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AprilAire 300 Whole-House Evaporative Humidifier

AprilAire 300 Whole-House Evaporative Humidifier


  • BUY WITH CONFIDENCE: This humidifier was designed and manufactured in the USA by AprilAire – the inventor of the whole home evaporative humidifier, and the leader in indoor air quality solutions
  • FOR USE IN ANY HOME WITH ANY HEATING SYSTEM: Can be used in homes with Mini-Splits, Boilers, Radiant Heat & Other Ductless Systems, as well as homes with ducted forced air furnaces.
  • FULL COVERAGE: up to 2,000 square feet in average constructed homes with a capacity of 13 gallons per day.*
  • CONVENIENT DIGITAL CONTROL: to monitor and adjust the humidity with a high-contrast digital screen.
  • ONBOARD SENSOR: measures the relative humidity inside the house. Fans turn on automatically when the humidity drops below the set point.
  • HUMIDITY FOR HEALTH: AprilAire Humidifiers can help you maintain optimal humidity in your home of 40–60% which has been shown to reduce the incidence of respiratory infections and symptoms related to allergies and asthma by minimizing the formation of bacteria and viruses, fungi, and dust mites.
  • HUMIDITY FOR COMFORT Balance your humidity to reduce the incidence of dry skin, static shock, and other dry air issues.
  • PROTECT YOUR HOME Preserve your home and its furnishings susceptible to damage from changing humidity or dry conditions.


Our self-contained evaporative humidifier automatically adds moisture to your home's dry, hot air as it moves through our moisture-laden water panel evaporators to create Healthy Humidity throughout your home.


  • 300 Humidifier
  • Model 65 Digital Manual Humidistat
  • Model 35 Water Panel
  • Saddle Valve
  • 6-foot Power Cord
  • Mounting Brackets
  • Installation Instructions


  • Materials: Steel - Galvanized
  • Actual Measurements: 12.43H x 22.07W x 14.375D (inches)

*AHRI Guideline F for Average Construction homes

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