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  1. As much as i hate to say it. There are alot of...

    As much as i hate to say it. There are alot of options in the home automation world.

    You would have 1 single control, with multiple room sensors.

    Control all room tempertures from the single...
  2. Rule 3, no trolling.

    Rule 3, no trolling.
  3. number 2, your are trying to get us to help fix...

    number 2, your are trying to get us to help fix your broken unit.


    If you want access to the pro side, register as a pro, and provide your licensing to the membership comittee. Problem solved.
    ...
  4. Thread: Pump down

    by hvacvegas
    Replies
    32
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    655

    But you trust him to install a unit. This...

    But you trust him to install a unit.

    This sounds insane.
  5. Cool story bro. The site isnt for diy help. ...

    Cool story bro.

    The site isnt for diy help.

    Its for hvac guys to bs, behind closed doors, and for us to help people with general questions.

    Also, theres like 80,000 threads that kind of...
  6. Why didnt you buy the board from the tech?

    Why didnt you buy the board from the tech?
  7. Other than your tenets have no control, you csn...

    Other than your tenets have no control, you csn monitor, and change temps withoit walking there, no.

    Auto mode is rough on multiport units in the us market.

    Different perception of comfort.
    ...
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    Seen it many times. Left side, in the bend. ...

    Seen it many times. Left side, in the bend.

    Personally, ive never understood adding valves.

    If you are supposed to weight the charge, and you have a leaking unit, its all coming out anyways.
  9. Replies
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    Are you building this to cool computer equipment?...

    Are you building this to cool computer equipment? As in specifically, not generally.
  10. I would look up something call kumo cloud. Its a...

    I would look up something call kumo cloud.
    Its a mitsubishi module that you can control everything from your phone.
  11. Replies
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    We do gas and go all the time. I have people...

    We do gas and go all the time.

    I have people that have paid for refrigerant 5 times in 5 years.
    Cheaper than a new unit, and they dont want to dump alot of money into fixing a unit, that may lose...
  12. You could always just have your installer put in...

    You could always just have your installer put in a real filter.

    Or you can have him run a load calc, figure out how much tonnagw you actually need.
  13. Replies
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    How hot was it that day. Maybe they were just...

    How hot was it that day. Maybe they were just busy.

    I wont do a leak search if im busy.
    Fill up and move on, come back for a leak search when im not busy.
  14. I have been doing clean and checks on these units...

    I have been doing clean and checks on these units for years, and have never replaced the gasket.
  15. Sounds good? Have you contacted your installer?

    Sounds good?

    Have you contacted your installer?
  16. I dont think you are measuring properly.

    I dont think you are measuring properly.
  17. Replies
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    https://i5.walmartimages.com/asr/6f7465e4-0248-4f9...

    https://i5.walmartimages.com/asr/6f7465e4-0248-4f9b-8465-ecc634f8bdfb_1.8653cd681d16f88e0790b594449a8eb9.jpeg
  18. yes. Are you measuring interior or exterior...

    yes.

    Are you measuring interior or exterior for the drop?
    If exterior, take away 2", or possibly 4" if its 2in ductboard.


    I mean, technically you can move 5 tons of air, just not at a .01...
  19. Agreee. No way he is moving 5 tons of air through...

    Agreee. No way he is moving 5 tons of air through that box.

    Looks like it could have been almost a foot taller.
  20. Sometimes a local distributor will give us bad...

    Sometimes a local distributor will give us bad information.

    We cant order directly from a manufacturer.

    So if a contractor is told by a supply house no dice, then no.


    Securing parts from a...
  21. Is this a "real" VRF. As in, you are in an...

    Is this a "real" VRF.
    As in, you are in an apartment or condo, and everyone else is tied into the same outdoor unit?

    If so, stop. seriously, stop.

    If you knick a coil, you are talking about in...
  22. Replies
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    345

    No, thats legitimate, and i applaud your...

    No, thats legitimate, and i applaud your contractor
  23. Replies
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    496

    I once had tech support tell me to replace a eev...

    I once had tech support tell me to replace a eev head, when a unit was flat.

    Either the sensor is bad, or correctly reporting poor temp.was the sensor checked? Ohmed out.

    Most troubleshooting...
  24. "Small business", that buys units from a company...

    "Small business", that buys units from a company in china, and just turns the box.

    They make literally nothing.
    Everything is prelabed, pre boxed.

    They are actually just a shipping and...
  25. Replies
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    397

    That furnace comes shipped with a 5ton drive. ...

    That furnace comes shipped with a 5ton drive.

    Which, if they left it at standard settings, would put you at roughly 20% too much airflow.


    Since the new install, has the humidity been a little...
  26. Next time you try and buy anything for your car,...

    Next time you try and buy anything for your car, dont tell them what car you have other than brand.

    See what they do.


    These special acroynms he is using, is literally whats listed on the data...
  27. Replies
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    397

    Gas furnace or electric? If gas furnace,...

    Gas furnace or electric?

    If gas furnace, probably never set blower speeds properly. It can come fron the factory as high as 50% too much.

    If air handler, it already comes shipped fairly close....
  28. Probably not setup properly. Generally auto...

    Probably not setup properly.

    Generally auto mode allows a swing in the opposite direction.

    Set at 75, lets it get to 77, turn on air

    Set to 75, drops to 73, heat turns on.
  29. There it is.

    There it is.
  30. Air filtration has hit china yet. Use an...

    Air filtration has hit china yet.

    Use an external filtration system
  31. I literally have had nightmares of installers...

    I literally have had nightmares of installers telling me that.
  32. Makes 0 sense. Dont use a plumber. Use an...

    Makes 0 sense.

    Dont use a plumber.
    Use an hvac guy.

    Are you on propane?
  33. Replies
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    No, it wont. What it will do is a unit that...

    No, it wont.

    What it will do is a unit that calls first will get all the capacity.
    I cant explain if, but ive seen it.

    If that unit wont cool even with the other off id lean eev.
  34. Replies
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    496

    Low charge. Check your flares, or the back left...

    Low charge. Check your flares, or the back left side of the rear indoor coil.

    Or an eev.
  35. Replies
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    626

    Perfect. All we need to help is: Superheat....

    Perfect.
    All we need to help is:

    Superheat.
    Subcool
    Suction pressure
    Liquid pressure
    Airflow
    Compressor amps
    Pro membership
  36. Pull and clean blower. Clean evaporator....

    Pull and clean blower.
    Clean evaporator.
    Replace plenum.
    Dont care about the last picture.

    No replacement from my end.
  37. Replies
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    Thats your leak.

    Thats your leak.
  38. That whole trane thing is a marketing ploy. Its...

    That whole trane thing is a marketing ploy.
    Its frozen over, but uses a EPR valve to control compressor capacity and always have a decent superheat.

    Op, yes. You could damage the unit. Would it...
  39. Replies
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    All this over a question about attaching fans to...

    All this over a question about attaching fans to a window unit.
  40. Replies
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    https://hvac-talk.com/vbb/threads/2242313-Theoreti...

    https://hvac-talk.com/vbb/threads/2242313-Theoretical-HVAC-question
  41. I havent installed or worked on a modern goodman...

    I havent installed or worked on a modern goodman in years.

    In the past, they were literally the same unit.
    You could not specify goodman/amana for their air handlers.


    What it looks like to...
  42. Replies
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    820

    Sounds like it was simplified for a person who...

    Sounds like it was simplified for a person who doesnt understand hvac.
    Normally i dont get into thermodynamics with my customers either.
  43. They are different control boards also. One can...

    They are different control boards also.
    One can handle an EEV, while the other cannot.

    Which explains the added transformer.

    Except that its not using an EEV.
  44. Replies
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    571

    Airflow.

    Airflow.
  45. Replies
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    1,445

    Meaning his infiltration rate is probably...

    Meaning his infiltration rate is probably actually higher.

    Meaning his manual J is artificially low.
  46. Replies
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    how are you taking pressure readings at the...

    how are you taking pressure readings at the evaporator vs the condenser....?
    You added ports at the evap coil?

    Sounds more like you were checking the evap of a unit not running, and the unit you...
  47. I get this all the time with high efficiency...

    I get this all the time with high efficiency furnaces.

    You are hearing the blower move air across the heat exchanger.
  48. Replies
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    I don't know squat about manual J, but does...

    I don't know squat about manual J,

    but does 146cfm infiltration seem right to everyone? Seems super tight, from the pictures I see of people doing blower door tests.
  49. Replies
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    1,601

    what type of thermostat do you have?

    what type of thermostat do you have?
  50. To add to shell: Not all connection to the...

    To add to shell:
    Not all connection to the distributor are the same.

    So carrier uses those little flow raters, but uses a gasket.

    I got an adp (i think) coil that used the same as carrier, but...
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