The best humidifiers work by pumping moisture into dry indoor air, delivering a flurry of benefits, from relieving irritated skinchapped lips and sore throats to preventing wood floors from cracking. “Excessively dry air also puts stress on the mucus membranes, making them more susceptible to allergens and other airborne irritants,” says Dr. John McKeon, a former ER doctor and CEO of Allergy Standards, an independent asthma- and allergy-friendly certification company.

Here, we compare the pros and cons of each type of humidifier, breaking down the main differences and explaining which option is better to use for coughs and congestion, as well as which is the best type of humidifier for babies.

To read more about this list, read Good Housekeepings latest piece!