Honeywell H46C1166


Ventilator Dehumidification Control

H46C1166 686197
Average Rating: 4.8
Read Reviews (8) Write a Review
$39.36+ 10 Business Day Shipping $9.41

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Ventilator Dehumidification Control


ItemDehumidifier Controller
MountingWall mount
Adjustable Range20 to 80% RH
Differential (RH %)4 to 6
Voltage120 Vac,24 Vac,240 Vac
Contact Rating (Amps)7.5
Switch ActionCloses on Humidity Rise, Opens on Fall
Switch TypeSPST
Height (In.)4-3/4
Width (In.)3
Depth (In.)2-1/8
Agency ComplianceUL
Includes White Plastic Cover and Metal Adapter Plate for Vertical Switch Box Mounting, Wiring Diagram
Dimensions (in.)4 11/16 in. high x 2 15/16 in. wide x 2 1/8 in. deep
Dimensions (mm)119 mm high x 75 mm wide x 54 mm deep
Temperature Range (F)50 F to 125 F
Temperature Range (C)10 C to 52 C
Electrical Ratings120 Vac, Full Load: 7.5A; 120 Vac, Locked Rotor: 30.0A; 120 Vac, Resistive: 12.0A; 240 Vac, Full Load: 3.8A; 240 Vac, Locked Rotor: 15.0A; 240 Vac, Resistive: 6.0A
Tradeline ValueTradeline
Operating Humidity Range (% RH)20 to 80% RH
TypeHumidity Control
UPC 085267135924
Weight 1.000000


Humidity ControlsProvide user-set dew point control of humidification, dehumidification, or ventilation equipment.

Humidity Control, Mounting Location Switch Box, Adjustment Range 20 to 80 Percentage RH, Control Attic Ventilator Dehumidification Control, Contact AC Voltage Rating 24, 120, 240 Volts, Contact Current Rating 7.5 Amps, Switch Action Close, Differential 4 to 6 Percentage RH, Height 4 3/4 Inches, Depth 2 1/8 Inches, Width 3 Inches, Wall Mounted

Customer Reviews

Average Product Rating: 4.8
based on 8 reviews

Humidistat That Actually Works

Tuesday, July 24, 2012

I have two dehumidifiers in my home. Both have humidistat controls that stick in the "on" mode. I have purchased three replacements from the manufacturer and they all have the same problem. The Honeywell H46C1166 actually works and cost half as much. Much to my surprise, the calibration is even fairly good. The only remaining question is longevity and only time will tell.

Well made and inexpensive

Submitted by ssmiller47

Dehumidistat Just Right

Friday, March 16, 2012

Received product promptly. Installed it and it is just as described and just as I wanted. Directions for use and wiring were concise and product performed well.

Price was reasonable and it came from a reputable company

Installation onto wall was a bit tricky as you needed to use a back plate that they said was only used with electric boxes

Submitted by kevstar

Get A Sense of Humidity

Tuesday, January 17, 2012

It is going to be hard to review this unit. I have not installed it yet but my friend and lawyer got one for his home in Florida and it saves big bucks on AC in the summer when he is away. So I have the same thing going for me and I got one.

It can stop the home from getting moldy in the summer when we are away

Could use a upgrade to digital read out

Submitted by Jerome H

Everything I Asked For, Quickly

Friday, May 27, 2011

I will order from DrillSpot again.

We have a home in Florida and it will go there. I have not installed it yet

Submitted by Richard L L

Humidity Control Dehumidistat

Thursday, April 21, 2011

Just what I works great!!!

Submitted by Les Seidman

Easy to use!

Thursday, April 14, 2011

Great product, easy to install despite the instructions!! An absolute requirement for snowbirds...set it to have the AC kick on at a certain humidity level while you're away, and it will keep the house humidity low so clothes and carpets don't get all musty!

The ease of use, one dial, no digital stuff

The installation instructions are a bit difficult for a novice to understand

Submitted by Ken R

Fast Shipping, Thanks!

Monday, November 15, 2010

Works as expected.

Submitted by Andrew R R

Honeywell Dehumidistat, H46C1166 Review

Tuesday, August 24, 2010

Seemed to work fine while we were away.

Fairly easy to install using our present furnace wiring

Submitted by Ronald T. C
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