Humid­i­fi­er vs Dehu­mid­i­fi­er: Which One Do You Need

  • Maxine Hunt
  • May 12, 2020
  • Comments Off on Humid­i­fi­er vs Dehu­mid­i­fi­er: Which One Do You Need
  • General

The importance of having the optimum amount of atmospheric moisture in your environment cannot be overstated. Humidifiers and dehumidifiers are two machines that can help to raise or reduce the humidity level in your homes, offices, or wherever. But how do you know which one to use?


Humidifiers and dehumidifiers are two entirely different machines. However, not everyone can spot the difference immediately. People often get confused when it comes to choosing the right one they need to improve their environment’s air quality.

Humidifiers help combat low humidity by adding moisture to the air in the form of liquid mist/vapor. Dehumidifiers, on the other hand, remove moisture from the atmosphere.

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According to the United States Environmental Protection Agency (US EPA), the optimum humidity level for healthy indoor environment quality is between 30 – 50%. It is recommended that the atmospheric humidity in your homes and offices should never go below or above this range.

Low indoor humidity levels can birth health, skin, and respiratory complications like sinusitis, itchiness due to cracked skin, etc. Pre-existing health conditions like asthma can also be triggered when the level of atmospheric moisture in your environment is lower than average.

Should the humidity level in your home also get too high, it’s just as detrimental as the lack of it. Excessive atmospheric moisture could promote certain illnesses. That is because a bump in moisture level to anything above 60% causes lethal disease-causing bacteria, molds, and dust mites to thrive.

Do you now see reasons why you should also pay attention to your environment’s humidity level just as much as you monitor the temperature?


Both devices help to regulate the amount of humidity in your environment, but they function differently. As earlier mentioned, a humidifier adds moisture to the air, thereby increasing the atmospheric humidity level. A dehumidifier does the opposite ⁠— reduces atmospheric humidity by removing vapor from the air.


Typically, you’d want to have a humidifier in your home during winter or periods of cold weather conditions. That is because there is limited moisture present in cold air and humidity level is generally low during such periods.

You would want to invest in a humidifier during these periods. That would help raise your room’s humidity level and avert negative effects that might result from dry air.

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About their mechanism of operation, depending on the type, humidifiers come with a tank and an atomizer plate for converting the tank water into warm or cool mist for dispersing the air.

Some models have filters that remove minerals and eliminate bacteria from the water present in the tank. It is also common to find humidifiers with aesthetic illumination that helps improve environmental ambiance.


Both humidifiers and dehumidifiers are designed to improve the air quality of your environment. We’ve briefly highlighted some consequences that could arise from failure to regulate atmospheric humidity and how these two devices can help. Which of the devices you’d use entirely depends on the amount of moisture present in your home at a given time. You’d be able to accurately measure that using a hygrometer or a smart thermostat which reads a room’s humidity level.