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Aprilaire Model 800 Residential Steam Humidifier

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Aprilaire Model 800 Residential Steam Humidifier

New from Aprilaire - the Model 800 Steam Humidifier use electrode technology to product steam.  The Aprilaire Model 800 Residential Steam Humidifier features truly automatic control, so there's no need to manually control the humidifier - though it can be installed in manual mode, if desired.  Complementing new, efficient air heating sources and other specialty heating systems:  Has a capacity of 11.5, 20.5 or 23.3 gallons per day depending on electrical draw. Humidifies tightly-constructed homes up to 6,200 ft2.

Protect your family and your home from the unhealthy and damaging effects of over-dry air.  Dry nose, cracked, itchy skin, and sore throats. Aggravated allergy and asthma symptoms. Painful static shocks. Chipping paint and plaster. Splitting or cracked wood floors, furniture, trim and molding. Sound familiar? Why go through another season with these problems when there is a solution-an Aprilaire Whole-Home Humidifier.


  • Quality and Reliability - Proven design using electrode technology perfected by Dri-SteemĀ® a subsidiary of Research Products.
  • Easy to Install - Remote or duct mount with no additional accessories.
  • Easy to Maintain - No cleaning or scrubbing, simply remove canister and replace.
  • Dispersion and Absorption - Steam dispersion technology, ensures proper dispersion into the air, preventing condensation in duct.
  • No Accessories Required
  • Water filtration not needed even in most difficult conditions.
  • Control, dispersion tube, steam hose and drain tube included in the box.

To create steam water needs to be heated. With electrode technology electrical current flows between submerged electrodes, resistance of the water to the electric current heats the water. The submerged  electrodes are found in a replaceable canister. At the end of a humidifier season the canister, that includes the electrodes, are replaced. No cleaning, no scrubbing, just simply replace the canister and wait for the next humidifier season.

When water is heated it boils and produces steam leaving behind deposits and minerals. Electrode technology requires impurities in the water to promote the transfer of electricity. For this reason water filtration is not required with electrode technology, minimizing the complexity of the installation and ongoing operating costs. The unit will operatewith water hardness between 3 and 36 grains - a very wide range. If reverse osmosis or deionizedwater is present, plumb unit to water line prior to those devices.

Simple - unit selection The Aprilaire steam humidifier uses electricity to boil the water. The control algorithm in the unit manages the water level to insure 11.5 amps of electricity is used when operating. The 11.5 amps is the same if it's installed with 240v or 120v, leading to an increase in steam produced based on the voltage that is selected. This ability allows the same unit to be used for small and large homes.

Canister replacement is recommended every humidifier season. When the canister cannot reach the correct conductivity, it will stop and wait for the canister to be replaced. Abnormal water conditions may cause the unit to operate for month or years. If the canister cannot reach 11.5 amps the unit will shut down, the service light will turn on and it will wait for the tank to be replaced.

After the water is boiled and steam is produced the technology utilized to disperse the steam into the air stream is critical to avoid application problems associated with rusting ducts.  Steam is delivered into the airstream through a dispersion tube mounted in the HVAC system ductwork. Openings in the dispersion tube are fitted with "tubelets" which extend into the center of the tube. The design of the dispersion tube and tubelets distribute steam over a wide area in the duct and direct any condensed moisture back into the steam hose.

Humidifier, Automatic Digital Control (#62), Dispersion Tube, Steam Hose (6 Feet), 7/8" Drain Tubing (10 Feet), Hose Clamps, Saddle Valve, Mounting Screws

Dimensions: 10-1/8" W x 20-7/8" H x 7-1/8" D
Plenum Opening: 1-1/4" Diameter Hole
Voltage - kW - Maxium Steam (GPD) - Current Draw
120V - 1.4 - 11.5 - 11.5 Amps
208V - 2.4 - 20.5 - 11.5 Amps
240V - 2.8 - 23.3 - 11.5 Amps