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Chimney liners

Dave Yates (PAH)
Dave Yates (PAH) Member Posts: 2,162
in THE MAIN WALL
to a high efficiency direct-vent mod-con? If she applies the costs for a quality SS liner installed against the upgrade increase in pricing, her ROI becomes very attractive. In the end, she'd keep more of her money - year after year after year..............

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Comments

  • rick_6
    rick_6 Member Posts: 2
    Chimney Liner Installation

    My aunt is converting from oil to gas. She has hot water baseboard.

    Does she need to sleeve the chimney flue with a liner? She is getting two different stories.If she does, pros or cons for stainless or aluminum? If she installs a direct vent unit which is more effiecient, what exhaust pipe is appropriate? PVC or stainless?

    Thanks,

    Rick
  • Weezbo
    Weezbo Member Posts: 6,232
    even if the chimey was to be used for oil i would suggest a

    liner. as to direct vented appliances , going with the manufacturers reccommended material would be a definite place to start. especially if the boiler is one that modulates the burn and is a condensing model.
  • Bob Harper
    Bob Harper Member Posts: 1,091
    Level II inspection

    The chimney must be suitable for the class of service. The National Fire Protection Assn. recommends in their 211 std. to have a Level II inspection and that the flue/ liner must be sized to the appliance. While gas allows oversizing up to 7X, for performance, it should be relined regardless and sized to the appliance, run, and liner material.

    I strongly advise against aluminum liners. They may meet code for Category 1 gas appliances but don't hold up well. You must use 316 or better stainless for oil.

    I've never seen a masonry chimney that passed a Level II inspection without a listed liner.
    HTH
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