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  1. Replies
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    Clamping on a solid ice cube won't transfer heat...

    Clamping on a solid ice cube won't transfer heat well. This is why you calibrate to a ice bath. That is so you KNOW the robe is submerged in 32F.
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    'calibration' is a complete science on its own. ...

    'calibration' is a complete science on its own. Ultimately, it is the process of making your instrument report an indication that is accurate. This is usually done by comparing to a 'standard'.
    ...
  3. Sorry about your experience, but that is not...

    Sorry about your experience, but that is not normal or expected. There is nothing that makes a mini-split perform any different than a conventional ducted AC. If you are unsatisfied, you need to...
  4. Plenty of homes here in SoCal have the furnace in...

    Plenty of homes here in SoCal have the furnace in a closet off the hallway, with a louvered door, pulling air from the house, without a definite outside air vent. I can't speak to the current code...
  5. If you really want to calculate room by room heat...

    If you really want to calculate room by room heat loads, you can do as you describe. Then, add them together, and determine the total heat load, and more specifically, what percentage of the whole...
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    Having steam and hot air blowing on the stat is...

    Having steam and hot air blowing on the stat is going to cause the AC to run MORE, making the space colder than desired setpoint. If your house is not cooling enough now, moving the stat is not...
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    Its disconcerting that they are doing their load...

    Its disconcerting that they are doing their load calc to decide between 4 of 5 ton - instead of letting the load calc actually work to tell exactly what the load is. Going in with a preconceived...
  8. For many many years, energy prices were low...

    For many many years, energy prices were low enough that there was not enough emphasis placed on proper building science. This resulted in most of the trade working off thumb rules, because they got...
  9. like bear said, without being there, we can't...

    like bear said, without being there, we can't directly comment on your combustion air flow. One thing is certain, you DO need to have proper supply of air to your furnaces and water heater. That...
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    We cannot say over the internet. The proper way...

    We cannot say over the internet. The proper way to determine this is:

    ACCA Manual J Heat Load calculation: Determines the amount of heat load throughout the structure. From this, you can...
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    That big system, with the tiny return, is WHY you...

    That big system, with the tiny return, is WHY you current system:

    1) removes humidity so well. The air flow is so restricted, the discharge air off the coil is very low, maximizing moisture...
  12. I think its measurement problems you are seeing...

    I think its measurement problems you are seeing now. The only reason RH would 'jump' like that is due to temperature dropping.
  13. There are so many advantages to a larger...

    There are so many advantages to a larger dehumidifier, that if you are going to install one at all, you might as well install one that will dehumidify the whole house. However, the problem right now...
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    Not specifically in this case, but I have seen it...

    Not specifically in this case, but I have seen it on water booster pumps, not a bypass, but a dump to drain, on high pump case temp.
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    Gold Bond and loose fitting pants... helps with a...

    Gold Bond and loose fitting pants... helps with a sweaty drain...
  16. who added the spray foam 'extra'? Spray foam is...

    who added the spray foam 'extra'? Spray foam is great, because if can get in a fill hard to access areas, so it is the best option for sealing an existing structure. It is more expensive, I...
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    Agree with this - the trade-off is that you...

    Agree with this - the trade-off is that you continue to lose heat by putting it at the far end of the loop. If you don't need the water at ready temp everywhere in the building, you can instead put...
  18. I thought the gubbment was gonna pay for it all?

    I thought the gubbment was gonna pay for it all?
  19. Just from guessing, I'd say that your area is...

    Just from guessing, I'd say that your area is maybe borderline on whether a dehumidifier would be worth it. Most of your high dewpoint weather coincides with high temperatures, so in those cases,...
  20. We're not supposed to provide legal advice on...

    We're not supposed to provide legal advice on this board. However, regarding his 'right to repair', it essentially comes down to damages. If he comes out and fixes everything, what damages have you...
  21. Not a ton of info to go on. I certainly think...

    Not a ton of info to go on. I certainly think more indoor units is better, as with mini-splits, you don't have the air mixing around the home. The non-master bedrooms, for instance, on the 2nd...
  22. I can see it happening more if hydronic makes a...

    I can see it happening more if hydronic makes a bigger push into the medium sized residential market. Chillers and boilers are much more 'black box' appliance style devices, sizing isn't as...
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    Just install a pressure switch on the high side...

    Just install a pressure switch on the high side that will kick on the fan when it's REALLY needed.
  24. One of the reasons I said to just leave the...

    One of the reasons I said to just leave the hygrometer in the same location, was that humidity sensors, especially cheap ones, are very shaky devices. Changes in air flow near them will throw them...
  25. Anyone else's guestimation on this forum isn't...

    Anyone else's guestimation on this forum isn't going to be any 'better' than yours.
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