The Indoor Air Quality Procedure (IAQP) within ASHRAE Standard 62.1 is an alternative to the Ventilation Rate Procedure (VRP). It allows designers to use indoor air cleaning to help reduce contaminants.

The IAQP focuses on maintaining the quality of air that is acceptable to human occupants and minimizes adverse health effects. It involves the following steps:

1. Identify Contaminants: Identify the contaminants of concern in the indoor environment, which can vary depending on the specifics of the building and its occupants.

2. Establish Criteria: Establish criteria for each contaminant of concern. This could be a guideline, standard, or other reference value for acceptable indoor concentrations.

3. Evaluate Sources: Evaluate the emission rates of contaminants from both indoor and outdoor sources.

4. Assess Ventilation: Assess the ventilation system’s ability to maintain contaminant concentrations below the established criteria. This includes considering the efficiency of air cleaning devices for removing contaminants.

5. Monitor: Monitor the indoor environment to ensure that the contaminant concentrations remain at or below the established criteria.

This procedure allows for the use of air cleaning technologies and can result in energy savings by reducing the heating and cooling demand on existing systems.

Please note that the specific requirements and procedures for compliance can vary, so it’s important to refer to the full text of the standard and any related guidelines or interpretations. If you’re considering using the IAQP within ASHRAE 62.1, you may want to consult with a professional who is familiar with the standard and your specific situation.

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Source: Conversation with Bing, 4/5/2024