Special Same Day* Ground Shipping On The Aprilaire 500 Humidifier!

The Aprilaire Model 500M Whole-House Humidifier features a built-in bypass damper and is designed for use in small to mid-size homes with manual digital control for premium performance and convenience. The Model 500M bypass humidifier is an economical proven performer in the extensive line of Aprilaire Humidifiers. For some homes, a manual control may be recommended. The Aprilaire 500M digital control can be used in manual mode while still providing vital service, temperature and relative humidity indicators.

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• Installed in either your living area or central heating and cooling system ductwork
• Comes equipped with a drain to flush minerals from the unit
• Has an evaporation capacity of 0.50 gallons per hour
• Humidifies tightly-constructed homes up to 3,000 square feet in size