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%)
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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

No complaints, product works great.

By Phrank

from Crystal Lake, Il.

About Me Retired homeowner

Verified Buyer

Pros

  • Durable
  • Energy Efficient
  • Good Fit

Cons

    Best Uses

    • Whole House Humidifiers

    Comments about Aprilaire #4655 Humidistat:

    The delivery was ahead of promised time.

     
    4.0

    Fast service, easy to install

    By Handyman

    from Jenisom, mi

    About Me Handyman

    Verified Buyer

    Pros

      Cons

        Best Uses

        • Whole House Humidifiers

        Comments about Aprilaire #4655 Humidistat:

        Fast service

         
        4.0

        It keeps you comfortable

        By lg

        from Hoffman Estates,Il

        About Me Homeowner

        Verified Buyer

        Pros

          Cons

            Best Uses

            • Whole House Humidifiers

            Comments about Aprilaire #4655 Humidistat:

            Replaced an "automatic" electronic humidistat with this unit. Much less expensive than unit it replaced and performs just as well.

             
            4.0

            Good product and service sofar

            By Chuck

            from Rensselaer, N.Y.

            About Me Handyman, Homeowner

            Verified Buyer

            Pros

            • Easy to install
            • Energy Efficient
            • Good Fit

            Cons

            • 1rst one only lasted 3yrs
            • Not Durable

            Best Uses

            • Whole House Humidifiers

            Comments about Aprilaire #4655 Humidistat:

            The Aprilaire humidistat works great,easy to install, however i had to replace the original one in just under 3 years. ordered online no problems at all.Over all happy with the Aprilaire humidifier and there service.

             
            5.0

            A Great Improvement over previous model

            By Stephen Home Handyman

            from St. Louis, MO

            About Me Handyman, Homeowner

            Verified Buyer

            Pros

            • Durable
            • Good Fit
            • Superior replacement

            Cons

              Best Uses

              • Whole House Humidifiers

              Comments about Aprilaire #4655 Humidistat:

              I had to replace a broken older model humidistat, and this one is designed to be much sturdier and long lasting. Internal parts are protected by metal cover, unlike older model which had parts exposed and prone to damage. A perfect fit to replace older model, too.

               
              5.0

              Exactly what I needed

              By Ron

              from West Bend, WI

              About Me Homeowner

              Verified Buyer

              Pros

              • Durable
              • Energy Efficient

              Cons

                Best Uses

                • Whole House Humidifiers

                Comments about Aprilaire #4655 Humidistat:

                I received this product in 3 days and installed it myself. My heating contractor wanted to charge me $267 for a part that cost [$]. He is no longer my heating contractor!!

                (2 of 2 customers found this review helpful)

                 
                3.0

                One part with short life

                By Paul K

                from Schenectady, NY

                About Me Homeowner

                Verified Buyer

                Pros

                • Energy Efficient
                • Good Fit

                Cons

                • Has failing switch
                • Not Durable

                Best Uses

                • Whole House Humidifiers

                Comments about Aprilaire #4655 Humidistat:

                This item replaced an identical item in which the micro switch failed after only two years. The one before that failed the same way after one year. Would be an excellent product if the switch was more durable.

                 
                3.0

                The part I was looking for

                By Mark

                from Steamboat Springs, CO

                About Me Homeowner

                Verified Buyer

                Pros

                • Good Fit

                Cons

                  Best Uses

                  • Whole House Humidifiers

                  Comments about Aprilaire #4655 Humidistat:

                  Ordered this humidistat as a replacement for one that failed. Was happy to find the exact model, so easy to replace. The failed unit was only in service for one year. Hope this one does better!
                  I was dissappointed with the first unit because, before it failed, it did a poor job of maintaining the set humidity level. Again, I hope this one does better!

                   
                  5.0

                  I would buy this product again

                  By Jimmy

                  from Cleveland, Ohio

                  About Me Homeowner

                  Verified Buyer

                  Pros

                  • Durable

                  Cons

                    Best Uses

                    • Whole House Humidifiers

                    Comments about Aprilaire #4655 Humidistat:

                    Very happy with the unit. Paid less than 1/2 the cost from a local company, even with shipping. I
                    would recommend this dealer

                     
                    4.0

                    Replaced the Orginal Humidistat

                    By Mike the Handyman

                    from Cincinnati, Ohio

                    About Me Homeowner

                    Verified Buyer

                    Pros

                      Cons

                        Best Uses

                        • Whole House Humidifiers

                        Comments about Aprilaire #4655 Humidistat:

                        This replaces an orginal humidistat that just stopped working, this one was easy to install and easy to operate. It is not a fancy one but it gets the job done. I have moved the settings up higher than the recommendations as it helps keep the static electicity down but it has not caused a problem with to much moisture in the house.

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