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Home Dehumidifier Sizing Calculator

Home Dehumidifier Sizing Calculator

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How to Use the Home Dehumidifier Sizing Calculator

This calculator helps you determine the right dehumidifier capacity for your home by taking into account your room’s conditions and size. Follow these simple steps to get an accurate estimate:

Step 1: Enter Your Current Room Conditions 

  • Current Room Temperature (°C): Input the current temperature of the room you wish to dehumidify, measured in degrees Celsius.
  • Current Room Humidity (% RH): Enter the current relative humidity percentage of the room. You can typically find this using a hygrometer or a smart home sensor.

Step 2: Define Your Desired Humidity Level 

  • Desired Room Humidity (% RH): Specify the target relative humidity percentage you want to achieve in the room. A common comfortable and healthy range is typically between 40% and 50% RH.

Step 3: Provide Room Dimensions 

You have two ways to input your room’s size. Choose the method that’s easiest for you:

  • Option A: Enter Length, Width, and Height
    • Length (m): Input the length of the room in meters.
    • Width (m): Input the width of the room in meters.
    • Height (m): Input the height of the room in meters.
    • (The calculator will automatically calculate the room’s volume from these dimensions.)
  • Option B: Enter Room Volume (m³)
    • OR Enter Room Volume (m³): If you already know the cubic volume of your room (in cubic meters), you can directly enter it here. This is useful if your room has an irregular shape that’s hard to measure with simple length/width/height.

Step 4: Specify Occupancy (Choose between 1 to 20 people):

  • Number of people normally occupying this room: Enter the average number of people who are typically in the room. People contribute moisture to the air through breathing and perspiration, so this is an important factor.

Step 5: View Your Recommended Dehumidifier Capacity

  • Once all the required information is entered, the calculator will process these inputs. It will then display the recommended dehumidifier capacity, typically expressed in liters per day (L/day) or pints per day (PPD), that you need to effectively control humidity in your specified room.

Tip: For best results, take parameters when the room conditions are typical of how you usually experience them.