Honeywell TrueSTEAMT 9 Gallon Humidifier With TrueIAQ Control - HM509DG115

click to zoom


Honeywell TrueSTEAMT 9 Gallon Humidifier With TrueIAQ Control  - HM509DG115

The HM509DG115 9-Gallon Model includes a  TrueIAQ Humidistat Control.  The unit draws 10 Amps and a dedicated power supply is recommended..

About the TrueIAQ Control:
The TrueIAQ digital control provides a digital display, and automatic control based on outdoor temperatures.  This control ships with a (wired) outdoor temperature sensor.  The TrueIAQ can also be used to control your home's dehumidification and ventilation systems. 


  • TrueSTEAM works by producing its own steam independent of equipment operation, so your home gets moisture when you need it most.
  • TrueSTEAM is the most eco-friendly way to humidify your home, because it uses up to 70 percent less water while delivering more moisture than traditional whole-house humidifiers.
  • While other humidifiers rely on moisture-filled pads that can be susceptible to bacteria growth in the water and the airstream, TrueSTEAM delivers "true" steam - the cleanest form of humidification.
  • In addition to keeping your home and family comfortable, TrueSTEAM can help reduce heating bills. Because humidified air feels warmer, you'll be able to turn your thermostat down for savings.
  • Installs in minutes - Limited duct cutting and bracket-mount design takes less than 5 minutes to complete.
  • Easy maintenance - Self-regulates cleaning cycles throughout the year. Annual maintenance requires no tools to access and clean, saving time and money on annual contractor service calls. In-line water filter for scale and sediment also provided.
  • Application flexibility - Mount directly to the duct or remotely (with optional remote install kit) up to 20 feet away into tight-fitting or unconditioned air spaces.
  • 5-year warranty
  • Description  TrueSTEAM 9 gpd with TrueIAQ Humidistat Control
  • Application  Humidification -  Steam
  • Capacity (gal. per day)  9 gal. per day
  • Capacity (liter per day)  34 L per day
  • Voltage  120 Vac
  • Color  Empire Gray
  • Mounting  Duct or Remote Mount (up to 20 feet)
  • Temperature Range (F)  34F-104F
  • Temperature Range (C)  1.1C-40C
  • Plenum Opening (in.)  1 3/4 in. diameter
  • Plenum Opening (mm)  44.45 mm in diameter
  • Dimensions (in.)  19 in. H x 11 1/4 in. W x 9 in. D
  • Includes  Duct template hardware, saddle valve, humidistat, drain supply water tubing, duct nozzle, mounting bracket, water filter, backflow valve.