Content

• Steps
• Advice

Dehumidifiers are very useful in removing humidity in your home, thereby also helping to reduce water damage and prevent mold. Since this device has many sizes and capacities, you may be wondering what size device to use for indoor space. To choose a suitable dehumidifier, you need to determine the size and humidity level of the space to be treated. You can also save energy and optimize the performance of your dehumidifier by choosing a unit with a capacity higher than the recommended capacity for your space.

Steps

Method 1 of 2: Find out what kind of dehumidifier you need

1. 

   Measure the size of the room or house. When choosing a dehumidifier, you need to take into account the size of the space that you want to dehumidify. If you don't know how large the room is, you can use a tape measure to measure the length and width of the floor. Multiply the two measurements together to find the area of ​​the room in square meters.
   • For example, if your room is 3.7 m by 3 m, the size of the room will be 11m2.

   Do you know? In most buildings, the ideal relative humidity for preventing bacteria and mold will be around 30-50%. Most dehumidifiers have integrated humidity control devices, allowing you to set the machine at the optimum humidity.

   
   

2. 

   Buy a dehumidifier for the whole house if the dehumidifier space is more than 230m2. If you need to dehumidify all over the house, perhaps a whole-house dehumidifier will be worth buying. You can purchase a dehumidifier with built-in design with indoor heating or central air conditioning, or choose a custom-installed one. Whole-house dehumidifier is designed for large spaces up to 280m2.
   • Although this machine is quite expensive, in the long run you can save money and energy as it makes the air conditioner operate more efficiently.

3. 

   
   
   Choose a dehumidifier with a dehumidifier in a cool environment. Dehumidifiers come in two basic types: desiccant rotor desiccants and condensing dehumidifiers. Although rotor dehumidifiers usually have a lower power rating than condenser models, they are much more efficient at low temperatures.Generally, you should use a dehumidifier with a dehumidifier if the room temperature drops below 18 degrees Celsius.
   • Dehumidifiers with dehumidifiers also have the advantage of running quieter than condenser models.

4. 

   
   
   Purchase a condenser dehumidifier for use in hot humid environments. In an environment that is always hot and humid, it is probably best to use a condenser dehumidifier. This type of dehumidifier usually has a higher capacity and operates more efficiently at high temperatures than a dehumidifier with a dehumidifier.
   • If the room is using a condenser dehumidifier with a temperature below 18 degrees C, ice can form in the evaporator and cause the machine to operate inefficiently.
   advertisement

Method 2 of 2: Choose the capacity of the dehumidifier

1. 

   Look for signs of humidity to estimate the humidity level in the room. Although the exact humidity in a room can be measured with a hygrometer, usually you don't need to measure the exact humidity when choosing to buy a dehumidifier. To estimate the humidity in the room, watch for obvious signs, such as condensation in windows or moisture on walls. For example:
   • Space medium humidity if the air looks sticky or damp, or smells musty while it is outside.
   • Space very humid always has a musty smell and a feeling of moisture. You also notice streaks of moisture on floors and walls.
   • If it's space wet, You will see drops of water on floors and walls, or moisture seeping around edges of floors and walls. You will always feel wet and smell the moisture.
   • Space extremely wet There will be visible standing water on the floor.

2. 

   Buy a dehumidifier with a capacity of 4.7 -12.3 liters for a relatively humid space. The "size" of the dehumidifier is actually the capacity of the machine, ie the amount of water that the machine can draw from the air in 24 hours. If the room is just relatively warm, you won't need to buy a high-powered device. The total capacity you need will depend on the size of the room. For example:
   • A 46 square meter space just a 4.7 liter capacity dehumidifier is enough.
   • If the space is 93 square meters, you should buy a device with a capacity of 6.6 liters.
   • The 140 square meter space needs a machine with a capacity of 8.5 liters.
   • With a space of 190 m2, you should buy a dehumidifier with a capacity of 10 liters.
   • If the space is 190 square meters, buy a machine with a capacity of 12 liters.

3. 

   Choose a dehumidifier with a capacity of 5.7 - 15.1 liters for very humid environments. If the environment is very humid (i.e. always has a musty smell and there are damp spots on the floors and walls), choose a dehumidifier with a slightly higher capacity. You will have to take into account the room size and humidity. For example, a dehumidifier should have the capacity of:
   • 5.7 liters for a large space of 46m2.
   • 8 liters for a large space of 93m2.
   • 10 liters for a large space of 140m2.
   • 13 liters for a large space of 190m2.
   • 15 liters for a large space of 230m2.

4. 

   Buy a 6,6 - 16-liter dehumidifier for wet environments. With wet environments (ie with water seeping out or “sweating” on walls and floors), you will need a stronger dehumidifier. Choose the capacity of the dehumidifier based on the size of the room. For example, you should buy a machine with a capacity:
   • 6.6 liters for a large space of 46m2.
   • 9.5 liters for a large space of 93m2.
   • 12 liters for a large space of 140m2.
   • 15 liters for a large space of 190m2.
   • 18 liters for a large space of 230m2.

5. 

   Shop for a 7.6 - 20.8 liter dehumidifier for extremely wet spaces. If your space is so wet that there is standing water on the floor, you need to buy a high capacity dehumidifier based on the size of the room. For example, you need to buy a dehumidifier with a capacity:
   • 7.6 liters for a large space of 46m2.
   • 11 liters for a large space of 93m2.
   • 14 liters for a large space of 140m2.
   • 18 liters for a large space of 190m2.
   • 21 liters for a large space of 230m2.

6. 

   Buy a dehumidifier with a slightly higher capacity to save energy. Although a large dehumidifier will be more expensive in the beginning, in the long run you will save money and energy if you choose to buy a machine with a capacity higher than necessary. A machine with a higher capacity will not have to work harder to keep the room dry like the one with the correct capacity recommended for the room.
   • For example, even if you only dehumidify in a small 13.4m2 bedroom, you should still invest in a dehumidifier with a capacity of 46 m2 in an environment with the same humidity.
   • You can buy large portable dehumidifiers with a capacity of up to 33 liters per day.

   Advice: In addition to saving energy and reducing wear, buying a dehumidifier larger than necessary also helps to reduce noise as you can keep it running low.

   advertisement

Advice

• While a dehumidifier can keep a room dry, it's best to try to avoid leaving a humid space in the first place. You can keep a room more dry by using the vents and exhaust fans in your kitchens and bathrooms, opening windows and doors in cool dry weather, with good insulation and heating your home in cold weather.
• Many central air-conditioning systems have a built-in dehumidifier. If you have an air conditioner and the indoor space is still humid, have a technician check the air conditioner to see if it is working properly.
• In general, you don't need detailed parameters (such as the indoor air circulation rate or the exact volume of the space to be dehumidified) to determine the type of dehumidifier to buy. You just need to find the dehumidifier that matches the size (in square meters) and the humidity in the space to be dehumidified.