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  1. #1
    Join Date
    Mar 2006
    Location
    ral,nc
    Posts
    7
    replacing split system in a 1987 2 story 2000 sq. ft. house including replacing all duct work. I will be finishing room in WALK-UP ATTIC at a later date. I have heard damper system will help me out with walk up room. So far I am think this is what I think I want:

    Downstairs: 2-TON, Trane XL1400, 80 afue(standard), 13 seer, 2 stage variable speed, natural gas heat.

    Upstairs:2 ton, Trane XL16i 13 seer,2 stage cooling with multi-stage fan(because this uses r-410a,and not sure about new freon and having 2 different types freon at same house, I may switch to XL15i,), XL80 80 afue Furnace. My questions are:

    1. I would like to know if my choices are reasonable, these are pricey systems but not moving for at least 7 yrs.
    2. Is the XL16i overkill, I don't see any other unit Trane makes with variable speed?
    thanks! great forum

    forgot to mention that I live in Raleigh nc, hot summers, not too harsh winters

    >>> Edit: Moved double post to your original post. <<<



    [Edited by jrbenny on 03-10-2006 at 07:02 AM]

  2. #2
    Join Date
    Jun 2005
    Posts
    347
    the 16 is a verry good choice. if you are staying for 7 yrs or maby longer it would be a good investment

  3. #3
    Join Date
    Nov 2004
    Location
    SW FL
    Posts
    6,247

    Wink Former Cary NC residdent

    Originally posted by stevew1
    a 1987 2 story 2000 sq. ft. house
    including replacing all duct work.

    I will be finishing room in WALK-UP ATTIC at a later date. I have heard damper system will help me out with walk up room. So far I am think this is what I think I want:

    Downstairs: 2-TON, Trane XL1400, 80 afue(standard), 13 seer, 2 stage variable speed, natural gas heat.

    Upstairs:2 ton, Trane XL16i 13 seer,2 stage cooling with multi-stage fan
    (because this uses r-410a,and not sure about new freon and having 2 different types freon at same house, I may switch to XL15i,), XL80 80 afue Furnace. My questions are:

    1. I would like to know if my choices are reasonable, these are pricey systems but not moving for at least 7 yrs.

    2. Is the XL16i overkill, I don't see any other unit Trane makes with variable speed?
    What is the heating energy cost $aving$ with XL16i heat pumps? $160 per year

    3,200 H.D.D. / 2,000 Cooling Degree Days,
    heating energy consumption might be
    ~$700 for natural gas and
    ~$540 with use of heat pumps

    Guessing ~26'F as approx. balance point with
    two 2-ton heat pumps.

    I don't remember the natural ga$ and current electric pricing in NC. I would expect price difference bewteen XL14i and XL16i to be "minimal" given that you are also
    replacing all the duct work (> ~30% of the cost).

    Heat pump will be noticably (> just a few $00) higher $.
    Might be ~6 year pay-back?
    Designer Dan
    It's Not Rocket Science, But It is SCIENCE with "Some Art". ___ ___ K EEP I T S IMPLE & S INCERE

    Define the Building Envelope and Perform a Detailed Load Calc: It's ALL About Windows and Make-up Air Requirements. Know Your Equipment Capabilities

  4. #4
    Join Date
    Mar 2006
    Location
    Tampa,FL.
    Posts
    107
    Originally posted by stevew1
    replacing split system in a 1987 2 story 2000 sq. ft. house including replacing all duct work. I will be finishing room in WALK-UP ATTIC at a later date. I have heard damper system will help me out with walk up room. So far I am think this is what I think I want:

    Downstairs: 2-TON, Trane XL1400, 80 afue(standard), 13 seer, 2 stage variable speed, natural gas heat.

    Upstairs:2 ton, Trane XL16i 13 seer,2 stage cooling with multi-stage fan(because this uses r-410a,and not sure about new freon and having 2 different types freon at same house, I may switch to XL15i,), XL80 80 afue Furnace. My questions are:

    1. I would like to know if my choices are reasonable, these are pricey systems but not moving for at least 7 yrs.
    2. Is the XL16i overkill, I don't see any other unit Trane makes with variable speed?
    thanks! great forum

    I think they are great choices the R410A system you have to keep in mind,when your service tech. checks your R410A he may mistake it for R-22 and could charge it with R-22. I have seen it done with R-500 systems.

  5. #5
    Join Date
    Mar 2006
    Location
    ral,nc
    Posts
    7

    Question

    I plan on replacing ALL duct work upstairs and down, any reason I can't take metal boot down and put duct work on and the put boot back up there. I've had some quotes to just cut duct at a point about 1'-2' from boot and put a"splice. this seems like even more work, is that what hacks do?

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