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  1. #1
    Join Date
    Feb 2002
    Location
    the 'burbs of Chicago
    Posts
    16
    I trust the opinions/feed back from here... I have a (can't recall exact btu furnace now, but small, maybe 40k) nat'l gas furnace and 40-gal gas water tank vented in an unlined, brick chimney, original from the 50's. New furnace is still only the ~80% eff., but has the inducer fan/draft, and after installation contract, now I'm told I will have condensation issues with cold, unlined chimney - need to have it lined with flex liner (appx 20-25' total).
    SS are hurting $$$$$$, aluminum ones much, MUCH more rea$onable, and come with a decent 20-25 yr warranty. Supposedly. Would you allow/do an aluminum? Never consider it? I'm trying t do some research before I sign, and it appears one could buy the alum 'kit' for about $100-120... now, installing it, that's another animal! Can I get a rough est if this was the only work to be done, meaning, if I was not to call back the furnace installer, would another HVAC guy be intersted in this, of is it not a big enough job, or wouold they just make the price up to make it worth their while since they didn't get the furance install too?
    Thanks.

  2. #2
    Join Date
    Oct 2005
    Posts
    68
    Any good company will help you.

  3. #3
    Join Date
    Mar 2005
    Location
    burlington county n.j.
    Posts
    9,763
    have not had any problems with aluminum liners. if heating guys don't want to do job call chimney cleaning co.

  4. #4
    Join Date
    Apr 2004
    Posts
    7,680
    Its a shame the original installer didnt do it in the first place, but, I suspect looking for a bargain is why you're in the fix youre in. no offense intended.

    Call any reputable HVAC company to have it done as wayner211 mentioned.

  5. #5
    Join Date
    Feb 2003
    Posts
    1,996
    Many heating guys don't touch chimney, dont want the liability. A sweep will want to make money on the material also. Call around and get the best price.

  6. #6
    Join Date
    Feb 2004
    Posts
    2,597
    why would they bring that up after the fact? it should have been included in the installation.

    looks like the salesman didn't look around too well. i wonder what else he missed?

  7. #7
    Join Date
    Jun 2003
    Location
    New Hampshire
    Posts
    2,666
    Aluminum is for gas appliances. Stainless steel liner is required for oil appliances.
    It takes 2 people to install it.

  8. #8
    Join Date
    Jun 2000
    Location
    WYO
    Posts
    2,019
    Make sure the chimney liner is approved for use in a masonry chimney, for gas appliances. Just an aluminum flexible pipe wont cut it. I agree it should have been done when the furnace was installed.
    never say never

  9. #9
    Join Date
    Aug 2004
    Location
    S.E. Pa
    Posts
    6,292

    choices

    Yes, listed aluminum liners are approved for Category I gas appliances--no oil. However, they are a poor bargain. If you live in the deep South, it might hold up. However, up North, they might last 2-3 yrs. The problem is, most HVAC companys don't inspect their work every yr. once they're done. Sweeps do. That's why 90% of the sweeps only sell stainless steel. It's like throwing money away.

    Pay a sweep to install a listed liner such as 316Ti or AL29-4C alloy.

    Yes, you must reline the chimney both for code compliance and functionality.

  10. #10
    Join Date
    Jun 2003
    Location
    New Hampshire
    Posts
    2,666

    Re: choices

    Originally posted by hearthman
    Yes, listed aluminum liners are approved for Category I gas appliances--no oil. However, they are a poor bargain. If you live in the deep South, it might hold up. However, up North, they might last 2-3 yrs. The problem is, most HVAC companys don't inspect their work every yr. once they're done. Sweeps do. That's why 90% of the sweeps only sell stainless steel. It's like throwing money away.

    Pay a sweep to install a listed liner such as 316Ti or AL29-4C alloy.

    Yes, you must reline the chimney both for code compliance and functionality.
    You are probably right about the aluminum. I have always used Z-FLEX kit, which is stainless steel on certain types of propane decorative appliances. We usually have the homeowner hire a chimney guy to install a stainless steel liner for oil fired equipment that we install, before we will install it. So I wouldn't know how well aluminum holds up. But it seems to hold up pretty well in B vent.

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