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  1. Replies
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    Nothing like busting on a guy who's trying to do...

    Nothing like busting on a guy who's trying to do a good deed......
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    I agree, Mark...maybe another lost in translation...

    I agree, Mark...maybe another lost in translation "made in China" product instruction???? BTW, I have 7 ceiling fans in my home....
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    I have seen 2 inch filters at Home Depot,...

    I have seen 2 inch filters at Home Depot, although most of their stock is 1 inch. You can also get 2 inch filters online. Most people here aren't big advocates of 1 or 2 inch filters.....
  4. I guess I should have added this comment: if a...

    I guess I should have added this comment: if a component fails, it has a tendency to do it when relatively new. If it was me, I'd want a good explanation as to why the hard start was suddenly...
  5. I did read it. The compressor ran fine for a...

    I did read it. The compressor ran fine for a month, then a problem. A hard start was then added. Why wasn't it needed immediately after the compressor was installed?? Seems odd to me......
  6. Why would you have to pay anything on a one month...

    Why would you have to pay anything on a one month old unit??? No warranty of any kind??? Something fishy here....
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    [The automobile forum is on the other side of the...

    [The automobile forum is on the other side of the internet]

    [Edited by lusker on 08-21-2005 at 04:51 PM]
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    2000, sorry

    2000, sorry
  9. Replies
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    Carnack: The power vent does not run during...

    Carnack:

    The power vent does not run during the morning. My tests showed that it isn't worth using after the sun sets.

    You asked

    "You have a run time meters set up? You are out there...
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    Yes. PS: I assume you realized the graph I...

    Yes.

    PS: I assume you realized the graph I showed was attic temp, not "indoor temp" as it was labled. I showed these screen shots as examples.
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    Carnak: Maybe I should present some...

    Carnak:

    Maybe I should present some background, and some of your questions will be answered.

    I have a wireless weather station that connects to one of my computers. It has various remote...
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    No Uktra, I don't.....unlike your attitude, I'm...

    No Uktra, I don't.....unlike your attitude, I'm willing to believe that most times your argument is correct, and that PV's make things worse.....I just don't make the blanket statement that they...
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    For Uktra:

    Proof?

    http://en.wikipedia.org/wiki/Godel%27s_theorem
  14. Replies
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    I had postponed my biweekly orgies during this...

    I had postponed my biweekly orgies during this time, and I made sure no one did "The Time Warp" again......("It's just a jump to the left".......)

    Seriously, I don''t think you get it....I said I...
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    Uktra, I get tired of this "prove it" game: it...

    Uktra, I get tired of this "prove it" game: it can be asked of ANYTHING....lets look at MEASURED results and see if this makes sense:

    1) The only thing that determines cooling costs is how many...
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    What do you want me to "prove", Uktra??? I've...

    What do you want me to "prove", Uktra??? I've taken reams of data: I have remote temp sensors in the attic, graphed daily variables such as attic temp vs outside temp, vs indoor and daily power-vent...
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    Bingo!!!! The average power ventilator uses...

    Bingo!!!! The average power ventilator uses about 1/10 of the power that a 3 ton unit does...I think I stressed in the old (and LONG) power-vent post about the need to run the PV as little as...
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    Do some research on **RELATIVE** humidity.....

    Do some research on **RELATIVE** humidity.....
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    OK, I certainly agree that installing central AC...

    OK, I certainly agree that installing central AC should only be done by a "Pro", but what's wrong with a DIYer changing a basic thermostat if he has the technical ability, and knows what's he's...
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    A major component of dust is dead human...

    A major component of dust is dead human skin......my guess is that the lower winter humidity causes people to "shed" more, or at least this is a contributor to the excess dust.....
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    I think its the house that's tilted.....the AC...

    I think its the house that's tilted.....the AC looks fine!!!!
  22. A better question would be "What's the best/worst...

    A better question would be "What's the best/worst POST you ever read on HVAC?"
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    Why?

    Why?
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    Sure it (DC) will, at least until a steady state...

    Sure it (DC) will, at least until a steady state is reached, and all transients have decayed....but we can normally ignore this, so I'm nitpicking!!! Also, the type of current doesn't "cause"...
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    ""In conclusion, a capacitor actually shifts the...

    ""In conclusion, a capacitor actually shifts the phase back, canceling part of the inductance created phase shift.""

    Yep, the key words there are "canceling part"....by doing this, the power...
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    This EE also agrees.....a reversible AC motor...

    This EE also agrees.....a reversible AC motor changes direction when the cap is applied to an alternate winding, changing the timing sequence of the coils....
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    Bornriding is correct....an AC motor will...

    Bornriding is correct....an AC motor will inherently try to run near the rated RPM, unless its under/over loaded: all the horsepower does is insure that the motor is big enough to handle the load on...
  28. I have two 3-ton York units, over 15 years...

    I have two 3-ton York units, over 15 years old.....never had a problem except for normal wear and tear parts needing replacement (contactors, motor, etc).....I like the KISS concept (keep it simple,...
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    Your insulation looks very sub-par....

    Your insulation looks very sub-par....
  30. Replies
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    The reason for the higher voltage is NOT...

    The reason for the higher voltage is NOT "back-EMF".....as already mentioned, its from the winding ratios (transformer effect), which is a completely different effect.

    Back-EMF induced in the...
  31. Thread: temp probe?

    by robnjr
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    That's why you stir the water.....

    That's why you stir the water.....
  32. Thread: temp probe?

    by robnjr
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    If the glass is about half ice, and well mixed...

    If the glass is about half ice, and well mixed (keep stiring while the probe is in) it should be 32 deg: just keep the probe in the water near the bottom of the glass, not on the ice (you can use a...
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    ""They covered the evap before they started, then...

    ""They covered the evap before they started, then cleaned the evap with the whip/vac at the end, using the camera to inspect the coil for debris. Also, they threw in the 'Coild Cleaning' fro free -...
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    What's the CFM of this system?????

    What's the CFM of this system?????
  35. Thread: AC in the shop

    by robnjr
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    Gee, is that how you get a good HVAC tech??? Just...

    Gee, is that how you get a good HVAC tech??? Just go with the highest bidder??? If it only it were that simple......In my experience as a HO, I've seen NO correlation between high price and good...
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    Another view: ...

    Another view:

    http://oldfraser.lexi.net/publications/onbalance/1993/6-7/

    [Edited by robnjr on 07-22-2005 at 01:34 AM]
  37. Replies
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    Do you have flex ducts?? Its my understanding...

    Do you have flex ducts?? Its my understanding that they can easily be damaged by duct cleaning if its not done with great care....its also possible you now have some leaky ducts....

    One of the...
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    I don't get it. If it was the thermostat, a few...

    I don't get it. If it was the thermostat, a few simple meter readings should have shown that it was switching the contactor OFF. Maybe you have more than one problem......
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    You may also want to consider solar...

    You may also want to consider solar screens.....many (including myself) swear by them....
  40. Thread: register temps

    by robnjr
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    How long does it take to "deteriorate"???? I...

    How long does it take to "deteriorate"???? I have a 15 year old home with flex (it was built that way, not my choice, I admit), and I see no signs of deterioration yet. And yes, I have inspected...
  41. Thread: power vent

    by robnjr
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    Do a search for "power vent": you'll find several...

    Do a search for "power vent": you'll find several long threads and debates about them!!!!
  42. Replies
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    P Student: http://currentenergy.lbl.gov/tx/

    P Student:

    http://currentenergy.lbl.gov/tx/
  43. Replies
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    """BUT the problem is we don't have real...

    """BUT the problem is we don't have real deregulation on power. The telecoms were free to build up capacity. Supply and demand meant the prices dropped. The power companies are stopped from building...
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    I was wondering what electric rates others were...

    I was wondering what electric rates others were paying around the country....Once again, rates have gone up here in Texas (Dallas area).....now, for me, its .116 per kWh (not counting taxes or the...
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    The motor or compressor will draw more current...

    The motor or compressor will draw more current than it normally would, and its life will be shortened.....the higher the cap value, the worse the effect....too high (several times the desired) of a...
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    Exactly how I felt.....

    Exactly how I felt.....
  47. Replies
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    Hmmm, I didn't see the screens either, just the...

    Hmmm, I didn't see the screens either, just the frame materials. They were there last time I was in that section of my local store, but its been a while. I would just call your local Home Depot, as...
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    Is that because the screens would be blown off,...

    Is that because the screens would be blown off, and the film not? Or the film offers some broken glass shard protection? As cem-base pointed out, that's about it!!!!

    We get some pretty good...
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    That's exactly what I did.....saved over 50% by...

    That's exactly what I did.....saved over 50% by making them myself via Home Depot.....worth every penny!!! I don't understand why someone would chose tint over the screens?? Any opinions??
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    Have you looked into solar screens??? Much...

    Have you looked into solar screens??? Much better solution, IMO....
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