Steam Humidifier Honeywell

  • Rating
  • Capacity9 gallons/day, 12 gallons/day
  • Temperature Range34°F – 104°F
  • Warranty5-Year Limited*
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Why do so many people prefer Lennox HVAC systems to other brands? All the reasons would be hard to count. Lennox products are among the most efficient and reliable on the market. This is not a kind of Lennox commercial, just a constatation of mere facts.

Considering the below about Lennox HVAC units will help do the math:

  • Lennox air conditioners offer industry-leading efficiencies of up to 26 SEER (Seasonal Energy Efficiency Ratio);
  • Lennox heating and air conditioning systems last an average of 10 to 12 years, offering quality Lennox complete heat control. Lennox heat pumps can live even longer if properly maintained;
  • Lennox PureAir systems reduce ozone, a known lung irritant;
  • Lennox humidifiers – including Steam, Bypass or Power – help maintain proper moisture levels, operating efficiently and using nearly all the water it takes in;
  • Lennox heaters are available in multiple types & varieties, such as unit, gas, water, hanging heaters and even more.
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Honeywell TrueSTEAM direct-injection humidifiers provide the high performance and efficiency of steam humidification with easier maintenance than traditional humidifiers. The patented Condensate Collect Dome and beveled nozzle keep water in the tank, delivering only true steam into your duct?s airflow. TrueSTEAM provides your home with high-capacity true humidity, while using up to 70% less water than flow-through humidifiers. It automatically fills with water and drains when needed, so you don?t have to remember to do it. On top of that, TrueSTEAM actually controls your homes HVAC equipment for maintaining desirable humidity levels in your home year-round. Wiring to your HVAC equipment allows TrueSTEAM to supply humidity when you need it by turning on your equipment automatically. TrueSTEAM has the built-in intelligence to shut down when humidity is not needed for an extended period. After 48 hours of inactivity, TrueSTEAM will drain its tank and remain empty until it is needed again. This prevents water from stagnating within the tank. Maintenance is also made simple with the TrueSTEAM just remove the water tank for cleaning. TrueSTEAM’s internal system diagnostics monitor system operation and maintenance schedules as well as system faults. The LED light panel on the TrueSTEAM lets you know that the humidifier is operating correctly, when maintenance is needed, and when it is safe to remove the tank for cleaning. The push buttons allow the tank to be drained for cleaning, and quickly return to operation when the tank is reattached to the humidifier.


  • Application flexibility – Mount directly to the duct or remotely up to 20 feet away into tight-fitting or unconditioned air spaces
  • Installs in minutes – Limited duct cutting and bracket-mount design takes less than 5 minutes to complete.
  • Provides humidity independent of equipment operation, allowing homeowners to reach their desired humidity setpoints regardless of air temperature.
  • Uses up to 70 percent less water to produce even more moisture than traditional whole-house humidifiers.
  • Requires only a 1-3/4″ cut into ductwork and mounts on a separate, lightweight bracket (included) for accurate leveling.
  • Push terminals for easy wiring are routed through an interior harness so no wires are exposed.
  • LED lights indicate when system is running or needs service. Lights also provide feedback to the installer during installation.
  • Multiple sensors sit in a separate compartment to accurately monitor water levels.
  • 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.

*5-Year Limited Warranty on covered components


  • ModelHM509H8908
  • Product TypeHumidifier w/Control
  • Width11-1/4″
  • Height (Inches)9″
  • ColorEmpire Gray
  • Length (Inches)19″
  • ApplicationAir Quality
  • MountDuct or Remote (up to 20 FT)
  • Voltage120v
  • TypeSteam
  • Capacity9 Gallons/day
  • ControlH8908 manual humidistat
  • Temperature Range (F)34°F – 104°F
Steam Humidifier Honeywell
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*Product With Installation
*Product With Installation

A Honeywell steam humidifier is a cool little gadget that attaches to your furnace and pumps moisture into the air in your house. It works by boiling water to create steam, which gets spread throughout your home via your ductwork. This is especially helpful during the winter when indoor heating can make the air inside your house super dry.

Additional information


9 gallons/day, 12 gallons/day


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