Some viruses can grow more easily in dry air, so running a humidifier can help young children from becoming sick. One problem with tabletop, or portable, humidifiers is that they can require frequent maintenance. If the water isn't changed enough, bacteria can build up in the reservoirs. Also, since they are electrical appliances, you have to be careful about leaving the devices unplugged when they're not in use. Warm humidifiers, in particular, pose a safety risk because they can cause burns.

Healthy Climate® Power Humidifiers and Healthy Climate® Bypass Humidifiers, are whole-home systems, and that means they attach to your furnace or air handler and add moisture as needed to the air throughout your entire home, rather than just one room. They're also an easier and less intrusive option than portable units, since there's no need to clean and fill the unit on a constant basis.