ProThermostats.com > Aprilaire #4655 Humidistat

Aprilaire #4655 Humidistat

Aprilaire #4655 Humidistat

About This Product

MFG: Aprilaire
MFG#: 4655
Our#: 171317
The Aprilaire 4655 Humidistat is designed for low voltage service to control humidification equipment. An increase in relative humidity expands the nylon ribbon which opens the control switch to stop operation of the humidifier. A decrease in relative humidity reverses the process and closes the control switch.  Can be wall mounted or mounted on return plenum.  Includes plenum cutout template (4 5/32" X 2 7/16").  For duct mount, locate at least 6" upstream of humidifier, humidifier bypass ductwork or fresh air intake ductwork.

Specifications

Range - 15% to 50%

Operating Differential - 8% RH Maximum

Dimensions - 5 1/8" W X 3 3/8" H X 1 15/16" D

Electrical Data -

SPST Switch
2 Wires
24 VAC
Max. Load (contacts) - 5.2 Amps

For use with models: 110, 112, 220, 224, 350, 360, 400, 440, 445, 445A, 448, 500, 550, 558, 560, 560A, 568, 600, 700, 760, 760A and 768

ProThermostats.com Price:

$35.26

Regular $49.95, You Save $14.69 (29%)
In Stock

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REVIEW SNAPSHOT®

by PowerReviews
Aprilaire #4655 Humidistat
 
4.3

(based on 55 reviews)

91%

of respondents would recommend this to a friend.

Pros

  • Good size/fit (16)
  • Adjustable settings (14)
  • Easy to use (10)
  • Energy efficient (9)
  • Durable (8)

Cons

  • Not durable (4)

Best Uses

  • Whole house humidifiers (29)
  • Dry winter (14)
    • Reviewer Profile:
    • Homeowner (48), Avid do-it-yourselfer (6)

Reviewed by 55 customers

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5.0

Exceptional service..great value!

By John the Swede

from Minnesota

Verified Buyer

Pros

    Cons

      Best Uses

      • Whole House Humidifiers

      Comments about Aprilaire #4655 Humidistat:

      Very helpful customer service helped diagnose problem. [...] Very cost effective.

      (1 of 1 customers found this review helpful)

       
      4.0

      Repeat customer

      By hungry tech

      from hicksville,ny

      About Me Professional

      Verified Buyer

      Pros

      • Easy to install
      • For money can't beat it
      • Good Fit

      Cons

        Best Uses

        • Whole House Humidifiers

        Comments about Aprilaire #4655 Humidistat:

        I'm a heating tech in ny my mother needed a replacement for her digital humidifier control. I think simple is best so this control was perfect.

         
        5.0

        Perfect replacement

        By Larry

        from Minnesota

        About Me Handyman, Homeowner

        Verified Buyer

        Pros

        • Good Fit

        Cons

          Best Uses

          • Whole House Humidifiers

          Comments about Aprilaire #4655 Humidistat:

          I needed a replacement Humidistat. I should have replaced this years ago. Simple installation. Anyone can do it.

           
          5.0

          Excellent Purchase

          By MO

          from Chicagoland

          About Me Handyman, Homeowner

          Verified Buyer

          Pros

          • Durable
          • Energy Efficient
          • Good Fit

          Cons

            Best Uses

            • Whole House Humidifiers

            Comments about Aprilaire #4655 Humidistat:

            A much needed replacement item for our system, which is working well.

             
            4.0

            worked and looked great

            By brock the buckey

            from ohio

            About Me Homeowner

            Verified Buyer

            Pros

            • Good Fit
            • Looked good

            Cons

              Best Uses

              • Whole House Humidifiers

              Comments about Aprilaire #4655 Humidistat:

              fit over old outdated system perfectly. looks and works much better

               
              5.0

              Excellent

              By Joel

              from Godfrey, Il

              About Me Homeowner

              Verified Buyer

              Pros

                Cons

                  Best Uses

                  • Whole House Humidifiers

                  Comments about Aprilaire #4655 Humidistat:

                  perfect fit

                   
                  4.0

                  Replacement for older unit

                  By Dean

                  from Michigan

                  About Me Homeowner

                  Verified Buyer

                  Pros

                    Cons

                      Best Uses

                      • Whole House Humidifiers

                      Comments about Aprilaire #4655 Humidistat:

                      Had to resize hole on return air duct to replace old unit. Due to location this was a little tricky, but that would be a problem created by the original installer. However, some sort of adapter plate would be a handy accessory.

                      (1 of 1 customers found this review helpful)

                       
                      5.0

                      Easy to Install

                      By cdb

                      from michigan

                      About Me Homeowner

                      Verified Buyer

                      Pros

                      • Durable
                      • Good Fit

                      Cons

                        Best Uses

                          Comments about Aprilaire #4655 Humidistat:

                          Replaced a very old humidistat with this model. Very easy to install and works much better than the old one.

                           
                          4.0

                          Unit worked

                          By Briguy

                          from Fort Wayne, IN

                          About Me Homeowner

                          Verified Buyer

                          Pros

                          • Durable
                          • Good Fit

                          Cons

                            Best Uses

                              Comments about Aprilaire #4655 Humidistat:

                              This unit was fairly easy to hookup and came with wall anchors. This was the cheapest place that I could find on the internet that looked have way legit with my credit card information.

                               
                              4.0

                              Humidistat replacement

                              By Brian

                              from St. Charles, MO

                              About Me Homeowner

                              Verified Buyer

                              Pros

                              • Good Fit

                              Cons

                                Best Uses

                                • Whole House Humidifiers

                                Comments about Aprilaire #4655 Humidistat:

                                Very easy to replace

                                Displaying reviews 21-30

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