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  1. Thanks for the input - though you've managed to...

    Thanks for the input - though you've managed to confuse me a bit (not a great challenge on this topic!).

    I was told the unit is a heat pump - it runs in the winter and gets all frosty on the...
  2. Old Payne vs New Amana - Estimation of Savings?

    We have a 4 ton "High Efficiency" Payne - model 541DB048 - made in Dec 1986 and have no idea what its SEER was/is. We're trying to understand what benefits there might be for going to a newer, more...
  3. Thanks, Dash, for the quick response. Just to...

    Thanks, Dash, for the quick response.

    Just to clarify (that lack of coffee thing again :D ) - since I can't have a furnace, and since the furnace affects the SEER/EER/HSPF (?) then any AHRI...
  4. Furnaces Listed with Heat Pump Models?

    Sorry - probably not enough coffee today and it's too late to add more...

    My existing system doesn't have a furnace (just a plain vanillia air-source heat pump) and since our subdivision doesn't...
  5. Row Limit on Save to Excel Option

    For what it's worth, clicking on the button that saves the search result only brings the first 251 or so rows into an Excel workbook (Excel 2000 or Excel 2007 - can't test Excel 2003).

    Paging down...
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    Baffling Baffles

    It seems like heart's desire would be an outer tube big enough to hold several copper tiubes in it, with water in the tubes and refrigerant on the outside. But, I don't suppose PVC could take the...
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    Spirotherm

    According to him, the fancy stuff needs to be on the side with the most resistance to heat transfer. So, if you are moving heat from water to air, the air side has the most resistance. If you are...
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    3,277

    Water On The Inside And Counter-Current Rulz!

    (I have a brother-in-law who is a chemical engineer - shoot him if you don't buy the argument on why water should be on the inside of the tube :D )

    In terms of heat transfer, there are three...
  9. If you are still looking for a formula, here's a...

    If you are still looking for a formula, here's a couple from Excel.

    Be warned that the nature of curve-fitting data means that there are going to be errors no matter how many points you have - and...
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    Thanks for the comments. I've got no axe to...

    Thanks for the comments. I've got no axe to grind, guys.

    I've just noticed that there have been several posts in the last month or so - like the one titled "XL16C - so far not happy any ideas?"...
  11. Thread: return size ?

    by jhcoxx
    Replies
    26
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    1,746

    If you can do so, you might have better luck...

    If you can do so, you might have better luck posting this in one of the Professional forums. Apparently there ain't no one here just now except us Home Owner chickens... :D
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    Recording "How It Used To Work" ?

    Seems like there have been a lot of posts recently where the Home Owner (yes, I know there is a common abbreviation for that term, but I'm not that fond of calling myself or anyone else that :D ) is...
  13. Ryan - thanks for the info - HSVTC isn't an...

    Ryan - thanks for the info - HSVTC isn't an abbreviation I run across every day!

    Gary - thanks for pointing out that the XP15 is the only single-stage unit in the bunch. In terms of needing two...
  14. ARI-Based Operating Cost Comparison of Lennox XP15, XP16 and XP19

    OK, I'm a bit confused (and maybe dazed, too...) by what my comparison seems to be telling me, so I'd appreciate anyone who can find any mistakes.

    For background, I've been worrying about our heat...
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    Test Formatting 2

    ...........................Heat...........Heat
    Cool......................High...........Low Est$ Est$ Est$
    BTU.....EER...SEER...BTU..HSPF..BTU Cool Heat Total

    36000 12.20 15.20 31000 9.00 19400...
  16. Thread: Test Formatting

    by jhcoxx
    Replies
    0
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    345

    Test Formatting

    Heat Heat
    Cool High Low Est$ Est$ Est$
    BTU EER SEER BTU HSPF BTU Cool Heat Total

    36000 12.20 15.20 ...
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    Longer Lineset Needs Larger Size?

    Old unit is still running, but it's got to be on its way out (20+ years old). It will probably be replaced with a 410 refrigerant unit, and so my question is: With a lineset run of 40 feet, with 8...
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