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Model RS25 Steam Humidifier

GFI#: 5547

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Replace your cylinder 1-2 times per season



  • 25-35 CPD 
  • Capacity 12 lbs./hr.
  • 230V
  • Electrode power cables:  12 AWG 
  • Power relays:  2-30 Amp on board 
  • Ground connection:  screw
  • For home sizes up to 6,000 sq. ft. (may vary with home construction, ceiling height and other factors)
  • 5-year limited warranty (parts only - units sold after January 1, 2016)
  • Unit size: 23.75" H x 13 1/8" W x 8.25" D 
  • 22 lbs
  • Pallet size: 16
  • Replacement steam cylinder: 35-14 (GFI #7524)
  • GFX3 Digital Automatic Humidistat
  • Conductivity range: 125 to 1250 us/cm / low conductivity model (test water for conductivity prior to selection) 
  • Water fill connection: 1/4" O.D. compression; adapter to 3/4" FPS
  • Water fill- instant flow: 0.09 - 0.16 gpm (0.35 - 0.60 l/min) 
  • Input water type: potable water (no demineralized or soften water)
  • Drain connection: .75" to air break into 1.25" O.D. (32 mm)
  • Drain water temperature: < 140º (< 60º C) 
  • Embedded fan flow: 71 cfm (120 m³/h
  • Self contained immersed electrode design
  • Integrated smart monitoring drain pump assembly
  • Multiple installation options:  Room mount – remote mount
  • Disposable steam generating cylinder
  • High water level and foam detection monitoring
  • Drain tempering
  • 20% adjustable capacity from rated max output
  • Integrated AHU fan relay for on demand humidification
  • LCD display with numerical and icon driven menu
  • Constant control monitoring and diagnostics
  • Pure sterile steam delivering premium indoor air quality

Your steam humidifier passes electric current between electrodes inside the unit's cylinder, heating the water within to create steam. The steam is then dispersed throughout your home for healthier, more comfortable air.

Breathe healthier with the GeneralAire® RS25 Whole House Elite Steam Humidifier working for you.
Video Support:
  1. Using the AP-2 to test water conductivity (essential step that should be taken prior to selecting a steam model)
*To purchase this unit, contact a your local authorized GeneralAire® wholesaler. For your safety and the longevity of your unit, be sure all maintenance is performed by a licensed contractor.
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