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Honeywell Whole House Bypass Humidifier (HE240)

Honeywell HE240 Whole House Bypass Humidifier

Model: HE240A2001/U | SKU: ho3508
List Price: $199.95
ON SALE! $159.95
Limited Time Offer
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  • FREE 2 Day Express Shipping
  • In Stock - Order Now. Your item will ship Tuesday, Mar 31st

Special Offers
Additional Warranty Options Available
1-Year Extended Warranty (Product Replacement) ($19.95) Details
2-Year Extended Warranty (Product Replacement) ($26.95) Details
  • Product Overview

    Creaky floors, static shocks, dry skin, irritated breathing passages - dry winter air can trigger a number of uncomfortable side effects. While portable tabletop humidifiers provide temporary relief, they're usually only large enough to cover a single room or small area and they may require lots of maintenance. Fortunately, Honeywell has created a better way. Stop dry air from wreaking havoc on your indoor comfort with the Honeywell HE240 Bypass Flow-Through Humidifier!

    How It Works

    The Honeywell HE240 Humidifier is a whole house humidifier that works with your forced-furnace to distribute comfortable humidity throughout your entire home. It installs easily onto the warm air supply or return air duct of your furnace and hooks to a drain line with simple DIY installation. To operate, warm air from your furnace blows over a water-soaked evaporator pad and wicks up moisture, creating a moisture-rich vapor. Warm humidified air is then propelled out through your air ducts to circulate throughout all the rooms of your home. The HE240 includes an easy-to-use humidity control that monitors your home's relative humidity and activates the humidifier should it fall below your set humidity level.

    Clean Humidity for Up to 3,000 Square Feet

    The Honeywell HE240 Whole House Bypass Humidifier is designed to humidify homes as large as 3,000 square feet, putting out roughly 16 gallons of moisture per day. Its flow-through design helps keep the unit clean of microorganisms by routinely rinsing and draining itself instead of drawing stagnant water from a reservoir. Plus, the evaporator pad helps filter out minerals from hard water and other impurities for cleaner moisture. These features contribute to less maintenance and less of a headache throughout the humidifying season.  

    Additional Benefits and Features

    • PerfectFLO Water Distribution - Honeywell's unique PerfectFLO system optimizes water usage and efficiency for low-cost humidifying.
    • Easy DIY Installation - Easy step-by-step installation instructions and all the parts you'll need are included. Plus, there's an online installation video available for reference.
    • Protects Your Interior - Properly humidified air helps protect your wood floors and furnishings from damage.
    • Low Maintenance - Flow-through humidifiers typically require cleaning and replacement evaporator pads just once a year, depending on your water quality.
    • Saves Energy - Improved humidity can actually make it feel warmer indoors. That means you can turn your thermostat up a few degrees. 

    What You'll Need for Installation

    The installation kit for this model is included. But you'll also need the following items:

    • Forced-Air Furnace
    • Floor Drain in Furnace Room
    • Tin Snip
    • Screwdriver
    • Adjustable or Open-End Wrench
    • Drill
    • ¾-inch (19mm) sheet metal drill bit
    • Level
    • Marking Pen or Pencil


    Stop uncomfortable dry air symptoms during the winter months with one easy-to-install solution - the Honeywell HE240 Whole House Bypass Humidifier.

    What Customers Love

    • Easy DIY Installation - An installation kit with all the parts you need is included as well as easy-to-follow instructions. Plus, Honeywell has an online installation video available.
    • Set It and Forget It - Set your desired humidity level on the humidity control and the humidifier will run only when needed. No need to turn it on and off manually.

    Things To Consider

    • Have Hard Water? - If you have hard water, keep in mind that you might have to perform more frequent maintenance to keep this humidifier running optimally.

    Manufacturer's Warranty

    1-Year-Limited Warranty

    Manufacturer's Literature

    Owner's Manual
    Owner's Manual and Installation Guide

    What's In The Box?

    • Honeywell HE240 Bypass Flow-Through Humidifier
    • Honeywell H8908 Humidistat
    • Evaporator Pad
    • Installation Kit
    • Installation Guide and Owner's Manual

    View All Humidifiers »
  • Specifications

    Humidifier TechnologyEvaporative
    Type of HumidifierCool Mist
    Coverage Area3000 sq. ft.
    Ideal ForWhole House
    Height15.3 in.
    Width15.72 in.
    Depth9.47 in.
    Weight9 lbs.
    Moisture Output Per Day16 gallons
    Humidistat Yes
    Humidity DisplayNo
    Mist Output ControlYes
    Programmable TimerNo
    Wick FilterYes
    Frequency of Filter ReplacementsReplace annually
    Air FiltrationNo
    Germ ProtectionNo
    Demineralization CartridgeNo
    Medicine CupNo
    Voltage110-120 V
  • Product Q&A

    Have a shipping or payment-related question?
  • Reviews

    View All Honeywell Whole House Bypass Humidifier (HE240) Reviews


    by PowerReviews
    Honeywell Whole House Bypass Humidifier (HE240)

    (based on 1 review)

    Ratings Distribution

    • 5 Stars



    • 4 Stars



    • 3 Stars



    • 2 Stars



    • 1 Stars



    Reviewed by 1 customer

    Displaying review 1

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    It is a good humidifier

    By Ben

    from Schoolcraft Twp, MI

    About Me Handyman, Homeowner

    Verified Buyer


    • Adjustable Settings
    • Diy Installation
    • Easy to Install
    • Easy To Use
    • Lightweight
    • Price
    • Quiet


      Best Uses

      • Dry Winter

      Comments about Honeywell Whole House Bypass Humidifier (HE240):

      It took a little longer to install than it should have, but I am 77 and slower than I used to be. I also had to add a breaker and an outlet for it and the condensate pump that I installed for the drain. It is working great though. No more nose-bleeds!

      Displaying review 1

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