4. When should I conduct the air test?


Timing is key, the majority of test failures occur because the building/unit simply isn’t sufficiently complete. However, leaving it to the last minute puts added pressure on the test if there is a problem.   If you have a number of dwelling units to test of similar design then it is preferable to spend time/effort on the first completions (e.g. show home) to establish what jobs need to be finished to get the desired result. Then you should be more confident about the timing of the tests and the results that should be achieved.