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Gas, Electric & Oil Furnaces

High-efficiency gas, electric, and oil furnaces across BTU inputs and AFUE ratings for residential heating.

727 Products

  • ARMSTRONG AIR 26U02 110,000 BTU 80% AFUE Gas Furnace, Downflow, 120V/1-Phase/60Hz
    ARMSTRONG AIR

    ARMSTRONG AIR 26U02 110,000 BTU 80% AFUE Gas Furnace, Downflow, 120V/1-Phase/60Hz

    In stock
    (0)
    $2653.68
  • ARMSTRONG AIR 26S66 70,000 BTU 80% AFUE Gas Furnace, Downflow, 120V/1-Phase/60Hz
    ARMSTRONG AIR

    ARMSTRONG AIR 26S66 70,000 BTU 80% AFUE Gas Furnace, Downflow, 120V/1-Phase/60Hz

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    (0)
    $2273.47
  • ARMSTRONG AIR 26U29 45,000 BTU 96% AFUE Gas Furnace, Upflow / Horizontal, 120V/1-Phase/60Hz
    ARMSTRONG AIR

    ARMSTRONG AIR 26U29 45,000 BTU 96% AFUE Gas Furnace, Upflow / Horizontal, 120V/1-Phase/60Hz

    In stock
    (0)
    $4960.31
  • ARMSTRONG AIR 26U27 110,000 BTU 96% AFUE Gas Furnace, Downflow, 120V/1-Phase/60Hz
    ARMSTRONG AIR

    ARMSTRONG AIR 26U27 110,000 BTU 96% AFUE Gas Furnace, Downflow, 120V/1-Phase/60Hz

    In stock
    (0)
    $7175.28
  • ARMSTRONG AIR 26U26 90,000 BTU 96% AFUE Gas Furnace, Downflow, 120V/1-Phase/60Hz
    ARMSTRONG AIR

    ARMSTRONG AIR 26U26 90,000 BTU 96% AFUE Gas Furnace, Downflow, 120V/1-Phase/60Hz

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    (0)
    $6418.76
  • ARMSTRONG AIR 26U22 110,000 BTU 93% AFUE Gas Furnace, Upflow / Horizontal, 120V/1-Phase/60Hz
    ARMSTRONG AIR

    ARMSTRONG AIR 26U22 110,000 BTU 93% AFUE Gas Furnace, Upflow / Horizontal, 120V/1-Phase/60Hz

    In stock
    (0)
    $2992.95
  • ARMSTRONG AIR 26U28 30,000 BTU 96% AFUE Gas Furnace, Upflow / Horizontal, 120V/1-Phase/60Hz
    ARMSTRONG AIR

    ARMSTRONG AIR 26U28 30,000 BTU 96% AFUE Gas Furnace, Upflow / Horizontal, 120V/1-Phase/60Hz

    In stock
    (0)
    $4960.31
  • ARMSTRONG AIR 26U24 45,000 BTU 96% AFUE Gas Furnace, Downflow, 120V/1-Phase/60Hz
    ARMSTRONG AIR

    ARMSTRONG AIR 26U24 45,000 BTU 96% AFUE Gas Furnace, Downflow, 120V/1-Phase/60Hz

    In stock
    (0)
    $5519.89
  • ARMSTRONG AIR 26U05 70,000 BTU 80% AFUE Gas Furnace, Upflow / Horizontal, 120V/1-Phase/60Hz
    ARMSTRONG AIR

    ARMSTRONG AIR 26U05 70,000 BTU 80% AFUE Gas Furnace, Upflow / Horizontal, 120V/1-Phase/60Hz

    In stock
    (0)
    $1799.67
  • ARMSTRONG AIR 26U09 135,000 BTU 80% AFUE Gas Furnace, Upflow / Horizontal, 120V/1-Phase/60Hz
    ARMSTRONG AIR

    ARMSTRONG AIR 26U09 135,000 BTU 80% AFUE Gas Furnace, Upflow / Horizontal, 120V/1-Phase/60Hz

    In stock
    (0)
    $2367.06
  • ARMSTRONG AIR 26U07 90,000 BTU 80% AFUE Gas Furnace, Upflow / Horizontal, 120V/1-Phase/60Hz
    ARMSTRONG AIR

    ARMSTRONG AIR 26U07 90,000 BTU 80% AFUE Gas Furnace, Upflow / Horizontal, 120V/1-Phase/60Hz

    In stock
    (0)
    $2006.34
  • ARMSTRONG AIR 26U21 88,000 BTU 93% AFUE Gas Furnace, Upflow / Horizontal, 120V/1-Phase/60Hz
    ARMSTRONG AIR

    ARMSTRONG AIR 26U21 88,000 BTU 93% AFUE Gas Furnace, Upflow / Horizontal, 120V/1-Phase/60Hz

    In stock
    (0)
    $2797.97
  • ARMSTRONG AIR 26U04 45,000 BTU 80% AFUE Gas Furnace, Upflow / Horizontal, 120V/1-Phase/60Hz
    ARMSTRONG AIR

    ARMSTRONG AIR 26U04 45,000 BTU 80% AFUE Gas Furnace, Upflow / Horizontal, 120V/1-Phase/60Hz

    In stock
    (0)
    $1747.02
  • ARMSTRONG AIR 26U03 75,000 BTU 80% AFUE Gas Furnace, Upflow / Horizontal, 120V/1-Phase/60Hz
    ARMSTRONG AIR

    ARMSTRONG AIR 26U03 75,000 BTU 80% AFUE Gas Furnace, Upflow / Horizontal, 120V/1-Phase/60Hz

    In stock
    (0)
    $1799.67
  • ARMSTRONG AIR 26U17 30,000 BTU 93% AFUE Gas Furnace, Upflow / Horizontal, 120V/1-Phase/60Hz
    ARMSTRONG AIR

    ARMSTRONG AIR 26U17 30,000 BTU 93% AFUE Gas Furnace, Upflow / Horizontal, 120V/1-Phase/60Hz

    In stock
    (0)
    $2394.36
  • ARMSTRONG AIR 26U15 66,000 BTU 93% AFUE Gas Furnace, Downflow, 120V/1-Phase/60Hz
    ARMSTRONG AIR

    ARMSTRONG AIR 26U15 66,000 BTU 93% AFUE Gas Furnace, Downflow, 120V/1-Phase/60Hz

    In stock
    (0)
    $2682.94
  • ARMSTRONG AIR 26U18 44,000 BTU 93% AFUE Gas Furnace, Upflow / Horizontal, 120V/1-Phase/60Hz
    ARMSTRONG AIR

    ARMSTRONG AIR 26U18 44,000 BTU 93% AFUE Gas Furnace, Upflow / Horizontal, 120V/1-Phase/60Hz

    In stock
    (0)
    $2394.36
  • ARMSTRONG AIR 26U23 110,000 BTU 93% AFUE Gas Furnace, Upflow / Horizontal, 120V/1-Phase/60Hz
    ARMSTRONG AIR

    ARMSTRONG AIR 26U23 110,000 BTU 93% AFUE Gas Furnace, Upflow / Horizontal, 120V/1-Phase/60Hz

    In stock
    (0)
    $3065.09
  • ARMSTRONG AIR 26U19 66,000 BTU 93% AFUE Gas Furnace, Upflow / Horizontal, 120V/1-Phase/60Hz
    ARMSTRONG AIR

    ARMSTRONG AIR 26U19 66,000 BTU 93% AFUE Gas Furnace, Upflow / Horizontal, 120V/1-Phase/60Hz

    In stock
    (0)
    $2486.00
  • ARMSTRONG AIR 26U20 88,000 BTU 93% AFUE Gas Furnace, Upflow / Horizontal, 120V/1-Phase/60Hz
    ARMSTRONG AIR

    ARMSTRONG AIR 26U20 88,000 BTU 93% AFUE Gas Furnace, Upflow / Horizontal, 120V/1-Phase/60Hz

    In stock
    (0)
    $2729.73
  • ARMSTRONG AIR 26U14 44,000 BTU 93% AFUE Gas Furnace, Downflow, 120V/1-Phase/60Hz
    ARMSTRONG AIR

    ARMSTRONG AIR 26U14 44,000 BTU 93% AFUE Gas Furnace, Downflow, 120V/1-Phase/60Hz

    In stock
    (0)
    $2612.74
  • ARMSTRONG AIR 26T52 45,000 BTU 80% AFUE Gas Furnace, Downflow, 120V/1-Phase/60Hz
    ARMSTRONG AIR

    ARMSTRONG AIR 26T52 45,000 BTU 80% AFUE Gas Furnace, Downflow, 120V/1-Phase/60Hz

    In stock
    (0)
    $2213.03
  • ARMSTRONG AIR 26U01 90,000 BTU 80% AFUE Gas Furnace, Downflow, 120V/1-Phase/60Hz
    ARMSTRONG AIR

    ARMSTRONG AIR 26U01 90,000 BTU 80% AFUE Gas Furnace, Downflow, 120V/1-Phase/60Hz

    In stock
    (0)
    $2486.00
  • ARMSTRONG AIR 26U16 88,000 BTU 93% AFUE Gas Furnace, Downflow, 120V/1-Phase/60Hz
    ARMSTRONG AIR

    ARMSTRONG AIR 26U16 88,000 BTU 93% AFUE Gas Furnace, Downflow, 120V/1-Phase/60Hz

    In stock
    (0)
    $2942.26