Janitrol
Furnace

Model #GMN100-4 Janitrol gas furnace

Here are the diagrams and repair parts for Janitrol GMN100-4 gas furnace, as well as links to manuals and error code tables, if available.


There are a couple of ways to find the part or diagram you need:

  • Click a diagram to see the parts shown on that diagram.
  • In the search box below, enter all or part of the part number or the part’s name.

Not all parts are shown on the diagrams—those parts are labeled NI, for “not illustrated”.

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For DIY troubleshooting advice and repair guides, visit our repair help section.

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    Showing 10 of 62 parts

    O-Ring

    #16

    Heat assembly/electrical Diagram

    O-ring

    Part #B28326-06
    $20.40

    In Stock

    Furnace Blower Fan Motor

    #16

    Heat exchanger Diagram

    Furnace blower fan motor

    Part #B13400-20
    $251.73

    In Stock

    Furnace Burner Roll-Out Limit Switch

    #9

    Heat assembly/electrical Diagram

    Furnace burner roll-out limit switch

    Part #B13701-44
    This item is not returnable
    $6.49

    In Stock

    Furnace Blower Door

    #8

    Heat exchanger Diagram

    Furnace blower door

    Part #25223-02S
    $18.44

    In Stock

    Switch Bracket

    #7

    Heat assembly/electrical Diagram

    Switch bracket

    Part #28095-00
    This item is not returnable
    $2.49

    In Stock

    Rtnr Bracket

    #12

    Heat exchanger Diagram

    Rtnr bracket

    Part #28702-01
    This item is not returnable
    $5.99

    In Stock

    Vnt Comb Kit

    #43

    Heat assembly/electrical Diagram

    Vnt comb kit

    Part #B18105-11
    $18.99

    In Stock

    Heat Shield

    #23

    Heat assembly/electrical Diagram

    Heat shield

    Part #28250-06
    $12.49

    In Stock

    21" Duct Ang

    #5

    Heat exchanger Diagram

    21" duct ang

    Part #25240-02
    This item is not returnable
    $3.99

    In Stock

    Cntl Acce Dr

    #9

    Heat exchanger Diagram

    Cntl acce dr

    Part #28125-02S
    $28.69

    In Stock