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  1. I hope you're right 'cause I'm about to order it....

    I hope you're right 'cause I'm about to order it. Thanks!
  2. Adapter to Access Automotive Refrigerant?

    I rarely do medium temp, so I don't wish to buy a 30 pound tank of 134A. The 12 ounce can at Autozone is perfect for the little refrigerator I'm working on. The automotive hose they sell is not...
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    Daniel is on point. I don't think it's worth the...

    Daniel is on point. I don't think it's worth the extra investment unless you are going to be there for quite some time. I'm speaking strictly in terms of ROI. Intangibles such as environmental...
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  5. There is a decent chance the system is oversized...

    There is a decent chance the system is oversized for the home, hence the noise. It's a little late to do anything about that.

    Generally speaking it's a bad idea to lower the fan's speed. Not only...
  6. What's the difference between Carrier's current gen replacement inducer motors?

    The kit numbers are 326628-760 through 326628-765. You can view the installation instructions here.

    In terms of physical dimensions, I think they're all the same. Perhaps the wheel is different on...
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    The ducts' sizes are not actually relevant to the...

    The ducts' sizes are not actually relevant to the pressurization issue you're dealing with. Your supply vents could each be 20 inches in diameter. They can still only supply as much air to the...
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    The supply ducts can only supply the air that the...

    The supply ducts can only supply the air that the air handler draws in. You report that your basement pressure is positive. Therefore the air handler must be drawing air from some place other than...
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    Entitled much? I spent fifteen minutes last night...

    Entitled much? I spent fifteen minutes last night looking up data on a two-stage Carrier product and posting the precise results for your viewing pleasure. That buys me dinner at the hourly rate that...
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    You're fine Limey. I'm just being conservative....

    You're fine Limey. I'm just being conservative. And yes, if the air handler has two breakers then one is probably for the heat strips only. The unit outside has its own breaker as well.
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    Rama kinda sorta said... "My surgeon is a...

    Rama kinda sorta said...

    "My surgeon is a quack who believes in bloodletting and phrenology, but my surgery is already scheduled and I'm a little tight on time. Can you please tell me how my...
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    As you know, the forum prohibits DIY questions. I...

    As you know, the forum prohibits DIY questions. I don't know how close I'm getting to that line. If you can't figure out whether your air handler has one or two breakers, it's probably best for me to...
  13. Thanks Smoke. I should be more specific. Years...

    Thanks Smoke. I should be more specific.

    Years ago I read that adaptive recovery mode determines how far in advance it cycles on (and off and on and on and off - which is why some customers...
  14. I have a quick question myself for those that may...

    I have a quick question myself for those that may know: Does the thermostat's adaptive recovery (or whatever they're calling it these days) alter the CPH during recovery? It may not be altering CPH...
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    You are correct. An air conditioner moves heat...

    You are correct. An air conditioner moves heat from inside to outside. A heat pump is an air conditioner with a reversing valve (and other stuff) that reverses the flow of refrigerant, thereby moving...
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    As suggested, a 2 stage 45K furnace locked in...

    As suggested, a 2 stage 45K furnace locked in first stage is the way to go in my opinion. The Carrier/Bryant/Tempstar/Payne/Day&Night 80% AFUE version thereof (which is actually 44K BTUH input) will...
  17. The correct thing to do is get a real diagnosis....

    The correct thing to do is get a real diagnosis. "Bad shape" doesn't mean anything. Imagine going to the doctor for knee pain and his professional diagnosis is "bad shape". You can do that by hiring...
  18. Realmsteel: What I believe has changed is the...

    Realmsteel: What I believe has changed is the pan's seal to the chassis that it sits under. The water level in the pan is normal.

    Dennis: You were working on a similar First Company air handler?
  19. Doesn't make sense: Air leak causes water to overflow ceiling AH.(pics & vid inside)

    I've never seen this before. Now I've seen it twice in a month. The video is something I did for the landlord of the first unit I saw. The pictures are from the second. Both are First Company air...
  20. Tim: Thanks very much. That's good knowledge,...

    Tim:

    Thanks very much. That's good knowledge, of which I understand partially. I doubt my meter can read a change in duty cycle. It can read frequency, so I'll check that next time.

    Anyone:
    ...
  21. Well... Now that you say that, maybe not. Thanks...

    Well... Now that you say that, maybe not. Thanks for planting uncertainty. (j/k ;))

    I'll be going back in a week or two. I'll check again. If I don't read a voltage drop I'll take a picture or...
  22. How does the ICM3XX head pressure control reduce fan speed?

    I assumed it did so by lowering the voltage. However, after installing this one I see that the input and output voltage are the same even when the condenser fan is running slow.

    The next thought...
  23. Thank you for the feedback gents.

    Thank you for the feedback gents.
  24. Thank you Sic! The point of this thread is to, if...

    Thank you Sic! The point of this thread is to, if possible, avoid compressor removal. :) Maybe it's a crazy thought, but I won't know till I try.
  25. I've performed a lot of searches on this forum...

    I've performed a lot of searches on this forum and on the net in general. It appears that, for high temp at least, R-438A is the best no oil change choice and R-407C is the best "some oil change...
  26. It's not to sample. It's to convert to from R-22...

    It's not to sample. It's to convert to from R-22 to R-407C.

    I don't know if this is widely accepted, but it's what I'm going with: The gentleman that put this class on states that we need only a...
  27. Quickest way to extract *some* oil from a compressor that's not being replaced?

    My thought is to cut the suction line and use an automotive style extractor.

    Thoughts on that idea? Better ideas?

    I think it might work well on a recip. I'm not as certain about scrolls.
  28. I realize it's not necessarily popular, but...

    I realize it's not necessarily popular, but soldering with Stay-Bright 8 will keep it a lot cooler. By the time I've finished soldering a typical joint, the liquid soap has only started to boil.
    ...
  29. deleted (Don't have the * next to my name! :))

    deleted

    (Don't have the * next to my name! :))
  30. Thread: UV Lights

    by Irascible
    Replies
    66
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    47,785

    In reply to the preceding post: Sterilizing...

    In reply to the preceding post:

    Sterilizing the coil might be needed in humid climates. It’s certainly not needed here (a dry climate) in a typical residential application. Regardless of the...
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    Min and max settings are useful, but it's the...

    Min and max settings are useful, but it's the program that I need to lockout.

    I'll read up on those suggestions and others that may come. I appreciate the help.
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    Best option for t-stat with lockout?

    I have a customer that wants to lockout the program, leaving occupants with only the ability to temporarily change the setting - a fairly common request I think.

    I liked the Totaline thermostats...
  33. Thread: UV Lights

    by Irascible
    Replies
    66
    Views
    47,785

    Let me rephrase that old post by saying that it's...

    Let me rephrase that old post by saying that it's about a fifth of a second of exposure, depending. You're not going to sterilize much of anything in a fifth of a second.
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    More details? An X SEER condenser with a recip...

    More details? An X SEER condenser with a recip and an X SEER condenser with a scroll is still X SEER. Or are we talking about some other measure?

    That's not to imply I would choose recip if I...
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    Stating the obvious here: A referral isn't fool...

    Stating the obvious here: A referral isn't fool proof, but it's 200% better than calling Joe Schmoe out of the phone book. :)
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    All the links work on my 'puter dan.

    All the links work on my 'puter dan.
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    Suhweet white paper brain overloading geek-heaven...

    Suhweet white paper brain overloading geek-heaven goodness!

    This is bookmarked for when I get some down time. Well... if I get some down time. What's down time again?

    Random thought: The...
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    I stick mostly to central Contra Costa. I've gone...

    I stick mostly to central Contra Costa. I've gone much farther, but those were unusual circumstances in which the homeowner agreed to deal with the limitations of a distant contractor. If you want a...
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    Read that over and over and over again. :) ...

    Read that over and over and over again. :)

    I've had painters to my house recently. (True story.) I spent at least 30 minutes each grilling them on how exactly they're going to prep and paint the...
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    [COLOR=black][FONT=Verdana]This. You want the...

    [COLOR=black][FONT=Verdana]This.

    You want the best contractor, period. Educate yourself about HVAC till you can't stand it. Then you'll be better prepared to figure out which contractor (if any)...
  41. Moisture removal is the product of how cold the...

    Moisture removal is the product of how cold the coil surface is, how much coil surface there is and how much airflow is going through the coil. The colder the coil, the more moisture that's removed....
  42. I imagine almost everyone is doing that. Cheating...

    I imagine almost everyone is doing that. Cheating on green tax credits is the new black. In most cases it's not moral or legal of course.
  43. Correct. Let's be real. The government ...

    Correct.

    Let's be real. The government isn't that generous. Of course it's a trick to say that the AC comprises only 17% of the total cost. That's not tax or legal advice. That's just obvious. :)
  44. You mentioned the 165A and 126B in another...

    You mentioned the 165A and 126B in another thread. I checked on the 165A and found 4 ARI matches with a 4 ton coil: 3815885, 3815886, 3493443 and 3493437. So yes, a 4 ton coil is approved depending...
  45. I appreciate the fixation on diffusers. It's a...

    I appreciate the fixation on diffusers. It's a valid suggestion, but it isn't going to happen - period. They already replaced them once. They're not going to do it again. The diffusers they currently...
  46. It's a reasonable suggestion bigtime. But I'm 99%...

    It's a reasonable suggestion bigtime. But I'm 99% certain we're going to be using a deflector like the one linked. As stated before, they spent a lot of money on high quality diffusers already...
  47. Regarding the damper, it's not a question of...

    Regarding the damper, it's not a question of volume. It's a question of direction. They want the cold air to diffuse into ambient air as much as possible before it settles to chair level, hence their...
  48. Found it on page 6:...

    Found it on page 6:
    http://www.jandjreg.com/PDF/ProductCatalog/GRD/JJSquareRoundDiffusers.pdf

    That gets us close. They already dropped some serious coin on similar diffusers. They, their clients...
  49. Alternative air deflectors for 24x24 t-bar diffusers?

    This company's product is of interest:

    http://www.comfortfirst.us/controlaflow.htm

    Know of any others? I don't need the filtering mechanism. I just need to deflect air. Hanging a piece of...
  50. ange stops + 2 hour operation + non-programmable: Is there such a thermostat?

    That is to say: range stops + 2 hour operation + non-programmable: Is there such a thermostat?

    The customer wants the following:

    non-programmable
    range stops to prevent too low or too...
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