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  1. Replies
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    Please don't use the phrase "HVAC professional"...

    Please don't use the phrase "HVAC professional" again when describing the person responsible for that mess. Your idea of a "HVAC professional" is obviously different than ours, and you calling him...
  2. Thread: HVAC leak

    by ammoniadog
    Replies
    11
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    234

    Does this company have any different, better...

    Does this company have any different, better techs that they can send over?

    If it were me, I would want them to send someone who knows what they're doing, have them fix the leak and pressurize the...
  3. Thread: HVAC leak

    by ammoniadog
    Replies
    11
    Views
    234

    That's effed up, man. Your hvac guy does seam...

    That's effed up, man. Your hvac guy does seam like a real piece of work.

    It sounds like you nailed the leak down to the indoor section. Either you got a bad A-Coil or this guy didn't braze his...
  4. I agree with Bazooka. About the best you're...

    I agree with Bazooka. About the best you're going to do is to get some kind of foam weatherstripping tape and make a square with it around the louvers underneath that filter, then slap that filter...
  5. Replies
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    The low return temperature is because the...

    The low return temperature is because the basement is too cold. That's why you need to close the basement SUPPLIES. This will force some of the warmer air from upstairs to get sucked down the...
  6. Replies
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    536

    I think you'd want it to pull cold air from the...

    I think you'd want it to pull cold air from the basement, and then shoot it upstairs where it's too warm. Also, if you had the basement supplies closed then the basement returns would actually be...
  7. Replies
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    536

    Can you adjust supply dampers? I would recommend...

    Can you adjust supply dampers? I would recommend opening up all of the returns again (except for any that might be in your mechanical room, because there aren't supposed to be any there in the first...
  8. Replies
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    2sac's logic makes about as much sense as...

    2sac's logic makes about as much sense as anyone's at this point.
  9. Replies
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    207

    Yeah, I cringed a little bit at the "chilled...

    Yeah, I cringed a little bit at the "chilled refrigerant" part too, but overall that's just a tiny nit-pik.

    It's a very good demonstration of how an A/C system works, and a very nice animation,...
  10. Thread: Capacitor

    by ammoniadog
    Replies
    6
    Views
    337

    If you can find one that's made in the USA...

    If you can find one that's made in the USA (Example most Amrads, some Packards), that would be best. Also, if you can go up on the voltage rating (440v instead of 370V) that is usually a good thing...
  11. How is that easier, when it appears that the...

    How is that easier, when it appears that the thing is already piped up? I think all he would have to do is shoot a couple of sheetrock screws into the window frame to prevent it from opening. I...
  12. The main purpose of the insulation is so that...

    The main purpose of the insulation is so that dripping condensate does not wreck things or cause mold to grow inside of your house. "Holding in the cold" is a very distant 2nd place function.

    The...
  13. Replies
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    335

    Would it be possible to extend the return to go...

    Would it be possible to extend the return to go to that far room, as well as making the supply run bigger and better? I would think running a return to that room might go a long way towards helping...
  14. Did you put the correct amount of change into it?...

    Did you put the correct amount of change into it? New ones take dollar bills and credit cards, but I think some of the old ones (like the one you've got) only took actual metal coins.

    If that...
  15. Wow. Those little Carrier condensing units that...

    Wow. Those little Carrier condensing units that sit on top of the Captive Arie's have the little control board that prevents them from running if the phases are backwards. Someone probably didn't...
  16. You probably know more about 2 phase power than I...

    You probably know more about 2 phase power than I do. I've never seen it. From what I understand, it is VERY rare. I think PHM talked about having to deal with it several years ago at some place...
  17. No, a neutral is not needed for 240v single...

    No, a neutral is not needed for 240v single phase. The neutral is ONLY needed for 120V or 277V (that isn't being provided by a step down transformer).

    Yes, there are lots of 3 phase rooftop units...
  18. Replies
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    I would certainly think that a little bit of oil...

    I would certainly think that a little bit of oil left in the lineset would be better for the system than a bunch of solvent/degreaser in there would be. Please don't shoot a bunch of cleaner into...
  19. Not exactly. A 3 phase piece of equipment does...

    Not exactly. A 3 phase piece of equipment does not usually need or have a neutral. If it is 240V 3 phase that you're dealing with, you will have 2 legs that are 120V to ground and one leg that is...
  20. Replies
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    2,933

    I've been to one service call to a Little...

    I've been to one service call to a Little Caesars. Make up air unit blowing in cold air in the middle of winter.

    Got up to roof and found out they didn't have a make up air unit. They just had a...
  21. Yeah, it's much better to trip over all of the...

    Yeah, it's much better to trip over all of the stupid pvc pipes that run everywhere.

    :cheers:
  22. Yes, it is unnecessary. I would bet the roofing...

    Yes, it is unnecessary. I would bet the roofing companies have something to do with telling the owners that their roof warranty would be void if they weren't piped to a drain.

    One thing that I...
  23. You are most likely correct about the wire size,...

    You are most likely correct about the wire size, but I'm pretty sure a 3 phase unit should use the same amount of power as a comparable single phase unit, so either way the wheels inside of the...
  24. Replies
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    252

    What if the indoor units don't even have a...

    What if the indoor units don't even have a metering device, like how I was picturing? I thought we were talking about mini-splits here, which I don't claim to be an expert of, but I thought that...
  25. Replies
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    252

    I've never done it or even heard of R32, but I...

    I've never done it or even heard of R32, but I just did some quick research. R32 looks like it runs slightly higher pressure than R410A, but it is very similar. I would guess that the refrigerant...
  26. Replies
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    These are pretty basic questions you are asking....

    These are pretty basic questions you are asking.

    No, you don't need to stick with rotolocks. I hate rotolocks and get rid of them any chance I get. I never understood what the point of them was,...
  27. https://youtu.be/cf4C9ssuPjE

    https://youtu.be/cf4C9ssuPjE
  28. A 3 phase compressor is a little more heavy-duty,...

    A 3 phase compressor is a little more heavy-duty, and could possibly last a little longer. Also, since you have 3 phase service, you might as well make use of it. That last bit of logic might or...
  29. Replies
    3
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    283

    The unit didn't happen to be in heating mode at...

    The unit didn't happen to be in heating mode at the time, did it? Most units have a fan off delay built into the control board that would keep the fan running for a while after a call for heat. I'm...
  30. Replies
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    I just looked at the diagrams for the 2 most...

    I just looked at the diagrams for the 2 most common smoke detectors that I deal with and realized that my hand drawn doodle above is only accurate for the "Air Products & Controls" brand.

    It...
  31. Replies
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    I made this drawing recently for a coworker who...

    I made this drawing recently for a coworker who couldn't figure it out. This is how I like to wire them up. On my drawing, the "RTU Control Board" that I drew is from a Carrier. They have some...
  32. ^^^ This is what my original GE furnace used to...

    ^^^ This is what my original GE furnace used to do. It had one of those Honeywell fan/limit controls with the round dial that would spin around as it heated up. When it got to the first notch it...
  33. Replies
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    My local United Refrigerations will sell it by...

    My local United Refrigerations will sell it by the foot. The counter guy told me to keep it a secret since it messes with their inventory counts when they do it, but corporate told them they had to....
  34. If it does, it aint right.

    If it does, it aint right.
  35. OK wait, hold on a second. The blower is...

    OK wait, hold on a second. The blower is controlled by the green wire connected to G at the thermostat. Then at the furnace this green wire is wire-nutted to a black wire, and then there is a white...
  36. https://hvac-talk.com/vbb/attachment.php?attachmen...

    https://hvac-talk.com/vbb/attachment.php?attachmentid=811033&stc=1&d=1567115353
  37. Replies
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    By the way, Aitch Vak Rook, welcome to our site! ...

    By the way, Aitch Vak Rook, welcome to our site! What does your user name mean? I can't figure out how to pronounce it. Are you from a different country other than the USA?

    Are you currently...
  38. Replies
    13
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    1,068

    They definitely are not a waste if you're...

    They definitely are not a waste if you're crawling around in an attic all day filled with fiberglass or blown in insulation, or if you are boring a hole through a thick concrete wall or drilling a...
  39. Replies
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    286

    Since I know how to braze I'd probably say no. ...

    Since I know how to braze I'd probably say no. For most situations I don't see a big advantage of the zoomlock fittings, since brazing doesn't take that much longer and there doesn't seem to be any...
  40. Replies
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    293

    To help with the problem of the cold/hot air and...

    To help with the problem of the cold/hot air and dirt coming through the combustion air duct, here are 2 suggestions that might help. The idea is to make a "cold air trap" by bending a U at the...
  41. Replies
    8
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    293

    You may not be required to have the combustion...

    You may not be required to have the combustion air, but it's still a good idea. Things such as bathroom and cooking exhausts and clothes dryers will pull your house into a slight vacuum when they...
  42. Replies
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    I also downsized my bag due to a messed up back. ...

    I also downsized my bag due to a messed up back. Now when I first walk in to a service call I usually will only bring in my multi-meter pouch. This has my multi-meter, a couple of alligator clip...
  43. Replies
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    246

    As long as the cigarette filter is also made out...

    As long as the cigarette filter is also made out of N95 material, I don't see what the issue is. :whistle:
  44. Replies
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    310

    Interesting, I didn't know they still made...

    Interesting, I didn't know they still made anything in the USA. Does anyone know what they made? I'm guessing large tonnage stuff?
  45. Replies
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    496

    Speaking of Paul Harvey, have you heard of the...

    Speaking of Paul Harvey, have you heard of the miracle electric space heaters that he and the Amish people invented? They claim that they are 100% efficient. :whistle:
  46. You have gotten some good replies so far. I'd...

    You have gotten some good replies so far. I'd like to add that with most hanging heaters (I'm assuming gas fired unit heaters?) there really isn't much point to doing much to them as far as...
  47. Replies
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    1,134

    Nice work AP. Very clean looking work for such a...

    Nice work AP. Very clean looking work for such a dirty place. I'd like to see a picture of what you looked like after crawling out of there.

    :cheers:
  48. Since your ductwork is still going to be in the...

    Since your ductwork is still going to be in the attic, I wouldn't think it would make any difference at all as far as efficiency goes. It doesn't make any sense to route the ductwork to the garage...
  49. Replies
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    1,115

    Type K sucks, get yourself a Cooper setup in the...

    Type K sucks, get yourself a Cooper setup in the red or blue case. I did some research on this subject a long time ago and found out that most Type K meters are only accurate when the meter is at...
  50. Replies
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    334

    This is the kind you want. I stole these pics...

    This is the kind you want. I stole these pics from Home Depot's website after I typed "metal roof flashing" in the search box. You drill your hole in the roof, cut the rubber big enough for your...
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