How often should indoor air quality be tested in the workplace?

There isn’t a one-size-fits-all rule, but most workplaces review air quality whenever something changes — new processes, new chemicals, complaints from staff, or visible dust issues. For higher-risk industries like manufacturing, regular testing (yearly or bi-yearly) is common.

Offices may only need testing when problems arise, such as odours, humidity issues or signs of mould. The best approach is to treat testing as part of ongoing building health rather than a once-off exercise.