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Honeywell HE225H8908 (HE225H) Enviracaire Elite By-pass Humidifier

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Click here to see all parts for the Honeywell model HE225 humidifier

Part of Honeywell's whole-house air quality system  - Replaces Model HE225A1006.


  • Antimicrobial coating on pad prevents the surface growth and migration of bacteria, mold, fungus and algae on the humidifier pad.
  • Bold, new look with blue and white styling.
  • System yields 12 gallons per day (46 liters per day) to humidify a large area up to 3,000 sq. ft. (280 sq. m).
  • Small footprint, lightweight and reversible components allow for easy mounting on either warm air supply or cold air return of most forced air furnaces.
  • Components designed for quick maintenance and service.
  • Continuous flushing reduces the frequency of maintenance in a hard water installation.
  • 5 year warranty
The HE225H Humidifiers are controlled by the manual H8908ASPST manual humidity control that is installed either on an interior wall in the living area or on the return air duct.

Humidifier installation will require the following supplies (not included):
  • #8 sheet metal screws
  • 1/4" copper water line 
  • 1/2" ID clear vinyl tubing for drain
  • Small wire nuts
  • 6" start collar for bypass connection 
  • 6" 90 degree elbow for bypass connection 
  • 6" pipe for bypass connection 
  • 18-2 thermostat wire

Product Specifications:
Description  Bypass flow-through humidifier with H8908ASPST humidistat.
Application  Humidification
Type  Steam
Capacity (gal. per day)  12 gal. per day
Capacity (liter per day)  46 L per day
Voltage  120 Vac
Electrical Ratings  0.5A
Frequency  60 Hz
Color  White and Blue
Mounting  Duct or Remote Mount (up to 20 feet)
Temperature Range (C)  1.1C-40C
Plenum Opening (in.)  9 7/16 in. high x 9 5/18 in. wide
Plenum Opening (mm)  241 mm high x 238 mm wide
Dimensions (in.)  19 in. H x 11 1/4 in. W x 9 in. D
Dimensions (mm)  345 mm high x 305 mm wide x 232 mm deep
Approvals, Underwriters Laboratories Inc  UL/CUL Listed Report E185662
Includes  Bypass Flow-through Humidifier, summer shut-off damper humidifier pad, mounting template, self-piercing saddle valve 24 Vac transformer and wire, standard humidistat
Tradeline Value  Tradeline
Bypass Duct Opening (Diameter) (in.)  6 in.
Bypass Duct Opening (Diameter) (mm)  152 mm

We have packaged these supplies into our Bypass Type Humidifier Installation Kit

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