According to ASHRAE 62.1 (2007), what percentage of people must not express dissatisfaction for IAQ to be acceptable?

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Multiple Choice

According to ASHRAE 62.1 (2007), what percentage of people must not express dissatisfaction for IAQ to be acceptable?

Explanation:
The idea here is that acceptable indoor air quality is judged by how occupants perceive it. ASHRAE 62.1 (2007) sets a threshold for satisfaction: no more than 20% of occupants should be dissatisfied with IAQ. That means at least 80% must not express dissatisfaction for the space to meet the standard. In practice, this is assessed through occupant surveys or validated methods to gauge perceived air quality. So the minimum share of people who must not be dissatisfied is 80%. It’s worth noting that a scenario with even higher satisfaction (for example, only 10% dissatisfied) also meets the criterion, but 80% is the threshold the question is asking for.

The idea here is that acceptable indoor air quality is judged by how occupants perceive it. ASHRAE 62.1 (2007) sets a threshold for satisfaction: no more than 20% of occupants should be dissatisfied with IAQ. That means at least 80% must not express dissatisfaction for the space to meet the standard. In practice, this is assessed through occupant surveys or validated methods to gauge perceived air quality. So the minimum share of people who must not be dissatisfied is 80%. It’s worth noting that a scenario with even higher satisfaction (for example, only 10% dissatisfied) also meets the criterion, but 80% is the threshold the question is asking for.

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