A humidifier is a device that creates water vapor to add additional humidity to the air of a home. This is a great way to improve indoor air quality, which has a direct effect on respiratory health. Dry air is harsh on your skin, nasal passages, and respiratory system, all the way down to your lungs.

Wondering if your home’s air is too dry? Here are some signs you need a humidifier:

1. Dry Skin: Dry, irritated skin is a classic warning sign that there’s not enough moisture in the air. It’s usually one of the first issues you’ll experience. If you notice you’re using more moisture-rich skincare products to keep skin from chapping, you may need a humidifier.
2. Nasal Symptoms: When it comes to dry air, the nose knows. If you have symptoms like dry, irritated nostrils or frequent nosebleeds, the air may be to blame. Chronic runny nose can also be your body’s way of defending itself from dry air.
3. Recurring Cold or Flu: Dry air can sap the moisture from deep in your respiratory tract. That may make it harder for your body to resist common respiratory infections as they take root. It could also take longer to fight them off once they begin.
4. Persistent Cough: A dry, non-productive cough may be a sign you need a humidifier. The more intense the “tickle” in your throat, the more likely it’s a sign that you need more humidity to lubricate the delicate structures of the mouth and airway.
5. Sore Throat: Do you wake up some mornings with a sore throat? Dry air may be to blame. While sleeping, people often breathe through the mouth for part of the night without knowing it. When air is dry, this can cause damage to the throat.

If you experience one or several of these worries, a humidifier may be the perfect solution. There are many different types of humidifier: Everything from small models for the bedside table to central humidifiers attached directly to the home’s ventilation system.