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  1. Replies
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    so which ones are the one to get, the ones with...

    so which ones are the one to get, the ones with metal @ merv 4 or ones without the metal?
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    http://i39.tinypic.com/33xu5ci.jpg pressure @...

    http://i39.tinypic.com/33xu5ci.jpg
    pressure @ -50 pa = 1349? is that the static pressure or just the total air flow?
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    Thanks Udarrell, i get the results of some energy...

    Thanks Udarrell, i get the results of some energy audit sometime this week, hopefully it will have the static pressure any other relative information within the report.
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    anyone know if these filters are any good? about...

    anyone know if these filters are any good? about to stock up before we're slammed with heat.
    ...
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    sorry this is for an HVAC specifically a tam7 air...

    sorry this is for an HVAC specifically a tam7 air handler 3.5 tons.
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    where to buy 22x20 filter online?

    Anyone know where i can buy a 22x20 filter online? I can't find these instores and want to try and load up but i'm scared of getting a coffee filter type..

    google leads me to this website...
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    there is one spot where the return air actually...

    there is one spot where the return air actually comes in, i think it's a 30x20 but unsure how much it would stick out?

    also is the TCONT803 themostat accurate? I find it varying alot especially...
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    Best filters to use for a Tam 7 Air handler?

    Contractor who installed gave us a reusable/washable 20x22x1 filter. Our family does not have any allergies.

    Anyone know what the best types of filters to use for a tam7 air handler? Merv/pleated...
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    Sorry i misunderstood the lineset question. ...

    Sorry i misunderstood the lineset question.

    I'm thinking it's approximately 60 ft. 10ft/each floor + 15-20 ft to the closet +10-20 ft miscellaneous. so approximately 50-60ft?

    i do not know off...
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    What size do you have now? - Trane XE1000 4 ton...

    What size do you have now?
    - Trane XE1000 4 ton system

    What size is recommended for the 4 ton Carrier Performance 16 and for the 3 1/2 ton XL15i?

    - His heatload was calling for about 40.3k...
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    How do you stage the heat strip? is it just a...

    How do you stage the heat strip? is it just a modification on the thermostat or is it a different part altogether?

    1. Any ductwork modifications required going to the larger two stg Carrier...
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    Trane XL15i or Carrier Performance 16?

    So my dilema is a single stage 3.5 ton Trane XL15i heat pump or going with a 4.0 ton Carrier Performance 16 2-stage heat pump. the cost is $ more for the XL15i. with that being said what would the...
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    anyone know which model number for the IAQ would...

    anyone know which model number for the IAQ would work well with the xl15i and tam7?

    i see three models for the IAQ.

    YTH9421C1010
    YTH9421C1002
    TH9421C1004
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    Thanks Tiger! I was just curious as to why...

    Thanks Tiger!

    I was just curious as to why trees and shade were not counted since i believe that would help the heatload. I've been reading threads on this forum and am trying not to oversize as...
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    heat load - worst case scenario?

    is the heat load not supposed to take into account shading and trees? or did my contractor not want to factor that portion in?
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    The contractors i was speaking about is not the...

    The contractors i was speaking about is not the current one. The current contractor said he could do whatever we wanted but agreed that a return downstairs would be the most appropriate. He's going...
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    how hard is it to get a return downstairs? one...

    how hard is it to get a return downstairs? one contractor prior said to just install the returns in the adjacent rooms to where the air handler cabinet was. 2 12x12 returns one on each side. Is this...
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    most likely because it's downstairs and they were...

    most likely because it's downstairs and they were too lazy to put something down there when they designed/built the house. not sure how we would get something down there as the common walls are...
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    yes only one return on the 2nd story next to the...

    yes only one return on the 2nd story next to the air handler
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    Can anyone also let me know if the return is...

    Can anyone also let me know if the return is adequate? 31"x20"
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    I think that dining room is the one with a...

    I think that dining room is the one with a standard sliding glass door that gets a couple hours of sunlight in the morning. i will have to check with the contractor on that one. Does it make sense?...
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    is the 2-stage AS Heritage 16 the same as the...

    is the 2-stage AS Heritage 16 the same as the XL16i where it can not dehumidify on demand?

    so due to the hot long summers, EER is the most important factor to look for instead of SEER?

    If I...
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    Unfortunately in my search, i was not able to...

    Unfortunately in my search, i was not able to find a Nordyne installer or any of the rebranded manufacturers in this area.

    I do want to go with this contractor as he is one of the only ones i...
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    Thanks baldloonie and Tigerdunes. Unfortunately...

    Thanks baldloonie and Tigerdunes. Unfortunately the only system in 2 stage equipment for the 4ton load that Trane/AS qualifies for a tax credit would be the xl20i with the tam7 air handler so its...
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    Please help me choose a Heat Pump

    Heat loads are in the following links.

    Current House Heat Load

    Upgraded to R49 heat load


    Austin, TX
    All electric home, 2 stories approximately 2400 sq ft.
    Design Specs
  26. Heat loads are in the following links. Current...

    Heat loads are in the following links.

    Current House Heat Load

    Upgraded to R49 heat load

    The tightness of the house was designed "average"

    Does this load look like a 4 ton?
  27. as for the wiring, any drawbacks to having the...

    as for the wiring, any drawbacks to having the thermostat upstairs? I think the current one was downstairs and the contractor made it seem like it would be difficult to wire the communicating 8-wire?...
  28. with R49 and a radiant barrier added, the cooling...

    with R49 and a radiant barrier added, the cooling only got down to upper 38k btu load on the cooling side. The contractor didn't seem to care for air infiltration when asked about weatherization,...
  29. Thank you everyone for your responses. so a 4...

    Thank you everyone for your responses.

    so a 4 ton - 2 speed would infinity or an 25vna would only need 3 wires at the thermostat?

    Also since the heat loads were about the same with attic...
  30. replacing an old 4 ton trane xe1000 heat pump and...

    replacing an old 4 ton trane xe1000 heat pump and air handler. Not too sure what the current heat strip size is.

    I was going to wait until he gave me the actual heat loads, but i'm still waiting...
  31. Load Calculation - Heat pump cooling or heating more important?

    background information:

    Austin, TX
    All electric home, 2 stories approximately 2400 sq ft.
    Design Specs
    Cooling 99 outside, 76 inside
    Heating 28 outside, 70 inside
    R30 in the attic
    Home Built...
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    ok, i guess the boss looked at the manual J and...

    ok, i guess the boss looked at the manual J and said the same thing. I think it maybe time to get another contractor to get a 2nd opinion. Also stated that the ACCA was looking to revamp austin...
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    me and contractor are going back and forth with...

    me and contractor are going back and forth with the load, he's insisting on the 4 ton, i'm insisting he try to get us to a 3 ton. After about an hour long conversation of him trying to convince me...
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    Thanks everyone for all the help. any...

    Thanks everyone for all the help.

    any suggestions on what to improve to get us to the 3 ton? we currently have R30 in the attic of blown fiberblass, would R38 or higher get us there? they do...
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    can someone please provide the formula you all...

    can someone please provide the formula you all are using to determine the tonnage? or a link to where i can find the formulas? I'm thinking the sensible plays some part just not sure how. When...
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    since its austin, i'm assuming summer outdoor...

    since its austin, i'm assuming

    summer outdoor 98 indoor 75
    winter outdoor 28 indoor 70
  37. Replies
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    so a 3 ton system is the most appropriate than?

    so a 3 ton system is the most appropriate than?
  38. Replies
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    Live in Austin, TX. It's dry in austin...

    Live in Austin, TX.

    It's dry in austin compared to the rest of texas, but still a little humid. Replacing the unit since the old unit has a coil leak and is 14 years old. wanting a working air...
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    Load Calculation interpretation

    Can anyone tell me how to look at this load calculation summary. Just want to make sure contractor is correct with his 3.91 ton estimate.

    Thanks!
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    so in climates where winter averages are in the...

    so in climates where winter averages are in the 40s demand defrost isn't that essential? what i'm taking from everyone is timed defrost is inefficient and a hassle but not a nuissance as it won't...
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    When I need to. So would systems like the byrant...

    When I need to. So would systems like the byrant evolution 16 not be worth considering?
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    demand on defrost - worth it?

    so i'm looking to replace an old heat pump.

    Is the demand on defrost something that I need to get? or is the timed defrost adequate?
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    anyone have any real world estimates how much the...

    anyone have any real world estimates how much the solar screens helped?

    the statement:
    Upgrade seer and to dual capacity heating and cooling after #1.

    is this the same as upgrade your new...
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    I think the more i read you pros talk, the more...

    I think the more i read you pros talk, the more i'm getting confused... so what is a consumer supposed to look for if these EER and SEER #'s don't really mean a thing?
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    i was in agreement and wanting to get stuff done...

    i was in agreement and wanting to get stuff done to seal the house, i just didn't know what was affordable to me. Like new windows and stuff would be out of my range right now.

    Email is being...
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    what's a manual S? I know what you're trying to...

    what's a manual S? I know what you're trying to preach and that is to make improvements on the house prior to new hvac. With all that said, from the energy audit i've provided you what would need to...
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    Skyheating I went on the AHRI website and looked...

    Skyheating I went on the AHRI website and looked at the air handler you proposed, i think for the 4ton system their is only 1 XL20i that qualifies for the federal tax credit.

    Tekkid, the audit...
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    XL20i vs XL15i

    another contractor came by trying to sell bryant equipment and i really don't care what equipment i get installed, but the prices were the same or more for bryant and a little less for Amana. I...
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    XL20i vs XL19i vs XL15i and Hyperion air handler....

    XL20i vs XL19i vs XL15i and Hyperion air handler.

    So i had a 2 fold question. Will the Hyperion Tam7 communicate with the XL20i and XL19i? I'm thinking only the TAM8 will communicate with it, so...
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    so what major fix got you there? To me it seems...

    so what major fix got you there? To me it seems like attic insulation and duct insulation are the easiest. We will be doing the duct sealing if we go with the contractor i just mentioned. he said it...
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