Lennox Healthy Climate Y2788 - WP3-18 Fan Powered Humidifier 18 GPD with Manual Humidistat

Lennox Healthy Climate Y2788 (WP3-18) Whole Home, Fan Powered, Manual Humidifier humidifies homes up to 4,200 square feet and delivers up to 18 gallons per day.

The Lennox Y2788 (WP3-18) is a whole home, fan powered humidifier with manual control. It delivers an 18 gallon per day output and  can humidify a home up to 4,200 square feet.  This unit mounts directly to the duct of your heating and cooling system, allowing the humidity to be placed into the airflow and distributed evenly throughout the home. The Lennox Y2788 humidifier hooks up to a water line so you do not need to worry about filling it multiple times a day. With a built-in fan, the humidifier pulls warm air directly from the furnace, increasing its effectiveness.


The Power Humidifier uses an evaporation humidification process which optimizes the distribution of moisture creating a  perfect balance of humidity throughout your home or office. With a better balance of humidity you will be able to prevent the build up of bacteria, mold, and minerals that lead to common skin irritation and respiratory problems. Your Lennox Healthy Climate WP3-18 humidifier also helps keep your home in great condition, from hardwood floors to wallpaper.


Benefits of Evaporative Humidification

  • Prevents Flu and Allergies
  • Neutralizes Static Electricity
  • Reduces Pet Dander and Discomfort
  • Protects Fine Furniture and Wood Floors
  • Relieves Dry Skin & Scratchy Throats
  • Reduces Heating Costs


For electrical reference, this unit operates on 120 Volts at 60Hz with a .8 AMP requirement.  Due to the nature of evaporative humidification this unit can be installed on either the supply or return duct of the heating and cooling system. If the Lennox humidifier is being installed on a heat pump system it is best to hook the unit up to a hot water line.


Using a genuine Lennox #X2661 water panel is highly suggested.  This water panel was designed specifically for the Lennox Y2788 humidifier and provides the most comfortable and efficient output. Don't trust the aftermarket products to provide the same quality and overall experience as the genuine #X2661 water panel.


If you have any questions regarding this product, please use the HVAC.com Contractor Directory to connect with a trusted contractor in your area.

  • Brand: Lennox Healthy Climate
  • Genuine OEM Part: Yes
  • Nominal Size: 16" Square
  • Actual Size: 21.15" x 25.90" x 3.93"
  • Mounting Surface 10 5/8" Protusion From Mounting Surface
  • Installation Required: Yes
  • Also Known As: HCWP3-18
  • Humidistat: Manual
  • Lennox Healthy Climate Y2788 - WP3-18 Fan Powered Humidifier 18 GPD with Manual Humidistat