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Chimney Liners

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Jim Davis
Jim Davis Member Posts: 305
in THE MAIN WALL
The fact that most 80% furnaces put more heat up the chimney than an old furnaces because they do not add 50% dilution air would make one think liners shouldn't be needed. Many places they are required, someday they will be recalled and they fix nothing-just hide problems

Comments

  • Paul B_2
    Paul B_2 Member Posts: 3
    Chimney Liners

    Are chimney liners required for all 80% efficency replacement furnaces?
  • John Mills_3
    John Mills_3 Member Posts: 221
    Good idea

    If you follow the National Fuel Gas Code, any chimney with outside exposure below the roofline should have a liner. Some instances, if the installation meets certain requirements on tile-liner sizing and water heater draft hood sizing, an inside chimney could get by without one though it is wise to use one anyway.
  • MIKE6
    MIKE6 Member Posts: 102


    More info is needed,what is the location of the chimney( inside the house or out side),is there a clay liner in the chimney,how many btus,is this a hot air furnace,how many units are vented into the chimney,what fuels,what maanufacturer furnace,what is your location,State please,it makes a difference,what materials comprise your existing chimney Oh yea the short answer is yes.
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