How to calculate capacity of dehumidifier? [ Dehumidifier sizing or dehumidifier calculation ]

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In this video, we are going to learn how to do home dehumidifier calculation.
We will learn today how to calculate the home dehumidifier capacity as per the AHAM guideline. It is crucial to do the right dehumidifier sizing. You will spend more money if you buy a high capacity system. On the other hand, you will not get proper performance if you get a lower-rated unit than required. So, let's do it
To do home dehumidifier sizing, you need the following data for calculation. Firstly, we need the area of the room in Square feet. And secondly, we need to know the condition of the room or current humidity in the room. In the AHAM method, it is assumed that the required humidity level for a home should be between 50% to 60% RH
To calculate the room's area in square feet, first measure the room's length in feet. Also, measure the width of the room in feet. And by multiplying the room's length and width, we will get the room's area in square feet.
Every humid place shows some symptoms. And these symptoms change as per the intensity of the humidity. Thus, the condition of the room has been classified into the following types.
First, extremely wet room. This type of room has exceptionally high humidity. One can notice the wet floor due to the condensation of moisture in the air. Second, a very wet room. You will notice a wet wall or seepage on the wall or both.
The third one is a very moist or damp room. The common symptoms of these types of rooms are lousy odor and stains on the wall. The last one is a moderately damped room. These rooms have a slightly high moisture level. Hence, occupants can sense the musty smell and uncomfortable humid weather.
Once we calculated the room's area and selected the room's condition, we can get the capacity of the dehumidifier in liters per day with the help of the AHAM chart.
Let's understand it with an example. Consider that we You have a room with 50 feet in length and 30 feet in width. And you are observing a foul smell and stains on the wall and the floor. Thus, the area of the room will be 1500 square feet. And we can categorize the room condition as a "Very moist" room.
From the AHAM capacity chart, we can conclude that this 1500 square feet very damp room needs a dehumidifier of 12.5 liters' capacity per day.
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