Safer and more airtight than others

Guaranteed HEPA filter efficiency through filter test according to DIN EN ISO 14644-3 once assembled. Complete testing of functionality before delivery incl. certificates.

Quieter than other units

Premium sound insulation with extremely low operating noise under normal load.

Developed with the filter know-how from pharmaceutical industry and made in Germany

Configured and set up by Cleanroom technicians on site.

Up to 10,000 times


The RoomGuard® is a mobile room filter whose filter system is highly effective in reducing particles and aerosols in closed rooms. RoomGuard® produces clean, germ and virus-reduced air in which the risk of disease transmission is reduced to a minimum.

No RoomGuard® leaves production in Germany without a 100 percent functional test. CleanroomTechnology’s entire know-how in engineering, design, construction, measurement and monitoring of cleanrooms has been incorporated into the development of the RoomGuard®.

Whether in waiting rooms, offices, schools, restaurants, meeting rooms or classrooms:

RoomGuard® reduces aerosols and viruses in closed rooms by up to 99.995% (behind the HEPA filter).

Case Studies

St. Ursula Grammar school in Aachen

St. Ursula Grammar school in Aachen

23. March 2021
During the winter semester 2020 the pandemic posed great challenges for schools in particular. In
Vaccination centre – ICE RINK Aachen

Vaccination centre – ICE RINK Aachen

23. March 2021
The StädteRegion Aachen relies on the effect of the RoomGuard for equipping the vaccination centre


We are more than happy to inform you about prices, technologies, and customisation options.

Contact details

NT Ingenieurbüro GmbH

Carl-Zeiss-Str. 25
52477 Alsdorf


Your contact person

Achim Thelen

Achim Thelen CEO

Write an email Management