AprilAire 300 Self-Contained Evaporative Humidifier

Automatic High Output Furnace Humidifier


AprilAire introduced the first evaporative humidifier for forced air furnace systems back in 1954. Since that time, AprilAire continues to lead the industry in whole-house humidification systems. 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.

AprilAire 300 Self-Contained Evaporative Humidifier

For Homes Heated With Ductless Systems

Model 300 Features:








BUY WITH CONFIDENCE: This humidifier was designed and manufactured in the U.S.A. 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, with a capacity of 13 gallons per day in an average constructed home*.

*AHRI Guideline F for Average Construction homes, https://www.ahrinet.org/App_Content/ahri/files/Guidelines/AHRI_Guideline_F_SI_2015.pdf


Installed Model 300 Humidifier




Humidifier-Model-300 install

ONBOARD SENSOR measures the relative humidity inside the house. Fans turn on automatically when the humidity drops below the set point.



CONVENIENT CONTROL to monitor and adjust the humidity with a high-contrast digital screen.



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.







Humidity Plays a Key Role in Wellness

Benefit Icon   Health

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.

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Benefit Icon   Comfort

Whether your home is in a dry region of the country, or in an area with seasonal dryness, maintaining the right level of humidity can make all the difference in how comfortable you feel in your home.

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Benefit Icon   Preservation

Help preserve the natural beauty of wood floors, cabinetry, furnishings, and anything else in your home susceptible to warping, cracking, or other permanent damage due to dry air.

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Healthy Humidity Icon

Breathe Healthy Air, no matter when or where with the AprilAire Healthy Air Systemâ„¢. Find out how balancing your humidity benefits your health.

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Installation instructions

Saddle valve

6' power cord

Mounting brackets

10" to 8" reducer

#35 Water Panel


300 side with brackets





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Healthy Air Professionals Who Care

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