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Honeywell HE105 - User Manual

Honeywell HE105
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INSTALLATION INSTRUCTIONS
33-00229EF-01
HE105, HE205
Whole Home Bypass Humidifier
APPLICATION
This kit contains your new Honeywell HE105 or HE205
Humidifier, H8908 Humidistat and all the accessories
required for installation.
How Your Humidifier Works
Your Honeywell humidifier uses the principle that vapor
(evaporated water) is created when warm air blows over a
water-soaked area. As the vapor circulates, the relative
humidity rises.
Your humidity control monitors the relative humidity and
activates the humidifier accordingly. The humidifier has a
water supply that dispenses water evenly over a humidifier
pad. The warm dry air from the furnace passes over the
humidifier pad and picks up the moist air to circulate it
throughout your home.
Humidified air feels warmer and more comfortable so you
may be able to lower your thermostat heating setpoint,
which saves money on your heating fuel bills. The end
result is that your humidifier gives you a comfortable
environment that is also energy efficient.
Need Help?
For assistance with this product please visit
http://yourhome.honeywell.com or call Honeywell
Customer Care toll-free at 1-800-468-1502.
PREPARING FOR THE
INSTALLATION
Be sure to identify all the required (Table 1) accessories
(included) and make sure the appropriate tools are
available before beginning the installation.
Included in the box:
Humidifier
H8908 Humidistat
Plug-in transformer
Canadian “C” models also include:
6 in. dia. bypass ducting (24 in.)
18 gauge thermostat wire (20 ft.)
1/4 in. (6.35 mm) OD feed water tubing (20 ft.)
1/2 in. (12.7 mm) ID drain tubing (10 ft.)
Saddle valve
Required Tools
Tools required for installation include:
•Tin snip
Screwdriver
•Pliers
Adjustable or open-end wrench
•Drill
Level
3/4 in. (19 mm) sheet metal drill bit
SPECIFICATIONS
Model specific specifications are shown in Table 1.
Operating Ambient Temperature
:
41 to 113 °F (5 to 45 °C)
Power Supply: 24 VAC / 60 Hz.
Power Consumption: 7 Watts with 24 Vrms
Water Pressure: 40 to 120 psi.
Orifice Output: .02 in. (0.5 mm)
Flow Rate at Nozzle: 4.7 GPH (18 L/hr.) under 120 psi
Table 1. Specifications.
Model
Size
length × width × depth
Duct Opening
H × W Pad Size
Evaporation
Output
HE105
15.16 × 16.57 × 9.47 in.
(385 × 421 × 240 mm)
9.43 × 9.28 in.
(240 × 236 mm)
10 × 9.5 × 1.5 in.
(254 × 241 × 38.1 mm)
12 GPD
HE205
18.30 × 17.11 × 9.59 in.
(465 × 434 × 243 mm)
12.63 × 9.68 in.
(321 × 246 mm)
13.125 × 10 × 1.5 in.
(333 × 254 × 38.1 mm)
17 GPD

Questions and Answers

  • D
    Donna AguilarJul 27, 2025
    What to do if my Honeywell Humidifier is leaking water?
    • R
      Rebecca ArellanoJul 27, 2025
      If your Honeywell Humidifier is leaking water: * Check for leaking joints and tighten connections after shutting off the water. * Verify that brass tubing inserts are used. * Ensure that the rubber pad is installed on the saddle valve to prevent leaks.
  • I
    ibryantAug 2, 2025
    What to do if my Honeywell HE105 Humidifier has low humidity?
    • K
      Kevin PhillipsAug 2, 2025
      If your Honeywell Humidifier is showing low humidity, there are several potential causes and solutions: * The furnace blower might not be operating. Try resetting the circuit breaker or checking for a blown fuse. Ensure the furnace power is on and inspect all external wiring connections. Also, verify the humidity control setting. If problems persist, consider calling a professional heating contractor. * Rapid air changes or drafts can also lead to low humidity. Keep doors and windows closed, close the fireplace damper when it's not in use, minimize exhaust fan running time, and seal around doors and windows. * Check that the damper is in the 'open' position to allow humidification.
  • D
    david52Aug 14, 2025
    How to fix air leakage in a Honeywell Humidifier?
    • J
      Jimmy DeanAug 14, 2025
      To fix air leakage in your Honeywell Humidifier, check the duct joints and seal them with foil tape.
  • A
    Ashley HobbsAug 20, 2025
    Why is my Honeywell HE105 producing high humidity?
    • R
      Robin CraigAug 20, 2025
      If your Honeywell Humidifier is causing high humidity: * If you notice condensation on the walls, turn off the humidity control and water supply until the condensation evaporates completely. * If there's heavy condensation on the windows, lower the humidity control setting to eliminate condensation caused by moisture from activities like bathing, mopping, or cooking. If moisture continues, increased ventilation is necessary.
  • M
    Melissa ParkNov 7, 2025
    What to do if my Honeywell HE105 has no water to drain?
    • A
      annaguilarNov 7, 2025
      If your Honeywell Humidifier has no water to drain, consider the following troubleshooting steps: * **Electrical Issues:** Verify the control circuit wiring and check all connections. * **Humidistat:** Turn the humidistat up and down, listening for a clicking sound, which indicates contact. * **Humidifier Power:** Make sure the outlet has power. * **Solenoid:** After checking other wiring, turn on the furnace fan, adjust the humidistat, and listen for the solenoid to click. * **Plumbing:** Check plumbing connections for kinks or other obstructions. * **Saddle Valve:** Ensure the needle pierces the water line and then backs out to open the valve. * **Humidifier Itself:** Remove the cover and confirm that water flows into the distribution tray. * **Drain Tubing:** Check for ...

Summary

APPLICATION

How Your Humidifier Works

Explains the principle of operation for the humidifier using evaporation.

Need Help?

Provides contact information for customer support and product assistance.

INSTALLATION INSTRUCTIONS

PREPARING FOR THE INSTALLATION

Guides users on identifying required accessories and tools before starting installation.

SPECIFICATIONS

Details technical specifications like operating temperature, power, water pressure, and flow rate.

Safety Definitions

Safety Precautions

Advises users to read and understand safety hazards before installation or use.

Determining Best Location for Humidifier

Provides guidance on selecting the optimal location for humidifier installation.

Selecting Location for Humidistat

INSTALLATION

Connecting Bypass Ducting

Connecting the Plumbing

WIRING

TESTING HUMIDIFIER OPERATION

OPERATION

Controlling Your Humidity Settings

Explains how to use the H8908 Humidistat to control humidity levels.

End of Humidification Season

Provides steps for shutting down and cleaning the humidifier at season's end.

Replacement Humidifier Pads

Recommends annual replacement of humidifier pads and lists part numbers.

MAINTAINING YOUR HUMIDIFIER

TROUBLESHOOTING YOUR HUMIDIFIER

LIMITED FIVE-YEAR WARRANTY

Honeywell HE105 Specifications

General IconGeneral
BrandHoneywell
ModelHE105
CategoryHumidifier
LanguageEnglish

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