Aprilaire Humidifier Replacement Guide

HVAC Logo IconBy HVAC.comAugust 1, 2023
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Close up of aroma oil diffuser on the table at home, steam from humidifier, houseplant in pot on background, daylight. Increase in air humidity indoors, comfortable living conditions.Copy space

Do you have an old Aprilaire humidifier that is over warranty and beyond repair? Companies come out with new models and series of products all the time, constantly trying to make their products more user friendly, efficient and effective. However, that becomes troublesome when you look to replace your current humidifier and find that it is no longer manufactured. Below is a guide to show you what new Aprilaire humidifier model replaces your old model.

New Aprilaire Replacement ModelsOld Aprilaire Models
700 Automatic / 700 Manual110, 112, 700, 760, & 768
600 Automatic / 600 Manual220, 224, 440, 568, & 560
500 Automatic500 & 550
400 Automatic445

Okay, so you see the new model that replaces your old Aprilaire humidifer, but will it fit the hole that is already in your ductwork? Great Question… Below we have the Plenum Opening (or opening in duct work) sizes so you can be sure you are getting the best replacement for your home.

Aprialire Model NumberWidth MeasurementHeight Measurement
110135811 1316
11219 3812 1516
22010 1811″
22415″12 38
400 Automatic & 400 Manual9 3412 12
44013 3411 14
44513 3411 14
550, 500 Automatic, & 500 Manual9 389 12
5609 3412 12
5689 3412 12
600 Automatic & 600 Manual9 3412 12
700 Automatic & 700 Manual14 7814 316
76014 7814 316
76814 7814 316
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