Calibration of BlowerDoor fans

Manufacturer's calibration (1-point)

We offer manufacturer's calibration (1-point) for the measuring fans of BlowerDoor Standard (model 4) and BlowerDoor MiniFan (model DuctBlaster) according to the manufacturer's specification. One measured value is calibrated per measuring ring (open fan as well as ring A - E or 1 - 4). The requirement of ISO 9972 (measuring accuracy ± 7 %) is assessed. You will receive a calibration certificate.

A previous basic maintenance and functional test is included. We calibrate according to your appointment request. Your registration is desired to ensure short calibration times of max. five working days.

Recommended calibration interval: 4 years

Prices & Registration

Calibration with Cofrac certificate

We offer calibration with a Cofrac certificate for the measuring fan BlowerDoor Standard (model 4 and model 3) and BlowerDoor MiniFan (DuctBlaster model) by our ISO/IEC 17025 accredited partner calibration laboratory. Calibration is carried out on request. Please register in advance.  

Before the calibration, a comprehensive basic maintenance and a functional test of the measuring fans are carried out. For each measuring ring (open fan and measuring rings A - E or 1 - 4), 3 measured values are calibrated. The measuring accuracy of the BlowerDoor measuring fan of ± 4 % (open fan and rings A - C as well as 1 - 4) and ± 5 % (rings D and E) is assessed. You will receive a Cofrac certificate* (formerly DAkkS certificate).

Prices & registration

*Comité franꞔais d'accreditation (Cofrac) is the national accreditation body in France. Cofrac is a signatory to international agreements of ILAC and EA for the recognition of the equivalence of calibration documents.