Natural smoke and heat exhaust ventilators

Ausschnitt der IFI-Stadt, NRWG

Based on its accreditation and notification by the national accreditation body of Germany  (DAkkS), I.F.I. is authorized to test and certify products in the field of natural smoke and heat exhaust ventilation in accordance with European standards. This involves natural smoke and heat exhaust ventilators or NSHEV such as facade NSHEV, louvered NSHEV, NSHEV in continuous rooflights or skylight domes.

We offer individual tests of the constancy of performance as well as the entire testing and certification process, right through to the authorization to provide the products with a CE mark.

I.F.I. is accredited testing laboratory D-PL-17774-01-00 for testing natural smoke and heat exhaust ventilators (NSHEV). Our test center carries out the following tests of NSHEV in compliance with EN 12101-2:2003:

  • determination of the aerodynamic free area pursuant to Annex B
  • functional reliability pursuant to Annex C
  • performance under load in accordance with Annex D
  • test under wind load in accordance with Annex F

Furthermore we cooperate with partner inspection bodies to offer:

  • functional tests at low ambient temperature according to Annex E;
    Testing under the own direction of I.F.I. in cooperation with partners is also possible. Feel free to contact us for any questions on this subject.
  • heat resistance test according to Annex G and reaction to fire in accordance with EN 13501.


Flow chart certification process NSHEV at IFII.F.I. is accredited certification body D-ZE-17774-01-00 and notified product certification body in compliance with the Construction Products Regulation CPR (EU) No. 305/2011. As such, we are authorized to carry out "independent third party activities for the assessment and verification of constancy of performance" of smoke and heat exhaust ventilators pursuant to EN 12101-2:2003 under system 1, which entitle the device to CE marking.

We are listed with the EU Commission (here) as Notified Body under the identification number 1368.

The certification process is based on previous testing and we are proud to offer our clients these services from a single source. If you want to know how the different stages of the certification process look like, simply click on the flow chart.