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Aprilaire Maintenance Kit 4788

Aprilaire Humidifier Maintenance Kit 4788 helps ensure your Aprilaire Humidifier 400, 400A and 400M continues to perform at peak efficiency.

The maintenance kit 4788 contents include:

  • Water Panel 45 (2 pack)

  • Scale Control Insert 4403

  • Water Distribution Tray 4407

  • Float Assembly 4406

  • Feed Tube and Compression Sleeve 4335

  • Orifice 4231

  • Inline Strainer 4004

  • Owner's Manual

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$88.00
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Right Choice

Get it straight from the source!

  • Genuine Aprilaire replacement parts made by Aprilaire in Poynette Wisconsin U.S.A.

  • Made specifically for Aprilaire humidifier for best fit and performance

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  • Maintenance Kit #4788

    Posted by: Steve

    02/07/2013

    My maintenance kit came very well packed and very quickly. Everything in the description was included and it was very easy to install the parts. Great service!

  • Maintenance Kit 4788 for Aprilaire 400

    Posted by: RPS

    02/07/2013

    Great tuneup kit. It was a quick response and shipping from the manufacturer. Thank you

  • Perfect

    Posted by: Naniac

    02/04/2013

    I got my order right away, and the price was right. I have no complaints and will come back next year.

  • Maintenance Kit Purchase

    Posted by: Jim McDonald

    08/19/2011

    I had no trouble ordering this kit through the website. The box showed up promptly. Thank you.

  • Why would you pay someone to do this?

    Posted by: J.W. Strange

    08/18/2011

    Clear instructions, technically simple, essential maintenance for your humidifier that you'd be crazy to pay someone else to do.

  • 4788 Maintenance Kit For Aprilaire Model 400

    Posted by: TS

    02/01/2011

    They are easy to install by yourself to keep the system running without losing efficiency.

  • Glad to have a source

    Posted by: Lynn Scull

    09/22/2010

    It is such a pleasure to shop online to get these items. If you can find them instock in a store its a miracle. Even if the store can order them that's a pain in the neck.

  • 4788 Maintenance Kit

    Posted by: Joyce A

    08/03/2010

    no problem. Received all items in a timely manner and had them installed.