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  1. I have access to the ends of the ducts for the...

    I have access to the ends of the ducts for the 2nd floor but not all the ductwork, as it runs through a separate attic area that's difficult to access.
  2. Replace two AC systems wtih one dual zone system in Houston?

    We have a 1960s split-level house in Houston, TX. 700 sq ft upstairs, 2600 sq ft downstairs. We use the AC almost all year, and the heat very infrequently. We don't go upstairs unless there's company...
  3. The noise was eliminated by installing a u-trap....

    The noise was eliminated by installing a u-trap. Thanks all.
  4. You are correct. Is it more energy efficient to...

    You are correct. Is it more energy efficient to have the tech replace the insulation on the hard pipe or replace the entire section with flex duct?
  5. Yes my noise is very similar to yours, although...

    Yes my noise is very similar to yours, although not as rapid as yours, on average 3 seconds apart.
  6. Thanks I am just looking for something to tell...

    Thanks I am just looking for something to tell the tech so he doesn't waste a lot of time in case the noise is not occurring when he comes out.

    Sewer gas not an issue with the AC - if gas were...
  7. Loud gurgling or knocking noise coming from drain pipe after AC has been running

    We recently bought a 1960's house in Houston, TX. 2 stories, the 2nd story is half bedrooms and half attic. The main air handler and furnace is in the attic. After the AC has been running a while, a...
  8. I'm still not sure about what to do. I found...

    I'm still not sure about what to do.

    I found out the 5 ton lenox coil is not 15 years old, it was replaced, not sure when but it is at least 5 years old, although it appears to be in good...
  9. Ok to convert existing coil from R22 to R410?

    I live in Dallas and depend on my AC. Our house was built in 1996 and we have a 15 year old 4 ton York compressor that is starting to die. It's hooked up to a 5 ton Lenox coil that is substantially...
  10. Got another quote for a 14 SEER r410 new...

    Got another quote for a 14 SEER r410 new coil/condenser which is more reasonable, $ more than just getting a new R22 condenser.
  11. The first quote I got was much higher to replace...

    The first quote I got was much higher to replace both the outside unit and the coil versus just replacing the outside unit, so that's the direction I'm leaning in now. I can't see the point in...
  12. I checked inside and the fan motor wasn't loose,...

    I checked inside and the fan motor wasn't loose, the fan blades were tight on the motor post, and there was plenty of clearance between the fan blades and everything else inside. I'm still thinking...
  13. Yes the top fan was turning at full speed. Other...

    Yes the top fan was turning at full speed. Other than this noise, the AC seems to be cooling the same as usual. Maybe it is just the fan and not the compressor?
  14. Is this problem noise the compressor or the fan (video)?

    My outside unit has been intermittently making a really loud squealing/squeaking noise - it wouldn't do it while the tech was out but I just caught it on video. Can anyone tell if it is just the fan...
  15. Replace R22 outside unit, or upgrade to R410?

    I have a 2000 sq ft house (14 ft ceilings throughout) in Dallas, TX with a 4 ton York unit outside and the air handler/furnace in the attic. Highs are regularly +105 here in the summer. The house and...
  16. What part do you mean by "intake vent"? My...

    What part do you mean by "intake vent"? My compressor pulls air in over all the coils on the 4 sides and vents it out through the fan in the top. Maybe I need to put some weather stripping where the...
  17. Not really, I think tightening the screws helped...

    Not really, I think tightening the screws helped some but the noise is still mostly there.
  18. Fan or compressor making oscillating humming noise

    We have a 4 ton York heat pump outside our bedroom. Since it has started warming up, the AC has been running and there is some noise coming into the house. The noise is sort of a humming, but the...
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    It's hot in Dallas, but it was hot last year too....

    It's hot in Dallas, but it was hot last year too. For example, July 2009 usage was 1643 kwh with an average temp of 87 and CDD of 652. This compares to 1628 kwh July 2008 when the avg temp was 89 and...
  20. Replies
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    Am I crazy to rip out radiant barrier?

    Electric bills in Dallas last summer just about killed me. Single story 2000 sq ft house with a high pitch roof. Attic (where the air handler is) was getting up to +130 degrees on 100 degree days. So...
  21. Recommend someone to install attic vents in Dallas?

    Can anyone recommend someone in Dallas to install a few extra roof vents at the top of the roofline? Any general idea on how much $ it should cost? We have three 9" vents and I'd like to double that....
  22. Should I even consider an early AC replacement?

    I have a 2000 sq ft house in Dallas with 11 ft ceilings. Built in the mid 1990s and the outdoor condenser is the original York 4 ton 10 SEER unit. Indoor evaporator coil was replaced in early 2000s...
  23. Replies
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    For what it's worth, here is my experience with...

    For what it's worth, here is my experience with the radiant barrier foil, stapled to the rafters. The house in question is a single story 2000 sq ft ranch style home with a pitched roof in Dallas/Ft....
  24. At R-11 to R-19, it sounds like you might benefit...

    At R-11 to R-19, it sounds like you might benefit from adding some more insulation on the attic floor before you tackle the ducts. The department of energy recommends R-30 for the attic in our area.
  25. TM, you sound like me - I'm in DFW, stung by...

    TM, you sound like me - I'm in DFW, stung by ridiculous electricity bills (0.205/KWH last month). I installed 2000 sq ft of radiant barrier myself (that was brutal), replaced recessed light fixtures...
  26. Replies
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    I'm no pro, but everything I've ever read says...

    I'm no pro, but everything I've ever read says fans should rotate counter-clockwise in the summer and clockwise in the winter.
  27. Replies
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    Higher ceilings: more or less A/C usage?

    We have 11 ft ceilings in our 1 story house in Dallas (current temp: 105). My friend says that higher ceilings result in less A/C usage during the summer compared to 8 ft ceilings (assuming that...
  28. Oh, I don't know if this affects the...

    Oh, I don't know if this affects the recommendations but we have 12 ft ceilings in most of the house, so even more air mass to cool.
  29. Don't even get me started on the electric rates...

    Don't even get me started on the electric rates here. We were month-to-month and watched our rate go from 10cents/kwh to 12, to 15, to 18, and then to 20.5. When I saw the 20.5 coming I decided to...
  30. Most energy efficient setback point for house in Dallas?

    We have a 1 story 2000 sq. ft. ranch-style house in Dallas with a 3 ton A/C that I beleive is about 12 years old. I would appreciate your advice on the best setpoints for the programmable thermostat...
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    I'm all for starting the A/C early to get down to...

    I'm all for starting the A/C early to get down to the right temperature at the right time, but if I'm going to bed at 10 I'd rather have the A/C come on at 9, not 7 as the "adaptive recovery" was...
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    You remember that movie, 2001: a space odssey?...

    You remember that movie, 2001: a space odssey? Where the computer goes crazy and kills everyone except for one dude, who then takes out the computer before it can do him in? That's my point.
    ...
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    Right, I understand what it's trying to do - and...

    Right, I understand what it's trying to do - and if electricity were free, it'd probably be convenient. Instead its just wasteful.
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    My thermostat thinks its smarter than me?

    I'm a relatively new homeowner. In the past, when I programmed the thermostat to a particular temperature at a time, the A/C would come on at that time if the current temp was above the programmed...
  35. 3 sq. ft. of ventiliation for 2000 sq. ft. attic?

    I'm a homeowner in Dallas with a 2000 sq. ft. single story ranch style home built in 1993. The A/C electricity bills are killing me. The air handler and A/C ducts are all in the attic, which I've...
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