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Thread: lennox g14

  1. #1
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    Feb 2012
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    lennox g14

    what size is this unit ?--G14Q5-80-8
    big furnace.would think 125-150k btu?
    dont want to remove door to find out actual btu.

  2. #2
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    80k, tell them to get a co detector.

  3. #3
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    Columbus OH
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    Why whould you want to take off the door?

  4. #4
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    “I am so clever that sometimes I don't understand a single word of what I am saying.”
    ― Oscar Wilde, The Happy Prince and Other Stories

  5. #5
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    Feb 2012
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    the door off to get the model #
    this is from a service ticket--i'm at my mothers house in ohio .including basement the house is about 4000 sq ft.the furnace is phisically large.there must be a # missing I cant believe it is an 80k btu furnace..the inside is now 74---exterior---20 .not sure 80k btu would do this!

  6. #6
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    It's 95% eff, it's a pulse also, so it's in your moms house?

  7. #7
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    Quote Originally Posted by pressures View Post
    there must be a # missing I cant believe it is an 80k btu furnace..the inside is now 74---exterior---20 .not sure 80k btu would do this!
    Joehvac25 is correct - 80,000 btuh (right from the manual).

    G14Q5-80-8

    G14 - Gas Furnace Series 14

    Q - Direct Drive Blower

    5 - Air movement capabilities in tons

    80 - Btuh in thousands

    8 - dash number

    The number missing is the electrical characteristics "letter" at the end of the model number.
    Instead of learning the tricks of the trade, learn the trade.

  8. #8
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    Quote Originally Posted by rundawg View Post
    Joehvac25 is correct - 80,000 btuh (right from the manual).

    G14Q5-80-8

    G14 - Gas Furnace Series 14

    Q - Direct Drive Blower

    5 - Air movement capabilities in tons

    80 - Btuh in thousands

    8 - dash number

    The number missing is the electrical characteristics "letter" at the end of the model number.
    What did I win lol.

    If your having trouble getting the door off try this method, grab hand inset on door, lift straight up, then pull bottom of door out toward you, then down slightly. Reverse order to reinstall!

  9. #9
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    Quote Originally Posted by Joehvac25 View Post
    What did I win lol.
    The rest of the day off. Oh yeah, take the phone off the hook too.
    Instead of learning the tricks of the trade, learn the trade.

  10. #10
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    Upper Michigan
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    Here's my Job today!

    Name:  ImageUploadedByTapatalk1356898485.224381.jpg
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  11. #11
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    Moore, Oklahoma, United States
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    Quote Originally Posted by pressures View Post
    the door off to get the model #
    this is from a service ticket--i'm at my mothers house in ohio .including basement the house is about 4000 sq ft.the furnace is phisically large.there must be a # missing I cant believe it is an 80k btu furnace..the inside is now 74---exterior---20 .not sure 80k btu would do this!
    If the house has decent insulation an 80k furnace would have no problem doing a 55 split. Most people don't realize how powerful gas furnaces actually are, finding an undersized one in a house with decent insulation is like finding a unicorn. How much on time does the 80k have vs off time?

  12. #12
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    Jun 2006
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    SW MO.
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    Quote Originally Posted by rundawg View Post
    Joehvac25 is correct - 80,000 btuh (right from the manual).

    G14Q5-80-8

    G14 - Gas Furnace Series 14

    Q - Direct Drive Blower

    5 - Air movement capabilities in tons

    80 - Btuh in thousands

    8 - dash number

    The number missing is the electrical characteristics "letter" at the end of the model number.
    Letter at end designating voltage is on commercial units

  13. #13
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    Quote Originally Posted by chaard View Post
    Letter at end designating voltage is on commercial units
    I honestly can't confirm or deny what you are saying isn't true on the newer Lennox units, but the older residential units had it.

    This 1994 model AC (see attachment) had it, so I would wager his early 1990's G14 unit did too.

    I have an older model number nomenclature pdf (dated 2004) that shows all the electrical codes for Lennox's residential model numbers.
    Attached Images Attached Images  
    Instead of learning the tricks of the trade, learn the trade.

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