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  1. Replies
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    The one that is hardest to get around for me is...

    The one that is hardest to get around for me is EER. I thought that measured full out steady state efficiency and the Carrier unit is rated almost 50% higher. Maybe this gets countered by the 150%...
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    Sorry, thought it was obvious... Comparing new...

    Sorry, thought it was obvious...

    Comparing new Carrier inverter based system with existing systems using the same technology (but having years to refine) and wondering why the huge discrepancy in...
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    The numbers I listed were for non-ducted indoor...

    The numbers I listed were for non-ducted indoor units on the VRV.

    The ducted numbers are worse (as you say), but are more of an apples to apples comparison:

    EER: 9.0
    SEER: 13.2
    HSPF: 8.8
    ...
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    Here's what I don't understand: Looking in the...

    Here's what I don't understand:

    Looking in the ARI database at 4 ton units:

    Carrier Greenspeed

    EER: 13
    SEER: 18.3
    HSPF: 12.5
  5. Replies
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    Word is that Carrier is coming out with a...

    Word is that Carrier is coming out with a inverter based heat pump in the next few months if you can wait that long.
  6. Any details on this? Timeframe?

    Any details on this? Timeframe?
  7. Replies
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    I think a heat pump is a good idea for Atlanta,...

    I think a heat pump is a good idea for Atlanta, but it gets colder from time to time than you might think. For example, here are the lows for the first couple of week of January this year:

    Jan 1 ...
  8. Replies
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    3,388

    Ha Ha, no, not an angry (or any other kind of)...

    Ha Ha, no, not an angry (or any other kind of) contractor - no worries :yes:

    I've updated my address in my profile.

    Thanks!
  9. Replies
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    I would like to get a copy of your requirements...

    I would like to get a copy of your requirements list if you don't mind sharing again.
  10. Thread: Manual J Results

    by jkish
    Replies
    32
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    1,693

    I've been interested in foaming my attic for over...

    I've been interested in foaming my attic for over a year, but getting reliable information is difficult - lots of different opinions on foam type (open/closed cell), depth required, etc.

    What did...
  11. Slightly OT, but where does the Daikin VRV-S...

    Slightly OT, but where does the Daikin VRV-S system stand with the federal energy rebates? Last I saw, they didn't qualify, but there was some talk about new ratings possibly changing that.
    ...
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    Robo is right - the credit availability has...

    Robo is right - the credit availability has nothing to do with your withholding level.
  13. Thread: New Design

    by jkish
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    499

    This will be out soon?

    This will be out soon?
  14. Replies
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    Huh? I said or implied nothing that indicated...

    Huh?

    I said or implied nothing that indicated my support or lack of support.

    Just pointing out that using the word "instituted" is inaccurate.

    FWIW, I think it would be a good thing subject...
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    I believe this is only a proposal, nothing is...

    I believe this is only a proposal, nothing is been instituted yet, and would require Congressional approval.
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    I believe they were extended this year through...

    I believe they were extended this year through the end of August.

    Check at http://www.carriercoolcash.com
  17. Replies
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    If you are only considering the HP performance...

    If you are only considering the HP performance between 30 and 65 degrees, the average COP is probably better than 3.25.

    I quickly looked up the COP ranges for a 4 ton Amana ASZ18 HP on low stage:...
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    I got a huge improvement in my heating/cooling...

    I got a huge improvement in my heating/cooling costs by sealing the duct boots to the drywall. I did this from the inside by removing the register grills and sealing with mastic.
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    Nordyne IQ Drive

    Nordyne IQ Drive
  20. Thread: Infinity series

    by jkish
    Replies
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    3,618

    I track my NG costs by taking the total billings...

    I track my NG costs by taking the total billings over the last 12 months divided by the total therms used over that last 12 months. Over the last 12 months my average billed price per therm including...
  21. Thread: Infinity series

    by jkish
    Replies
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    3,618

    1 Therm = 100,000 BTU 1KW = 3414 BTU Gas:...

    1 Therm = 100,000 BTU
    1KW = 3414 BTU

    Gas:
    1,000,000 BTU = 10 Therms
    95% Efficient furnace so input Therms = 10/.95 = 10.526
    10.526 Therms @ $1.25/Therm = $13.16

    HP:
    1,000,000 BTU/ 3414...
  22. But, since all brands have inflated SEER numbers,...

    But, since all brands have inflated SEER numbers, when you bought the unit with a 16 SEER rating you were only getting maybe 11 SEER installed.

    Still not sure I see how inverter technology is...
  23. Ok, I'll bite - How does the fact that SEER...

    Ok, I'll bite - How does the fact that SEER ratings are inflated across the board nullify the purpose of an inverter?
  24. So, how does that affect Nordyne more than any...

    So, how does that affect Nordyne more than any other manufacturer?

    Wouldn't a 22 SEER unit under lab conditions still be an improvement over 18 SEER unit under the same conditions?
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    Yes, I was assuming a setback in the rest of the...

    Yes, I was assuming a setback in the rest of the house. In the summer, I could see the MBR at say 75 and the rest of the house at 78 or something like that.

    As you say, it may not make enough...
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