up to the vacuum's amperage rating. When you activate a connected grinder or saw, the vacuum starts immediately. Current control technology prevents circuit breaker trips whilst maintaining maximum suction power for effective dust extraction during tool operation.

What's the difference between wet and dry operation?

For dry operation, install the polyester filter cassettes and HEPA filter for maximum dust capture. When vacuuming liquids, remove the filters and use only the collection bag. The automatic shut-down system monitors liquid levels and stops operation before overflow occurs. The 35-litre capacity handles substantial liquid volumes before requiring emptying.

How often do the filters need replacement?

Filter lifespan depends on usage intensity and dust type. The auto clean system extends filter life significantly by preventing permanent clogging. Polyester cassettes are washable and reusable multiple times before replacement. HEPA filters should be replaced when suction power decreases noticeably even after auto cleaning cycles, typically after several months of regular commercial use.

Is this vacuum suitable for home DIY projects?

Whilst designed for commercial applications, this vacuum excels at demanding DIY projects involving concrete cutting, tile removal, or workshop cleanup. The auto clean feature eliminates the frustration of frequent filter maintenance during dusty projects. However, the professional-grade price point and 16kg weight may be excessive for light household cleaning tasks.

What accessories are included with the vacuum?

The package includes a suction hose, PVC collection bag, HEPA filter, standard filter and pleated polyester filter cassettes. Additional accessories like extension wands, floor tools and specialised nozzles are available separately. The antistatic hose and accessories prevent static buildup when working with sensitive materials or in explosive atmospheres.

How does this compare to other professional vacuums?

Customer feedback indicates superior suction retention compared to Makita units and better auto clean performance than Festool models. The filter vibration system maintains airflow better than reverse-airflow cleaning systems. Whilst heavier than some competitors, the robust construction and consistent performance justify the weight for professional applications requiring reliable dust extraction.