Dehumidifier VS Humidifier

Humidity levels play a mayor role in the comfort of any household. Humidity is best described as the amount of water vapor in the air around us. Humidity swinging between to extremes, being either very high or very low, will not only affect your health, but also the condition of your home. During warmer months when humidity is high, it can encourage mould growth, which leads to asthma and sinuses, while very low humidity on the other hand, dries out the skin and causes wood to shrink. Low humidity can also lead to allergies and respiratory problems.

Both humidifiers and dehumidifiers are designed to maintain optimum humidity levels. Ideally, humidity should range between 30 and 40 percent during the winter months, and below 60 percent during the summer months. Some of the latest models will have a build-in humidity gauge.


A dehumidifier has the exact opposite function than a humidifier. Dehumidifiers draws excess water from the air and dry air is circulated back into the room. They work best in warm tropical temperatures on southern winters with high humidity levels. Needless to say, a humidifier restores moisture in the air, so your choice will depend on what you need. Certain brand offers a dehumidifier / humidifier combo, which will be the ultimate choice.

Humidifiers serve the opposite function in a home. They add moisture to the air through a mist or vapor, depending on the type.

Dehumidifier or Humidifier for Allergies

It is impossible to say which is best. Should you choose a dehumidifier or humidifier for allergies? It gets confusing. The answer can only be found in the humidity levels in your house.


  • Prevents the growth of mold, mildew and dust mites which will lead to asthma and allergies.
  • Should be used in summer when the humidity hits 60 percent or higher, and higher than 50 in winter


  • When the air is too dry, it will lead to nosebleeds, itchy skin, asthma flares and allergies.
  • A humidifier should be used when the humidity drops below 35 percent.

As you can see, both high and low levels of humidity will contribute to allergy outbreaks. The time of year and your location will determine which unit is best suited

Dehumidifier or Humidifier for Baby

Again, it will really depend if you will use a dehumidifier of humidifier for your baby for all the reasons explained above. As a rule of thumb, doctors tend to tell parents not to use a humidifier with an asthmatic child, since the added moisture is bad for the respiratory tract. However, very low levels of humidity will cause a baby’s hyper sensitive skin to dry out, and dry air will leave them susceptible to asthma and bronchitis.

It is important that the right balance should be maintained.

Dehumidifier or Humidifier in Winter

Humidifiers are best used in winter. The air tends to be dry, with low humidity levels. There are exceptions to the list, depending on where you stay. The use of heaters and fireplaces will further seep moisture from the air. This is why a lot of people suffer from dry and flaky winter skin, especially the very young and very old. People who are already susceptible to respiratory issues run the risk of suffering from bronchitis and asthma.


The two appliances can’t compare, since they both serve to entirely different functions, even if the end goal is the same; to achieve the optimum level of humidity. You might require both machines for different times of the year. The one solves some problems that the other doesn’t, and vice versa.

Based on dehumidifier reviews, the combination humidifier/dehumidifiers are the best for people living tropical areas of high summer rainfalls and dry winter seasons. When strategically placed, both will make a dramatic difference to your living conditions.

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