In general, a whole-house unit is an install-it-and-forget-it item. It's integrated into the blower system on your furnace, drawing water directly from your water supply. There are a few different types, including a sprayer that injects mist into the airf

In general, a whole-house unit is an install-it-and-forget-it item. It's integrated into the blower system on your furnace, drawing water directly from your water supply. There are a few different types, including a sprayer that injects mist into the airflow inside your ductwork and a foam cylinder that rotates in a water tray, with air blowing through and around it.

The whole-house system's greatest advantage is that it requires virtually no maintenance and keeps your entire home at a set humidity with a one-time setup. Because it draws water from your plumbing system as it's needed, you never have to fill it or worry that it's not humidifying because it's run dry. It's virtually soundless, and initial cost is a fraction of what most portable units cost. In addition, most whole-house humidifiers literally cost pennies per year to operate.

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