AprilAire 500M Whole-House Humidifier With Manual Humidistat Control

The Aprilaire Model 500M is the economy version of the 600M intended for use in smaller homes. It takes humidifier innovation to the next level and performs as good as it looks! The Aprilaire 500M is easier than ever to install because it includes a built-in bypass damper, which means fewer parts to install. Plus, the damper is conveniently labeled for summer and winter settings, allowing you to set it for the entire season with no guesswork involved. This humidifier can be installed on the supply or return air ductwork. It is also left or right side reversible. Includes manual control humidistat, water pad, 110v to 24v transformer. Features: Full Coverage up to 3,600 square feet in tightly built homes with a capacity of 12 gallons per day. Comes with manual humidifier with a single sensor built into the standard control monitors indoor relative humidity for use in manually setting the percent humidity in your home.