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Aprilaire 550 humidifier Parts

Here are the diagrams and repair parts for Aprilaire 550 humidifier, as well as links to manuals and error code tables, if available.

Aprilaire 550 humidifier
By Schematic
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This is the number corresponding to the part on the diagram / schematic

Browse Parts for550 Humidifier

  • Transformer for Aprilaire 550 - Part 4010

    Model 550 diagram

    Transformer

    Part #4010

    The manufacturer no longer makes this part, and there's no substitute part

  • Wick Pad for Aprilaire 550 - Part 10

    Model 550 diagram

    Wick Pad

    Part #10

    The manufacturer no longer makes this part, and there's no substitute part

  • Humidistat Adapter Plate for Aprilaire 550 - Part 4039

    #NI

    All parts diagram

    Humidistat Adapter Plate

    Part #4039

    The manufacturer no longer makes this part, and there's no substitute part

  • Stainer for Aprilaire 550 - Part 4004

    Model 550 diagram

    Stainer

    Part #4004

    The manufacturer no longer makes this part, and there's no substitute part

  • Current Sensing Relay for Aprilaire 550 - Part 50

    #NI

    All parts diagram

    Current Sensing Relay

    Part #50

    The manufacturer no longer makes this part, and there's no substitute part

  • Water Tray for Aprilaire 550 - Part 4218

    Model 550 diagram

    Water Tray

    Part #4218

    The manufacturer no longer makes this part, and there's no substitute part

  • Feed Tube With Compression Sleeve for Aprilaire 550 - Part 4226

    Model 550 diagram

    Feed Tube With Compression Sleeve

    Part #4226

    The manufacturer no longer makes this part, and there's no substitute part

  • Panel for Aprilaire 550 - Part 4220

    Model 550 diagram

    Panel

    Part #4220

    The manufacturer no longer makes this part, and there's no substitute part

  • Compression Fitting And Strainer (6) for Aprilaire 550 - Part 4003

    Model 550 diagram

    Compression Fitting And Strainer (6)

    Part #4003

    The manufacturer no longer makes this part, and there's no substitute part

  • Orifice for Aprilaire 550 - Part 4231

    Model 550 diagram

    Orifice

    Part #4231

    The manufacturer no longer makes this part, and there's no substitute part

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