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    Thanks for the info! We'll give it a try.

    Thanks for the info! We'll give it a try.
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    Help! How set VisionPro IAQ changeover?

    Okay, how do I select the temp for changeover from heat pump to gas furnace with the IAQ stat? It seems to be set at for 35 outside temp...how do I change it to, say, 30? (Single speed condensor...
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    Craig, I forgot to add the second part of my...

    Craig, I forgot to add the second part of my question. Do you mean you leave the fan on continuous low-speed circulate? I have a Honeywell IAQ thermostat.
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    Hooray! That's pretty encouraging...thanks...

    Hooray! That's pretty encouraging...thanks Craig. I'm not where I can look at the unit right now; is the Aprilaire fan control that you mention part of the 600 kit or is it something that has to be...
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    So Baldie, you'd say it's worth having it? ...

    So Baldie, you'd say it's worth having it? You're certainly right...humidity isn't a concern in milder weather, and we do have a good number of days/nights each year when the gas heat will be...
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    Humidifier frustrations...Aprilaire 600

    Will the 600 humidify effectively if mounted on the supply side of a heat pump system? (actually dual-fuel...80% 2-stage VS furnace, 16 seer 3-ton condensor)

    Aprilaire guy says no...not without...
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    Resurrecting this thread...my dealer says it's...

    Resurrecting this thread...my dealer says it's okay to install an Aprilaire 600 humidifier on the return side (not enough room on the supply) of my heat pump system (dual fuel -- VS 80% furnace...
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    Resurrecting this thread...my dealer says it's...

    Resurrecting this thread...my dealer says it's okay to install an Aprilaire 600 humidifier on the return side (not enough room on the supply) of my heat pump system (dual fuel -- VS 80% furnace...
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    Thanks Mayguy. We have a semi-sun room that was...

    Thanks Mayguy. We have a semi-sun room that was added on, and temps in that room sometimes lag the rest of the house. Was thinking a remote sensor there might come in handy...but I'm not sure you...
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    okay w/ R22?

    Well, check out these three systems in the ARI ratings at http://www.aridirectory.org/ari/hp.php. Just plug in the reference number.

    1031663
    1031645
    1347177

    All three are 3 ton 14 seer...
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    IAQ stat sensors - different??

    Honeywell offers optional outdoor and indoor remote sensors to go w/ the IAQ. My guy locally only has the outdoor ones on hand. Wouldn't they function the same way basically and sense temperature? ...
  12. dehumidification...

    BL, are these sensible ratios for A/S-Trane or another brand? Do you happen to have them for Amana ASZ14 vs ASZ16? ( paired w/ 70K GMV 80% VS furnace)
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    sensible?

    Is this a case where a 13 seer system beats a 14?
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    yes but....!

    Thanks Mark, that helps a lot. But putting that in practical terms, if cost/installer/looks/warranty/reliability etc were all identical (I know that's never the case!) wouldn't the Nordyne be the...
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    ARI data...I don't get it...

    Okay, check out these two ARI ratings:

    1 - ARI ref# 924851 - 13.00 EER, 15.00 SEER, 9.0 HSPF, High htg 35K
    2 - ARI ref# 1093286 - 13.00 EER, 15.00 SEER, 9.15 HSPF, High htg 38K

    Both are 3 ton...
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    Sorry, just to clarify, in the post above I'm...

    Sorry, just to clarify, in the post above I'm talking about a single stage heat pump w/ a VS 2-stage furnace.
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    is this really true?

    That seems logical, but what if the stat has an outdoor sensor? Don't you only get those w/ something like the IAQ or really high end stuff? This from another post:

    Q: "Do any manufacturers of...
  18. So BL do you think the actual figure is higher? ...

    So BL do you think the actual figure is higher? For the Amana units I've looked at charts show 21,000 at 17 degrees.
  19. The ARI ref# for 3 ton is 1093286. Good specs...

    The ARI ref# for 3 ton is 1093286.

    Good specs overall...but that heat pump sure doesn't "pump" much in low outside temps...only 10,000btu at 17 degrees?? (isn't that what that figure means?)
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    Do any other brands do that?

    Do any other brands do that?
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    Wow...heck of a deal!

    Wow...heck of a deal!
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    Nordyne warranty transferable??

    Is this true?? (the part about it being transferable, I mean...) :confused:
  23. Are the ARI numbers for this configuration...

    Are the ARI numbers for this configuration published somewhere?
  24. hi-eff Nordyne setup

    Here's the whole story:

    http://hvac-talk.com/vbb/showthread.php?t=138830
  25. ?? :confused: I don't think that's right.

    ?? :confused:

    I don't think that's right.
  26. Wow...lots of good stuff there BL...thank you for...

    Wow...lots of good stuff there BL...thank you for taking the time to spell it out. I know I don't know exactly what ALL of the numbers mean, but hope others see it and benefit as well.



    That...
  27. 2-stage 16 seer vs 14 seer...worth it? Baldloonie messin' w/ me...

    We're in the KC area, replacing a 23-yr old split system furnace/AC. House is well-insulated, thorough load calc done. Almost ready to sign on the dotted line for 16 seer 2-stage heat pump as part...
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    No joke. Absolutely unbelievable. How about an...

    No joke. Absolutely unbelievable. How about an offense that led the league at nearly 40 points a game backed by a defense that gave up nearly that much? Ridiculous. Playoffs? Embarrassing.
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    No doubt you're better off with just the heat...

    No doubt you're better off with just the heat pump...would take you awhile to recover the cost of pulling a gas line. Might never recover it w/ that unit.

    We have gas to the unit but I'm still...
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    Good(man) enough!

    Okay Robo, that's good enough for me! And sound really isn't that much of an issue, esp since we won't dip into the furnace all that often w/ a dual fuel setup in this area.

    Many thanks to you...
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    3T or 4T?

    Actually that was my guess too. I found the ratings and will do some comparison browsing to see if that principle seems to hold up...seems like it ought to be true in just about any furnace vs....
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    MBE vs GMV airhandling?

    Hmmm...isn't the airhandling aspect of the GMV80 the same as that of the MBE2000? Ie, put the ASZ16 w/ that furnace, and shouldn't one get the same ARI numbers as you showed w/ the MBE2000?

    Hey...
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    what if Goodman?

    [[I still got my spreadsheet that I downloaded from aridirectory.com. An ASZ160481A* paired with coil CA*F4860*6A*+TXV and furnace A*V80905C** is listed. 15.5 SEER, 12 EER, 9.5 HSPF, 34K BTU at 17*....
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    Waterloo, can you tell me what the numbers would...

    Waterloo, can you tell me what the numbers would be with the Goodman VS furnace...GMV80905CXB? Mine is a 3 T system, would use the CAPF3642 coil I think w/ TXV.
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    so...Amana is not Goodman...?

    That's what I was thinking, Robo...if the stainless steel exchanger makes a difference to me, I should go w/ the Amana furnace rather than Goodman, right? Are there also noise level or other...
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    Also forgot to ask...what is blower door testing,...

    Also forgot to ask...what is blower door testing, how do you know if someone is doing it right, what's it usually cost?
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    Mark, I've not heard of Nordyne's IQ drive...

    Mark, I've not heard of Nordyne's IQ drive system...what is unique about it?
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    So...it really is that simple...split system dual...

    So...it really is that simple...split system dual fuel simply means a heat pump condensor outside plus furnace/blower inside? Duh. Thanks for schooling me ComfortDoc.

    So, does it take a...
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    can Amana + Amana = dual fuel??

    Almost bit the bullet to replace our 20+ yr old Lennox split system 3 yrs ago...now we're pretty much at the have-to stage. Located in NE Kansas, would like to go 15-16 seer dual fuel if not too...
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    Thanks airworx, sorry I wasn't clear...my tech...

    Thanks airworx, sorry I wasn't clear...my tech said he doesn't care for either Goodman or Amana, but the system I listed was Goodman, not Amana.

    How is Carrier heat pump different? Interesting...
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    About ready to bite the bullet and replace our 18...

    About ready to bite the bullet and replace our 18 year old Lennox split system (~9-10 SEER now maybe? has TXV, 80% gas furnace) for a heat pump...gas prices headed up and it seems I have to fix...
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    How close to that original 10 seer would the unit...

    How close to that original 10 seer would the unit probably be operating now?
  43. Doc, can you explain what you mean saying that...

    Doc, can you explain what you mean saying that dehumidification cancels out the VS efficiency gain?
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    Okay, let me ask another way: how does one know...

    Okay, let me ask another way: how does one know it's time to replace a system? Ours is about 18 years old...was good in its day, but what SEER are we probably getting now? How long till the heat...
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    Here is my existing Lennox split system, was here...

    Here is my existing Lennox split system, was here when we bought the house in '99:

    Condensor:
    Model HS19411V(U?)2P, Compressor RLA 13.5 LRA 78.8, Serial# 5186M03735 (0886 printed under number)...
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    Decided after earlier thread on nat gas prices to...

    Decided after earlier thread on nat gas prices to go w/ heat pump replacement system but $$ tight of course. Stumbled across something James wrote in another forum back in Feb 2003:

    "If they are...
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    Much appreciated. Lots of helpful info, thanks...

    Much appreciated. Lots of helpful info, thanks to all.
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    Sorry wyounger, I didn't see your offer to...

    Sorry wyounger, I didn't see your offer to compare the systems till just now. Here are the model #'s:

    14 SEER Ruud HP
    UPPA043JAZ condenser
    UBHK24J11NFD airhandler

    13 SEER Ruud HP...
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    Wow!! You guys are tremendous. Sounds like I...

    Wow!! You guys are tremendous. Sounds like I need to get on the stick, contact Westar, and install that heat pump before the north winds blow. Thank you!!
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    Thanks all for the good insights...this forum is...

    Thanks all for the good insights...this forum is really helpful. Doc esp thanks for explaining that HP's keep working w/ electric backup but don't w/ gas backup...never understood that before. I'd...
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