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Type: Posts; User: genduct

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  1. Replies
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    I thought the big problem was not having enough...

    I thought the big problem was not having enough capacity for the connected load? Wonder why you couldn't just use a smaller nozel if you think the "overfire" was too high?
  2. I think the Non Chemical / JM reference was made...

    I think the Non Chemical / JM reference was made to do exactly what has happened....You asked the question Chemical what?
    I think JM is calling your attention to the potentially bad fire...
  3. Replies
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    1,394

    The connector vs duct issue is a matter of the...

    The connector vs duct issue is a matter of the flex passing 1 or 2 additional tests like flame penetration (I think) almost all the manufacturers have gone to the DUCT classification but consider the...
  4. George has it right! The return has top be large...

    George has it right! The return has top be large enough to provide a low resistance path back to the unit And a brilliantly placed return grill (location( will not make up for not enough or properly...
  5. If Nat Gas is aviliable and the Utility doesn't...

    If Nat Gas is aviliable and the Utility doesn't discount Heat Pump use any longer than 90% Gas Furnace best bet. You can hedge your bet somewat by installing a heat pump split instead of just a...
  6. If your unit is charged and running properly then...

    If your unit is charged and running properly then Seems like you may have a problem with the quality of the home itself...... Get a blower door test top see how much infiltratration you have Then...
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    245

    Your Gravity duct system worked with gravity...

    Your Gravity duct system worked with gravity because it was low resistance / oversized!! That means it had next to no real pressure and a lot of surface area that makes Energy rater's advice about...
  8. Me thinks that you may not be as comfortable as...

    Me thinks that you may not be as comfortable as you would like AND you may have concluded that the location of the diffuser is the reason for the situation. You first need to figure out if you are...
  9. Replies
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    883

    The idea is to get the right amount of air to the...

    The idea is to get the right amount of air to the space that does the job.
    If you don't have airflow problems and just don't like the "look " of the standard registers than that is just a...
  10. Replies
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    2,148

    Redundant and oversized? There are enough...

    Redundant and oversized? There are enough safeguards in the design calcs to handle this. Oversizing will not only increase cost but also may not remove humidity as well as a right sized or even a...
  11. Thread: Hrv yes or no

    by genduct
    Replies
    3
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    364

    Without a blower door test to MEASURE...

    Without a blower door test to MEASURE Infiltration, and how effective your insulation job is, you can only Guess
    My engineer Son has a 9x11 poster that says " Without the DATA you are just someone...
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    Hey Energy! I am suprised you didn't suggest...

    Hey Energy! I am suprised you didn't suggest they just fill the whole space up with closed foam and call it a day
    Mike
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    1,898

    That' R8 2 inch duct board

    That' R8 2 inch duct board
  14. Replies
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    1,898

    This might make the problem worse with an even...

    This might make the problem worse with an even greater supply of humid air

    Consider replacing the flex with a R* duct board trunk with short flex tie ins, that will probably have half the surface...
  15. Replies
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    697

    Do you really set the temp to 68? with those...

    Do you really set the temp to 68? with those low temps, do you see your breath when you walk into your home? Insulation is there to slow the heat transfer, but it is also there to controll...
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    456

    Your insight is right on! The unit needs a low...

    Your insight is right on! The unit needs a low resitance path for the air to get back and found it with the 10x10 If you have a standard water heater in the same space as the heater, i would...
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    702

    Peter, you said "or I should clean my home...

    Peter, you said "or I should clean my home diligently and change the filter often." You clearly have high personal standards and I believe that unless your previous owners NEVER changed filters...
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    1,898

    I think you'll find that you need LIQUID WATER...

    I think you'll find that you need LIQUID WATER aand Food ( dirt) to grow BUGS ( mold) and the temp range is not the controlling factor
  19. Replies
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    1,326

    I thought that the idea of chilled water is to...

    I thought that the idea of chilled water is to get a deeper (more rows) coil to get at that latent load. a DX coil would freeze with the deeper coil
  20. Replies
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    dan is right your smart phone has an app that...

    dan is right your smart phone has an app that can measure dbA and 35 sounds reasonable 30 would be a Library level
    you need liner or board for those equipment "insertion" noise
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    I respect and defer to Energy's extensive...

    I respect and defer to Energy's extensive expierence in these kinds of issues, although I am a little concerned about what I can't see.
    Rust means liquid water. Liquid water and organic material (...
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    570

    The real unknown is infiltration! Have a blower...

    The real unknown is infiltration! Have a blower door test done to see how "tight your home is" Also here is where you might improve your situation so that "right sizing" is done with more data. ...
  23. Whoops, elec baseboard, forget hybrid but it...

    Whoops, elec baseboard, forget hybrid but it doses raise the interesting question of using existing vs backup resistance heat
    Need to read and not scan
  24. You didn't say you were going to abandon your hot...

    You didn't say you were going to abandon your hot water system.
    I would suggest you consider a hybrid approach where you would extend your hot water system to HW coils in the air handlers so that...
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    Oh to answer the original question, I don't...

    Oh to answer the original question,
    I don't see any reason why a motorized damper couldn't fix the new addition problem without going for the entire system. Of course your main T Stat will turn...
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