ProThermostats.com > Aprilaire #58 Humidistat

Aprilaire #58 Humidistat

Aprilaire #58 Humidistat

About This Product

MFG: Aprilaire
MFG#: 58
Our#: 171318

REPLACED BY MODEL # 60

The new Aprilaire # 58 automatic humidifier control works in conjunction with your furnace to control the operation of the humidifier.  The control senses indoor RH and outdoor temperature and automatically adjusts the operation time of the humidifier to provide the optimum humidity level in the home.  The digitial readout on the control displays the RH level inside the cold air return.  Can also be used in manual mode when it is not possible to run wire to outdoor sensor.  MOUNTS ON RETURN DUCTWORK

New lighted display includes indoor relative humidity readout, service indicator light, water panel change light, and "on" indicator light

NOTE: control must be continously powered for proper functionality - separate 24 volt transformer may be required.

In order for the humidifier to operate, the furnace blower must be running and the humidifier control must be calling for humidity.  There are several different ways to detect blower operation - see installation instructions for details.  24 VAC is also required between W/G and Cf terminals.  See support addendum for details.

TYPICAL WIRING - USING FURNACE TERMINALS TO DETERMINE BLOWER OPERATION




Includes:

* Control
* Outdoor Sensor
* Manual Mode Resistor
* Manual Mode Sticker
* Installation Instructions
* Owners Manual

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

Unit dimensions - 5 15/*16" W X 4 1/4"" H
Requires round 3/4" hole for duct mounting.

Note - remote sensor can be purchased separately

REVIEW SNAPSHOT®

by PowerReviews
Aprilaire #58 Humidistat
 
4.8

(based on 27 reviews)

100%

of respondents would recommend this to a friend.

Pros

  • Adjustable settings (8)
  • Easy to use (8)
  • Energy efficient (8)
  • Durable (5)
  • Good size/fit (5)

Cons

    Best Uses

    • Whole house humidifiers (11)
    • Dry winter (9)
      • Reviewer Profile:
      • Homeowner (25), Avid do-it-yourselfer (8), Professional (3)

    Reviewed by 27 customers

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    Displaying reviews 21-27

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    5.0

    Accurate humidity control

    By Joe

    from Michigan

    About Me Homeowner, Professional

    Verified Buyer

    Pros

    • Adjustable Settings
    • Easy To Use
    • Quiet

    Cons

      Best Uses

      • Bedroom
      • Dry Winter
      • Help With Ailments
      • Living Room

      Comments about Aprilaire #58 Humidistat:

      Much better than the mechanical one I had previously. Very precise and accurate.

      Service and delivery comments:

      Speedy efficient delivery

       
      5.0

      Product is just as advertised

      By Eric

      from Chicago, Illinois

      About Me Homeowner

      Verified Buyer

      Pros

      • Easy To Use

      Cons

        Best Uses

          Comments about Aprilaire #58 Humidistat:

          [...]

           
          5.0

          Right part

          By none

          from michigan

          About Me Handyman, Homeowner

          Verified Buyer

          Pros

            Cons

              Best Uses

              • Dry Winter

              Comments about Aprilaire #58 Humidistat:

              Good price. [...]. Right part. No problems.

               
              5.0

              perfect

              By Gary

              from Springfield IL

              About Me Homeowner, Professional

              Verified Buyer

              Pros

              • Adjustable Settings
              • Energy Efficient
              • Lightweight
              • Quiet

              Cons

                Best Uses

                  Comments about Aprilaire #58 Humidistat:

                  the product is automatic that is just great!!!!

                  (1 of 1 customers found this review helpful)

                   
                  4.0

                  WOrks greate

                  By Matt

                  from McKinney, TX

                  About Me Handyman, Homeowner

                  Verified Buyer

                  Pros

                  • Adjustable Settings
                  • Quiet

                  Cons

                    Best Uses

                    • Dry Winter

                    Comments about Aprilaire #58 Humidistat:

                    Works great

                    (5 of 6 customers found this review helpful)

                     
                    4.0

                    Good Humidistat

                    By Handyman Bryan

                    from Michigan

                    About Me Handyman, Homeowner

                    Verified Buyer

                    Pros

                    • Easily Understood Instructions
                    • Nice LED backlit display
                    • Simple Interface

                    Cons

                    • Had to do some re-wiring

                    Best Uses

                    • Cold Climates
                    • Dry Climates

                    Comments about Aprilaire #58 Humidistat:

                    I bought this to replace my failing Aprilaire #56 humidistat. After doing some homework and contacting a local heating/cooling shop, I found out that the #56 model was garbage to begin with and nobody even stocks them anymore. So I decided to upgrade to the #58. I was happy to see that eventhough this humidistat has a nice display, they didn't raise the price from what they were charging for my old broken one. Installation was not to big of a deal since I was replacing an old one. The only big difference is that this unit requires a constant 24v source whereas the old one did not. To make it work I had to go down to my local electical supplier and buy a 120v to 24v converter (about $20) and wire it in off of the incoming power to the furnace blower area. I was thinking I needed this "special converter" but it turns out that the converter is the same voltage as a door bell converter...go figure. I've been using this for about 2 months now and it seems to be working nicely.

                    (3 of 5 customers found this review helpful)

                     
                    5.0

                    Great product

                    By Happy Homeowner

                    from Virginia

                    About Me Homeowner

                    Verified Buyer

                    Pros

                    • Attractive Design
                    • Easily Understood Instructions
                    • Simple Interface

                    Cons

                      Best Uses

                      • Cold Climates
                      • Dry Climates

                      Comments about Aprilaire #58 Humidistat:

                      I purchased the April Air 600A a couple months ago. Although pretty much a straight forward install, You will have to do some measuring,have some sheetmetal cutting tools, and be comfortable with running some electrical from the humidistat to your hvac unit. After a couple adjustments to get the humidity level where we wanted, we ran the unit with no problems for the remainder of the heating season.
                      As for the automatic control, I would definately get it. That way you don't have to mess with having to re-adjust your settings every time the weather changes.
                      It definately works well. After a couple days, the humidity level came up in our house and we stopped getting shocked by everything we touched.

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