Small Bypass Humidifier w/ Manual Humidistat

The Aprilaire Model 500 Humidifier is economical and a proven performer designed for small to mid-sized homes. Features: A built-in bypass damper, which means less parts to install Truly automatic control, but it can also be installed in manual mode Comes with a manual humidity controller that supports manual humidity control only Provides vital service, temperature and relative humidity indicators in manual mode as well. Humidifies tightly constructed homes up to 3,000 square foot in size. Performs quietly with simple annual maintenance. Comes equipped with a drain to flush minerals from the unit. Incorporates easy right or left discharge change-over. Has an evaporation capacity of 0.50 gallons per hour.