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  1. Replies
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    Wow! You responded to a thread from 14 years ago!...

    Wow! You responded to a thread from 14 years ago! I wonder if they’re still alive. What brought you to it?
  2. Replies
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    Until he gets the anwer he wants?

    Until he gets the anwer he wants?
  3. Replies
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    I doubt that even two 10" return ducts are big...

    I doubt that even two 10" return ducts are big enough for the return. That could cause the blower to pull in air from any available opening, including from the water heater stack in the garage. ...
  4. I just found a short youtube video that...

    I just found a short youtube video that demonstrates the difference between behavior of air at supply and return locations.

    https://www.youtube.com/watch?v=uOHnv8vUnLc
  5. Thread: Lockdown ribs

    by kdean1
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    353

    YUM! Can you digitize them and have Rundawg share...

    YUM! Can you digitize them and have Rundawg share them?
  6. Sorry to hear that. The PVC should be supported...

    Sorry to hear that. The PVC should be supported every 4 feet.

    It sounds like you need to have the entire system assessed.
  7. It depends on the register. Cheap ones won’t...

    It depends on the register. Cheap ones won’t accomplish it. Air velocity and throw will achieve it. We can discuss theory all we want.
    The OP has to tell us if the room is evenly conditioned.
  8. Nothing is true just because you “heard it...

    Nothing is true just because you “heard it somewhere.”
    If the supply register has the proper throw, then they are correct. The return doesn’t pull hard enough to short cycle the air.
    If the air in...
  9. Replies
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    You should digitize all of it. Then you and...

    You should digitize all of it. Then you and rundawg could combine your libraries. Then upload all the files so we can share them. :yes:


    Oh, and don't forget to catalog and cross reference all...
  10. That's a lame excuse from someone unwilling to...

    That's a lame excuse from someone unwilling to learn. Stick to your guns. You may have to find a contractor who has actually learned something.
  11. Replies
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    Does Dallas have humidity? I love our...

    Does Dallas have humidity?
    I love our dehumidifier in our green grass area in Ohio.
  12. Replies
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    Wow! That’s getting expensive. Evidently none of...

    Wow! That’s getting expensive. Evidently none of those parts were bad. Tell us what you measured instead of what you guessed at.
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    Don’t choose ANYTHING until you have a load...

    Don’t choose ANYTHING until you have a load calculation in hand. Brand means nothing, the installation means everything, duct design included.
  14. Replies
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    The AOP forum is not the place for part numbers....

    The AOP forum is not the place for part numbers. You should have this post moved to the tech forum.
  15. Thread: Shake my head

    by kdean1
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    That’s the kind of work that led me to leave one...

    That’s the kind of work that led me to leave one company and go out on my own.
  16. Replies
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    It can be done. However, I know of no thermostat...

    It can be done. However, I know of no thermostat that will turn off the fan when auxiliary heat is energized. Does your current set up turn off the heat pump at a given outdoor temperature? If the...
  17. That’s the experience all of had the first time....

    That’s the experience all of had the first time. Twice recertified and still learning.
  18. Thats guessing, not diagnosing. You could replace...

    Thats guessing, not diagnosing. You could replace lots of parts and never find a solution.
  19. Replies
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    785

    " Why are you arguing over a feature I want, like...

    " Why are you arguing over a feature I want, like and use? "

    Because we have more experience with thermostats and setbacks. The advice is free but you don't have to take it.
  20. X2 Though, the humidifier will have a greatly...

    X2

    Though, the humidifier will have a greatly reduced capacity when the heat pump is running because of lower plenum temperature. That's where the steam humidifier is superior because it is not...
  21. Have you considered a steam/electrode humidifier...

    Have you considered a steam/electrode humidifier which can be mounted remotely?
  22. What fool put the manuals against the vent pipe?

    What fool put the manuals against the vent pipe?
  23. Discussion on closing registers to save money - Linked

    Something you guys might enjoy reading about closing registers.

    I recently re-read this post by Allison Bailes on the Energy Vanguard site. His blog always presents informative and well reasoned...
  24. Replies
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    I have monitored the humidity of our bathroom. It...

    I have monitored the humidity of our bathroom. It takes 15-20 minutes to reduce RH from 75% back to 50%.
    I installed a timer for the fan. My wife doesn't like the fan running while she's wet so we...
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    Steam? You have water in the vent at 212°?...

    Steam? You have water in the vent at 212°? There's your problem!
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    Individual rooms overheating when the doors are...

    Individual rooms overheating when the doors are closed indicates air is not circulating through them. The duct system needs to be revised and balanced.
    And it may be that the furnace is too big. ...
  27. We can't help you with DIY. Site rules. Even...

    We can't help you with DIY. Site rules.

    Even if such help were allowed, it is not possible to identify the plug without a wiring diagram or the model number.

    Home warranty companies are a...
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    FOR CRYING OUT LOUD! The last post in this thread...

    FOR CRYING OUT LOUD! The last post in this thread was in 2009, 10 YEARS AGO! Have you no manners?
  29. You're looking for a way to lower your cost. We...

    You're looking for a way to lower your cost. We have costs as well and that's why we charge for our time, our tools, our training, our vans, our insurance, our office, our taxes, etc...

    The...
  30. It appears you'll be buying the equipment online....

    It appears you'll be buying the equipment online. That's cutting corners. Warranty for that often does not exist. Finding a qualified contractor willing to install it may be impossible. Getting an...
  31. Replies
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    Them you have a new friend! It does pay to asses...

    Them you have a new friend! It does pay to asses them first.
  32. Replies
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    Baloney! Get a better tech.

    Baloney! Get a better tech.
  33. Replies
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    689

    It is possible that the replacement motor is not...

    It is possible that the replacement motor is not wired correctly. Another possibility is that the original motor was set for the incorrect speed but the new one IS on the correct speed.
    Did the...
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    I find that they’ll give you some space by asking...

    I find that they’ll give you some space by asking if they know their personal savior Jesus.
  35. Replies
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    I hope you really don’t expect you’ll never need...

    I hope you really don’t expect you’ll never need to get a technician to come to your house. HVAC systems, especially dual fuel systems, require careful set up and maintenance.
    There are numerous...
  36. Replies
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    A tech who measures stuff. Are you really a...

    A tech who measures stuff.

    Are you really a contractor?
  37. Why not run the diagnostic instead of letting us...

    Why not run the diagnostic instead of letting us do the work for you?
  38. Replies
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    There are thermostats that say heat pump, but NOT...

    There are thermostats that say heat pump, but NOT with auxiliary heat. They will work with a heat pump, but that’s not useful in our zone.
  39. Replies
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    HVAC also includes non-central air conditioning...

    HVAC also includes non-central air conditioning such as ductless systems for a single room.

    OP, you need to be more specific.
  40. Replies
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    I would immediately disqualify contractor #2...

    I would immediately disqualify contractor #2 because he failed to determine what size is needed. This is the reason I don't do a load calculation prior to getting a signed contract. If he doesn't...
  41. I suspect that's an exaggeration. Few houses have...

    I suspect that's an exaggeration. Few houses have zero infiltration and that's an unreasonable target.
    How tight would a house have to be for NO air to infiltrate and how long would it take for the...
  42. Consider all the appliances that blow air out of...

    Consider all the appliances that blow air out of the house - bathroom fans, range hood, clothes dryer, anything that burns fuel such as a water heater or furnace (if you have those). The house must...
  43. Thread: New Member

    by kdean1
    Replies
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    356

    Welcome back! :putergreet:

    Welcome back! :putergreet:
  44. Was your old thermostat a Nest? They are...

    Was your old thermostat a Nest? They are notorious for intermittent problems.
  45. Terminology correction - "heat pump", not "air...

    Terminology correction - "heat pump", not "air heat pump."

    As the others have asked, how did you arrive at the sizing of the equipment? A mistake now will plague you for years. Insist on a load...
  46. Replies
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    Furnaces are all equipped with a limit. But that...

    Furnaces are all equipped with a limit. But that behavior is not what a limit switch does.
    If the control board was replaced a year ago it may not be at fault.

    You need a tech on site to find...
  47. Replies
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    Thanks for the update. We’re glad you got a...

    Thanks for the update. We’re glad you got a satisfactory outcome.
  48. The furnace must overcome the resistance of the...

    The furnace must overcome the resistance of the duct system, coil, and filter. Most duct systems are undersized. No chart can tell you what the static pressure is. It must be measured.
    A qualified...
  49. Are you a tech?

    Are you a tech?
  50. Replies
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    Did you take the plastic wrapper off the filter?...

    Did you take the plastic wrapper off the filter? It has happened?

    And Nest is a terrible thermostat.
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