How to Install a Whole-House Humidifier
Stop settling for dry air. Instead, install a whole-house humidifier. It's easier than you may think.
Protect your family from dry air with a whole-house humidifer. These systems are relatively simple to install, and they typically attach to the main stack of a forced-air furnace where the unit draws its water from a nearby hot or cold water pipe. Some humidifiers are installed in the return-air duct and add moisture to the air before it's heated. Others employ a bypass duct to move heated air through the humidifier and reintroduce it to the air going to the house.
Installing either system involves cutting a hole in the venting using templates provided by the manufacturer. You'll need about two hours to mark the template, cut holes, and install the humidifier. Before you begin, make sure to shut off the furnace.