Blower Door


To become accredited, ATTMA candidates go through rigorous training on the science of building air leakage and measurement. They demonstrate knowledge and skill in measuring building envelopes according to the standards and they prove that they know how to use the equipment and analyse the results.

ATTMA offers accredited courses in Level 1 (simple buildings like houses) and Level 2 (larger buildings requiring multiple fans) testing.

For more info, check out course listings here: