For ideal comfort and health, it's best to maintain your home and room's humidity level at between 40 to 60% . This is rather hard to do, especially during the winter months, so to humidify your room, you will need a humidifier. Humidifiers come in all sorts of shapes and sizes and there are a few key factors you need to consider before you can determine the right humidifier for your needs. If you've decided that a single-room humidifier is right for you, this guide will tell you which are the best humidifiers on the market in 2017.