NOx Filters for Indoor Air Quality

AAC Eurovent is a market leader in NOx filter technology. AAC Nitrosorb NOx filters are designed to deliver maximum NO and NO2 reduction. These high-efficiency NOx filters provide the ideal solution to the UK Building Services market for indoor air quality projects in residential, commercial and educational schemes.

Air Pollution and the Impact of the Legislation on the UK Construction Industry

The European Union Air Quality and Clean Air for Europe Directive 2008/50/EC stipulates that indoor Nitrogen Dioxide must not exceed the concentration level of 4Oug/m3.

This legislation has significant implications for planners, developers and mechanical consultants who are involved in new build and retrofit projects in the residential, educational and commercial sectors. To comply with this legislation, developers must include NOx filtration in their design.

Areas that exceed 4Oug/m3 are designated as Air Quality Management Areas by local authorities.

AAC Nitrosorb® NOx Filters

Our NOx filters use cutting-edge Nitrosorb carbon filter technology to deliver high efficiency and a sustainable range of standard and customised NO and NO2 reduction solutions.

  • Compliant with the CAFE Directive 2008/50/EC
  • High-performance MCERTS tested NOx mitigation systems
  • Accepted as a NO2 mitigation measure by Planning Authorities
  • Routinely specified by Mechanical Consultants

AAC Nitrosorb® filters are widely specified in Residential, Hotel and Student Accommodation schemes, both new build and retrofit and are accepted by Planning Authorities in Air Quality Management Areas, UK wide.

Further Information
Call us on 0800 999 4884
Nitrosorb Products & Typical Applications
AAC Nitrosorb NOxBox®

• Budget Hotels
• Residential Accommodation

• Student Accommodation

 AAC Nitrosorb Swiftpack®

• Hotels
• Offices

• Universities / Schools / Colleges
• Museums, Libraries & Galleries

AAC Nitrosorb Swiftkit Filter System®

• Hotels
• Offices
• Universities / Schools / Colleges
• Museums, Libraries & Galleries

AAC Nitrosorb Skeleton Frame® Filter System

• Hotels
• Offices
• Universities / Schools / Colleges
• Museums, Libraries & Galleries


Key Features
  • Plastic refillable filter system
  • Suitable for flow rates between 8l/s and 8,000l/s
  • G3 particulate filter fitted as standard
  • Optional PM10 or PM2.5 particulate filters can be fitted to comply with the particulate aspect of the legislation
  • Smart remote system monitoring available
Key Benefits
  • Fully sustainable replacement cell filter system
  • Suitable for use with the AAC Colourcell Media Filter System
  • Units meet the low-pressure drop requirements under part F of the Building Regulations
  • Suitable for use in Mechanical Ventilation Heat Recovery Units and Air Handling Units
  • A range of standard flow rates and sizes is available, along with a custom design service if required
AAC Nitrosorb® Filter Systems With Colourcell

All AAC Nitrosorb products are suitable for use with the AAC Colourcell Media® Filter System.  This unique cost and time-saving solution give maintenance staff an important visual, first-stage analysis of the condition of installed Nitrosorb® media and when it may require to be replaced.

Media Testing & Replacement Service

We offer a Nitrosorb media testing service, with some services being available free of charge – subject to certain terms and conditions. media testing can take various forms ranging from C.T.C (Carbon Tetrachloride Testing) analysis, R.C.T Testing (Residual Capacity Testing), Diffusion Tubes, AAC Colourcell® and Corrosion Coupons.

We also provide a fast turnaround Nitrosorb media replacement service.

Media Disposal

Following the replacement of  Nitrosorb media, we can arrange for the disposal of the spent media by an approved disposal company.

This popular service enables clients to be free from any direct involvement in the organisation and logistics of the spent Nitrosorb media disposal.


A certificate of safe disposal is available for our clients records

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