Search Results - HVAC-Talk: Heating, Air & Refrigeration Discussion

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  1. Sealing the ductwork can never hurt anything...

    Sealing the ductwork can never hurt anything unless it is so leaky that upon sealing it the static pressure in the system becomes too high for the blower in the air handler or furnace.

    In your...
  2. Replies
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    221

    Is the basement open to the other floors...that...

    Is the basement open to the other floors...that is, there is either no door between the basement and the first floor, or if there is a door (or more than one) it stays open all of the time?
  3. Okay, let's run with this potential vs. my...

    Okay, let's run with this potential vs. my earlier suggestion. Now, if you find the piston has trash in it, the first thing that should run through your mind is "Where did that trash come from?" If...
  4. There are 220 volt two pole breakers that are...

    There are 220 volt two pole breakers that are GFCI.

    Is there a permit pulled on this installation? If so electrical inspector may require GFCI double pole for 220 volt in addition to Daikin...
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    1,473

    If you move the outlet next to where the cable...

    If you move the outlet next to where the cable and speaker connections are, you then have a free wall behind that chair to install an additional return air gril.
  6. To Wes: I think you need to SLOW DOWN. This...

    To Wes:

    I think you need to SLOW DOWN. This type of situation is never resolved satisfactorily by taking wild swings and hoping for the best.

    Think about this: what would cause you to have...
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    By "vent" do I assume correctly you're referring...

    By "vent" do I assume correctly you're referring to the HVAC supply outlet and not a bath exhaust fan? For the sake of my reply I will assume you mean HVAC supply "vent" and not a bath exhaust fan.
    ...
  8. If the installation instructions say to use one,...

    If the installation instructions say to use one, and you want one installed, find another electrician who won't argue with you but will give you what you request.

    If the indoor portion of the mini...
  9. If you either connected the condenser to the...

    If you either connected the condenser to the wrong line set, or the 24 volt signal to the wrong condenser, you could have an air handler icing up somewhere, but not necessarily in the apartment...
  10. Does one system serve all three floors? Which...

    Does one system serve all three floors? Which floor is the thermostat located?
  11. Yes, but are you sure that condenser you tested...

    Yes, but are you sure that condenser you tested for 24 volts is the same one that feeds the evaporator in the apartment you're working in?
  12. Is the thermostat in apartment "A" controlling...

    Is the thermostat in apartment "A" controlling condensing unit and air handler in Apartment "A" and not "B" or "C" next to it?

    Former apartment dude myself. You run into crazy stuff at the...
  13. Six hour run time for 2400 square feet with...

    Six hour run time for 2400 square feet with thermostat set at 74 degrees with attic temps at 114 and outdoor ambient temps peaking at 92....not shabby.

    If you lived in a southern climate, and you...
  14. Are your HVAC ducts in the attic? Do you have...

    Are your HVAC ducts in the attic?

    Do you have an attic access hatch inside the house?

    Do you have any recessed light fixtures that penetrate into the attic?

    How many levels does your house...
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    For your Montana location you might think about...

    For your Montana location you might think about picking a room where you most often are during the hottest days, and installing a mini-split or window unit there vs. an entire central a/c system.
  16. Do you have any dampers closed on the supply air...

    Do you have any dampers closed on the supply air vents anywhere in the house?

    Do you have any furniture or other objects blocking the return air vents?

    Has the evaporator coil and blower wheel...
  17. I got your email and was reading it last night...

    I got your email and was reading it last night (first chance I got in three days to get caught up), plus the PDF you sent. I will respond to it soon as I found your approach to your roof very...
  18. Thread: XL20i noise

    by Shophound
    Replies
    14
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    363

    Frame rate of the video camera will make spinning...

    Frame rate of the video camera will make spinning fan blades appear to be turning slowly. The OP approached the condenser toward the end of the video and you can hear the wind of the fan in the...
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    Take the extended warranty if it's offered free...

    Take the extended warranty if it's offered free of charge.

    Did any damage occur while the system was low on charge? Possibly, possibly not. Unless deeper analysis is done, the potential is an...
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    Loaded question. If you lived in the DFW area I...

    Loaded question. If you lived in the DFW area I would invite you to sign up for my class on residential HVAC system design that I teach during the regular school year. We cover the very subjects you...
  21. If you hear compressor hum noise from the line...

    If you hear compressor hum noise from the line set within the wall when the system is running, that means one or more of the lines are contacting a framing member within the wall, which then...
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    The person advising you to do the "window test"...

    The person advising you to do the "window test" was my friend Mark Beiser (and also bmatthews). Regardless, I'm happy to hear you're willing to look deeper into the duct leakage potential....
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    The OP appears to have marched off in a huff...

    The OP appears to have marched off in a huff (perhaps having been called on his bluff?) :). So let's review his OP as an object lesson for future reference:




    As for the "I'm an engineer"...
  24. You don't need energy cost savings alone to...

    You don't need energy cost savings alone to justify what you want to do. Any time an HVAC system is starved for return air, you are not only NOT getting close to rated capacity, you are threatening...
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    Do I assume correctly that your ducts are in the...

    Do I assume correctly that your ducts are in the attic or crawl space or perhaps an unfinished section of a basement?

    If so, what I think it is happening is you have duct leakage that is causing...
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