AprilAire Model 800 Steam Humidifier

Whole-House Humidifier


Our whole-house steam humidifier adds moisture to your home by passing steam through a dispersion tube connected to your duct system. The steam is created by heating water in an internal canister. 


For Large Homes with Significant Humidity Needs

Model 800 with Automatic Digital Humidifier Control Features:





HUMIDITY FOR HEALTH: AprilAire Humidifiers can help you maintain optimal humidity 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-home evaporative humidifier, and the leader in Indoor Air Quality solutions.








DUAL SENSOR 24/7 AUTO MODE 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 with ducted air systems, with or without forced air heat, and for homes that have special humidity requirements, such as wood floors, humidity-sensitive furnishings, large floor plans or short furnace run times.. 



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

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 System™. 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 Screws

Automatic Digital Humidifier Control

Outdoor Temperature Sensor

6' Steam Hose

Hose Clamps


What is ibn the Box Model 800





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