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  1. Replies
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    Guys, Thanks for all the input. I opted for...

    Guys,

    Thanks for all the input. I opted for the XT80 Trane furnace with matching 3ton coil and the lowest heat BTU rating I could get.
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    All of the HVAC estimates were based on finger in...

    All of the HVAC estimates were based on finger in the air as none would run the calc unless I committed to them before I got the final bid. For my 2nd floor 1600SF in hot Atlanta there is no way that...
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    wyounger, Thanks for the response. I could not...

    wyounger,

    Thanks for the response. I could not get any of the several bidders to perform a load calc unless I committed to them before I got the estimate; (typical comment was replace what you...
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    Guys, Thanks so much for all the input. I...

    Guys,

    Thanks so much for all the input. I think coordinatsales had it pretty much nailed about blowers vs heat BTU's. The furnace equip specs (Trane in my case) limits the blower-heat btu choices...
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    Robo, That seems like an awfully deceptive way...

    Robo,

    That seems like an awfully deceptive way to do business but thanks for the heads up, I will check/look for the "B"-17.5" model number on the coil that Mark Beiser gave me before it is...
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    Yup, the variable speed is the way to go but am...

    Yup, the variable speed is the way to go but am not staying in this house much longer. I think the XT80 is two stage but not a VS.
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    Again Mark Many Thanks! The XR80 "B" furnace...

    Again Mark Many Thanks!

    The XR80 "B" furnace is the exact one that I have decided on. I shot down the XB version as the installer agreed that the XB80 noise would be very noticable when placing...
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    thanks Mark, The XR80 "B" series sound like...

    thanks Mark,

    The XR80 "B" series sound like the way to go. My concern is more about cooling-CFM-blower motor performance, that's why I thought the 47K BTU furnace output would be ok for the 1600SF...
  9. Replies
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    thanks Mark, Had two quotes one with ADP coil...

    thanks Mark,

    Had two quotes one with ADP coil and one with Trane coil. The TXV is important for me even though I will eventually only be installing the Trane XR13 3 ton condensor. Another...
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    Thanks Mark, The system is an upflow setup...

    Thanks Mark,

    The system is an upflow setup with the second (downstairs) unit being horizontal with slab coil. Any thoughts on ADP coils vs Trane coils?
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    Anyone have comments on the coil-cooling...

    Anyone have comments on the coil-cooling efficiency difference between a 14-5" vs 17.5" furnace-coil width? Reason is the existing furnace-coil is the smaller 14.5" cabinet. There are no clearance...
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    Co-ordinatesales, thanks for responding; "You...

    Co-ordinatesales, thanks for responding;

    "You are probably in the situation we are here in OK. We have to size the furnace for the blower to match the a/c rather than the heat to match the load....
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    if 12,000 BTU = 1 ton why would I need 80,000 BTU...

    if 12,000 BTU = 1 ton why would I need 80,000 BTU for the 3 ton system I am about to have installed? This will be going in upstairs, 1,600SF. Original upstairs system is 18 yrs old, 2.5 ton - 75,000...
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    thanks Baldloonie, I have some long duct runs and...

    thanks Baldloonie, I have some long duct runs and relatively low air flow. Was wanting solid CFM-air flow but don't want to compromise humidity.
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    Have had several bids for new Rheem system in the...

    Have had several bids for new Rheem system in the Atlanta area and am getting conflicting comments about either there is a shortage of TVX-not available or that all Rheem coils now come with TVX on...
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    Not ideal temps but supply in cooler AM is 64,...

    Not ideal temps but supply in cooler AM is 64, return is 74. In hotter afternoon, supply is 68 and return is 78. 18 year old split system with attic furnace, ducts are round metal fully insulated....
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    thanks comfortdoc. Ahh yes, my dream would be a...

    thanks comfortdoc. Ahh yes, my dream would be a VS but not planning in staying in this house that long. Will call my on-line HVAC sales source for that coil.
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    Sorry Comfortdoc, Ruud furnace. AH is an old Fla...

    Sorry Comfortdoc, Ruud furnace. AH is an old Fla phrase. I have pics of the setup but don't know how to paste to the email message or do I send it to the wall of shame?
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    Furnacedude, thought it might be more like only...

    Furnacedude, thought it might be more like only 18" rims on a small car. Seriously though, bet you can't tell me about large horizontal slab 24" coils rated at 2.5-3 tons can you? Try a beast of an...
  20. Replies
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    Sorry Comfortdoc, didn't see your question. Local...

    Sorry Comfortdoc, didn't see your question. Local contractor has charged the system twice and reported leak in coil along with pointing out a good amount of rust in the lower coil/case. The coil is...
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    Comfortdoc: Rheem Condensor RAKB-030ZAZ ...

    Comfortdoc: Rheem Condensor RAKB-030ZAZ
    Ruud Furnace UGUF-075A-ER 7amp 1/4HP
  22. Replies
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    My gas furnace is a horizontal unit and is quite...

    My gas furnace is a horizontal unit and is quite large with dimensions of 25x14x62. I replaced the old condensor last year with a 10 Seer/2.5 ton condensor but am now kicking myself for not replacing...
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    Thanks Baldloonie, you are the man on this forum....

    Thanks Baldloonie, you are the man on this forum. I thought getting the higher rated 2000CFM fan blower and then stepping it down/setting it lower to 1200CFM might help the efficiency.

    Also, you...
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    I live in the Atlanta area with high...

    I live in the Atlanta area with high heat-humidity. The local HVAC contractor suggests that I should have a larger 3.5-4ton evap coil than the 3ton 13 Seer condensor to get the efficiency. If TXV is...
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    Baldloonie thanks for responding, as you are the...

    Baldloonie thanks for responding, as you are the man on this forum. I live in the Atlanta area with high heat-humidity. Some of the local contractors suggest that I should have a larger (tonnage)...
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