AprilAire Model 865 Steam Humidifier

Whole-House Humidifier With Fan Pack


Our whole-house steam humidifier automatically adds moisture to your home through the use of a dedicated wall vent and fan pack. Steam is created by heating water inside the humidifier and delivered to the fan pack remotely. 


For Large Homes Without Ducted Heating Systems

Model 865 with manual digital humidifier control features:





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 any contents susceptible to damage from changing humidity or dry conditions. Plus, no white film or dust left behind. 


BUY WITH CONFIDENCE: This humidifier was designed and manufactured in the U.S.A. by AprilAire—the inventor of the whole-house evaporative humidifier, and the leader in Indoor Air Quality solutions.









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.

FOR USE IN HOMES in any climate without ducted air systems, and for homes that have special humidity requirements, such as wood floors, humidity-sensitive furnishings or large floor plans.



FULL COVERAGE with a capacity of up to 34.6 gallons per day in a tightly constructed home.


EASILY MAINTAIN OPTIMAL PERFORMANCE by replacing the canister every year, and having a licensed contractor replace the electrode wires every 3 years. 








Humidity Plays a Key Role in Wellness


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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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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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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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

Model 80 Steam Canister

Dispersion Tube

10' Drain Tubing 

Mounting Hardware

Manual Digital Control

6' Steam Hose

Wall Mount Fan Pack

Model 4028 Drain Tee







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