Health

5 Benefits and 3 Drawbacks of Home Humidifiers, and the Different Types

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1. They May Make Your Home’s Environment Less Conducive to Cold and Flu Germs

“There have been reports that higher humidity levels (around 40 to 50 percent) can play a role in decreasing the concentration and transmission of airborne viruses that cause the common cold and influenza,” says James. “Humid air can trap and neutralize viruses, making it difficult for individuals to inhale them.”

In a 2022 study, researchers tracked the spread of virus particles inside two New York City classrooms. They found that increasing relative humidity (or the amount of moisture in the air) using humidifiers can significantly reduce the spread of airborne viruses in indoor spaces. The reduction of spread was particularly significant when the relative humidity was greater than 40 percent.

Another study found that maintaining indoor relative humidity greater than 40 percent will significantly reduce the infectivity of aerosolized influenza.

2. Humidifiers Can Help With Allergies, Asthma, and Sinus Problems

Low humidity can cause your eyes, nose, and lips to dry out. “It can also result in an irritated nose, a dry and scratchy sore throat, and itchy eyes, which can occur when you have allergies (for example, hay fever), as well as worsening asthma and sinus problems,” says James.

Therefore, the proper use of a humidifier in the home can be beneficial for preventing dryness and decreasing symptoms that can occur in seasonal allergies, asthma, and sinus problems, he explains. 

RELATED: 7 Things You Didn’t Know About Keeping Your Sinuses Healthy

In addition, proper humidity can reduce airway irritation by providing much-needed moisture to your breathing passages. James advises keeping your home’s relative humidity around 30 to 50 percent, as recommended by the Environmental Protection Agency.

3. They Can Moisturize Skin and Help Relieve Eczema

Low humidity can dry your skin and worsen eczema, says James. “Humidifiers help to restore moisture in the air, which can be beneficial to manage dry, irritated skin that is common in eczema,” he explains. Using a humidifier can be part of your overall treatment plan if you have eczema, he adds. The National Eczema Association recommends running a humidifier when you go to bed or during the day if you spend a lot of time at home.

4. Humidifiers May Help Soothe Coughs and Colds

Cool mist humidifiers may help ease coughing and congestion, says James. “This occurs by relieving irritation in the nose and airways, as well as breaking up mucus that can make it harder to breathe and cause coughing.”

While cool mist humidifiers may ease cold symptoms, heated humidified air doesn’t seem to have the same effect.

5. They Can Help Reduce Heating Bills

Maintaining optimal humidity levels in your home can help reduce overall energy consumption, save energy, and lower your heating bills for a number of reasons.

Firstly, you may not feel as chilly. “Dry air and low humidity in the home can lead to the misconception of needing higher indoor temperatures for comfort, which can increase heating costs,” says James.

Secondly, humid air requires less energy to heat, which can lower energy consumption and your heating bills, he adds. Thirdly, proper humidity levels help you to retain heat, reduce heat loss, and decrease reliance on heating systems.

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