Aprilaire 12 (4-Pack) - Humidifier Water Panel

The Aprilaire #12 Water Panel is the genuine OEM replacement water panel for the Aprilaire humidifiers: 112, 136, 224, 440, 445 and 445A, 448. These humidifier water panels need to changed at least once per year.


The Aprilaire 4 Pack #12 Water Panel is the genuine OEM replacement water panel for the Aprilaire humidifiers: 112, 136, 224, 440, 445 and 445A, 448. 


When used with one of  the corresponding Aprilaire humidifiers listed above, the Aprilaire12 water panel is designed to last an entire season. Depending on how many seasons you use your humidifier, will determine how many times per year your water panel will need to be changed. Those who solely humidify during the winter season will only need to change the water panel once per year.

*Important Note: The change rate also depends on the hardness of your water. If you live in an area with hard water you may need to change the Aprilaire12 water panel more than once a season. 


The Aprilaire #12 water panel by Aprilaire is sized at 11-1/2" x 14-3/4" x 1-1/2" to ensure proper fit and optimal performance.  


Producing whole house humidification products since 1954, you can rest assured that Aprilaire products are manufactured with the highest standards in quality and reliability.



This product is made in the USA   


For additional savings please see the multipack selections of the product that can be found above.


What is a Water Panel?

A Humidifier Water Panel (sometimes referred to as a humidifier pad or humidifier filter) is the heart of your humidifier. It is made of layers of aluminum mesh with a porous, clay-like coating which allows the panel to soak up the water produced by the water distribution tray and turn it into humidity for your home. Without this porous material within the aluminum, the water would bead up on the metal and not be as effective at humidifying your home. As time goes on, the water starts to deteriorate the clay-like material and chunks begin to break off. Once you see signs of this wear, it is time for a change! Waiting to change your humidifier water panel after these signs can drastically effect the output of humidity your system produces!  If you have any questions regarding this product, please use the HVAC.com Contractor Directory to connect with a trusted contractor in your area.

  • Brand: Aprilaire
  • Genuine OEM Part: Yes
  • Type: Water Panel
  • Product Measurements: 14.75" x 11.38" x 1.63"
  • Humidifier: 112,136, 224, 440, 445 and 445A
  • Contains: 4 Water Panels
  • Aprilaire 12 (4-Pack) - Humidifier Water Panel