European Standard EN13779: The Link between Outdoor Air Quality and Indoor Air Quality
EN13779 is the nearest thing to an IAQ standard, with built-in recommendations for outdoor air and indoor air which can include particulate and molecular filtration. As a relatively new standard for ventilation and room conditioning systems in non-residential buildings, EN 13779 is now a legally accepted standard in all EC member states. The standard sets out to achieve a comfortable and healthy indoor air quality in all seasons of the year at acceptable installation and operating costs, taking into consideration the outdoor air. This represents a major step forward, recognizing the importance of external air in achieving better indoor air quality and/or a healther environment .
Categories of Outdoor Air According to EN13779
| Category | Description | Location |
| ODA 1 | Pure air which may be only temporarily dusty e.g. pollen | Rural areas or sparsely populated villages |
| ODA 2 | Outdoor air with high concentrations of gaseous pollutants and particulate matter | Larger town with industry and polluted city center |
| ODA 3 | Outdoor air with very high concentrations of gaseous pollutants and particulate matter | Larget town with industry and polluted city center |
Categories of Indoor Air According to EN13779
| Catergory | Description | CO2 level ppm | Outside Air m3/h/person |
| IDA 1 | High indoor air quality | < 400 | > 54 |
| IDA 2 | Medium indoor air quality | 400-600 | 36-54 |
| IDA 3 | Moderate indoor air quality | 600-1000 | 22-36 |
| IDA 4 | Low indoor air quality | > 1000 | <22 |
EN13779 Meets EN779:2002 To recommend Filter Classes For Different Levels of ODA and IDA Categories
| Outdoor Air Quality | IDA 1 (High) | IDA 2 (Medium) | IDA 3 (Moderate) | IDA 4 (Low) |
| ODA 1 (pure) | F9 | F8 | F7 | F5 |
| ODA 2 (dust) | F7 + F9 | F6 + F8 | F5 + F7 | F5 + F6 |
| ODA 3 (high concentrations of dust and/or gases) |
F7 + *GF + F9 | F7 + *GF + F9 | F5 + F7 | F5 + F6 |
* GF= Gas Phase Filters
Recommended Products:
DriPak 2000 S
DriPak GF
VariCel EcoPak
VariCel VXL
VariSorb SAAFCity
