An installed whole-home humidifier adds the right amount of soothing moisture to your entire home. To achieve the same effect with a portable unit, you would need to place one in every room of your house.

Residential Steam Humidification

  • Quality and Reliability
    Proven design using electrode technology perfected by Dri-Steem® a subsidiary of Research Products.
  • High Capacity
    One unit can provide between 11.5 and 34.6 gallons per day.
  • 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
    Control, dispersion tube, steam hose and drain tube included in the box.



Model 850 Fan Pack

  • Weight: 10 lbs, 24 VAC, 60 HZ and 0.75 Amps
  • The Model 850 Fan Pack marries with the Aprilaire Model 800 Steam Humidifier to provide comfortable humidity levels to homes without duct work.
  • Quiet Operation makes the Model 850 Fan Pack practically unnoticeable
  • Designed to blend into a home’s environment
  • Easy install – Recessed into a wall and connects directly to the Model 800 Steam Humidifier.

Humidifier Controls

Digital Controlprovides accurate information and automatically delivers proper humidity levels continually; regardless of the temperature or conditions.

  • Know your relative humidity.
  • Know when your system is running.
  • Know when to replace your water panel™. (Evaporative Only)
  • Know immediately when service is needed.
  • Turn on the HVAC blower for humidification.


For some homes, a manual control may be recommended. The Aprilaire digital control can be used in manual mode. Still providing all the great benefits of the Automatic control that your customer wants:

  • Relative humidity percentage
  • When unit needs service
  • When unit needs maintenance
  • When unit is on and operating properly