Honeywell Humidistat Humidifier Control-H8908B - The Home Depot
Discontinued

Honeywell

Model # H8908B

Internet # 100476731

Store SKU # 623194

Humidistat Humidifier Control


Honeywell Humidistat Humidifier Control
 

This item has been discontinued.
The Home Depot no longer carries this specific product.

$26.97 / each
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PRODUCT OVERVIEW

Model # H8908B

Internet # 100476731

Store SKU # 623194

The Honeywell Humidistat Humidifier Control provides low-voltage control for humidifiers in central heating and air conditioning systems. It can be mounted in the duct or on a wall surface. It features 12 in. of thin, moisture-sensitive nylon ribbon wound around 3 bobbins to provide optimum control and reliable operation under changing ambient. The control has a snap-acting, dust-proof switch.

  • Provides low-voltage control for humidifiers in central heating and air conditioning systems
  • 12 in. of thin, moisture-sensitive nylon ribbon wound around 3 bobbins to provide optimum control and reliable operation under changing ambient
  • Can be mounted in duct or on wall surface
  • Positive on and off settings
  • Snap-acting, dust-proof switch

SPECIFICATIONS

Dimensions
Assembled Depth (in.)  4.8 in  Assembled Height (in.)  2.7 in 
Assembled Width (in.)  3.7 in  Product Depth (in.) 
Product Height (in.)  3.75  Product Width (in.)  3.5 
Details
Accessory type  Humidistat (Humidifier Control)  Heating Product Type  Accessory 
Product Weight (lb.)  .5 lb  Returnable  90-Day 
Warranty / Certifications
Manufacturer Warranty  1 year limited warranty 

CUSTOMER REVIEWS

Rated 3.7 out of 5 by 7 reviewers.
Rated 4 out of 5 by -=*MUST CALIBRATE HUMIDISTAT*=- The 8908B humidistat needs to be calibrated correctly. You might notice that when you turn the knob to set the desired level that it "clicks" on and off around the 10% mark or at least at a point that is nowhere close to the actual humidity level inside your home. The clicking is the point at which the humidistat thinks that the humidity is inside your home. You will need a secondary hygrometer to figure out the exact level your house is at now. Make sure you buy a semi decent one that will itself be calibrated correctly. After calling honeywell they told me there was no way to calibrate the h8908b so I needed to figure out a way myself. To calibrate, take the humidistat of the wall or duct that you installed it on. On the back you will see a small white plastic bolt. There will be some red glue that you will need to scrape away to turn the bolt. I didn't need to scrape away all of it. Just enough so that the bolt would turn. Turn the bolt a bit and then turn the set knob on the front. You will see that the clicking has changed a bit. Keep going until it turns on off around the actual humidity level inside you home. Not sure why the calibration was so far off to begin with but this will definitely fix any issues you had with the humidity level your humidifier was throwing out. November 13, 2014
Rated 4 out of 5 by poor calibration, but otherwise seems ok Very poor Chinese factory calibration, but luckily can be adjusted by turning the small white plastic bolt. Factory "off" indicated at ~11% when room was actually over 30%. Has a hysteresis of ~8-10% (i.e., on at 30%, off at 38%). Mine squeaks when dial is turned, sometimes making it hard to hear the on/off clicks. Simple one-wire circuit interrupt. I like the wide range and honestly, the adjustability to recalibrate over time. Relatively inexpensive. February 4, 2013
Rated 3 out of 5 by Erroneous Product Description The product description erroneously states that "It features 12 in. of thin, moisture-sensitive nylon ribbon wound around 3 bobbins to provide optimum control and reliable operation under changing ambient." If it were true, you wouldn't be able to mount the product on a wall!! In addition, the installation manual does not show a ribbon nor does it mention it. Likewise, I checked several packages of the product in Home Depot and none had a ribbon!!!!!!!!!!! Furthermore, a search of the Internet fails to mention any such ribbon. Ribbons were used in older models in which the ribbon was inserted into the air duct to sense the humidity level. January 1, 2014
Rated 5 out of 5 by easy to install unit is accurate and cost effective. I plan to install four more units for climate control in our production areas. April 15, 2014
Rated 3 out of 5 by poduct is good for the price. the setting for humidity control do not match the actual humidity. Buy a humidity meter and adjust accordingly. Other wise I have been happy with eh purchase. January 22, 2014
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