For calculating the number of dehumidifiers, what is the first step?

The first step in calculating the number of dehumidifiers required for a drying project involves calculating the Total PPD (Pints Per Day) removal recommendation. This step is crucial as it establishes the baseline for how much moisture needs to be removed from the affected area to effectively dry the materials and prevent further damage or mold growth.

Understanding the Total PPD helps set a target for the dehumidification process based on the specific conditions of the environment, such as relative humidity, temperature, and the type of materials that are wet. Once the total PPD is calculated, you can effectively match that requirement with the capabilities of the dehumidifiers being considered, thereby determining how many units will be necessary to achieve the desired drying goals.

Calculating the total square footage or estimating drying time, while important during the overall assessment, do not provide specific insights into the moisture removal needs and capabilities of the equipment, thereby making the calculation of Total PPD the foundational first step in this context. Similarly, determining the AHAM rating of dehumidifiers, although necessary for selection, follows the establishment of moisture removal requirements rather than leading the process.