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  1. Replies
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    Tech comes out and tells my wife's g'maw that her...

    Tech comes out and tells my wife's g'maw that her upright freezer in the bsmt needs to be replaced. She buys a new one, and it doesn't keep anything frozen either. The appliance co. replaced the...
  2. Replies
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    Complaint: Not cool enough on second floor in...

    Complaint: Not cool enough on second floor in very expensive, 15 y/o 2-story home with 2 furnaces & AC systems - both furnaces in the basement.
    Diagnosis: No ductwork ever run from basement furnace...
  3. Replies
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    4,008

    No cooling call from an existing commercial...

    No cooling call from an existing commercial customer who'd just moved their business to a new location where they had purchased an existing building.

    Diagnosis: No AC system installed - just a...
  4. Thread: Used furnaces

    by midhvac
    Replies
    72
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    3,512

    I've installed a few used AC systems that I had...

    I've installed a few used AC systems that I had personally removed and knew the history and condition of. But I've never installed a used furnace. I can, however see certain cases where I might...
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    I noticed a few years ago that some of the newer...

    I noticed a few years ago that some of the newer furnaces had begun to use PSC motors that had a much greater difference in CFM from one speed to the next. I'm guessing that they did that to reduce...
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    1,394

    Poll: 180/90 on the highest dosage available. Not much...

    180/90 on the highest dosage available. Not much overweight. On a really hot day the dose is too high and the BP gets really low, messing me up.
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    All laws are subject to change. Kansas has a law...

    All laws are subject to change. Kansas has a law that states that you can't hang a man with a wooden leg.
  8. Replies
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    Those are some funny pics. I'd like to say I...

    Those are some funny pics. I'd like to say I hadn't seen worse Goodman installs - but I saw a Goodman condensing furnace with the PVC exhaust taped up into the existing common metal flue for the...
  9. Replies
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    1,034

    I picked up a package of it at Lennox a few years...

    I picked up a package of it at Lennox a few years ago. It's that square, red tubing. But it wasn't a roll, but a bunch of pre-cut pieces that are too short for most other furnace brands.
    And,...
  10. Replies
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    665

    styrofoam as refrigerator load?

    Got an old Kenmore combination refrigerator/freezer out in my garage. It's the traditional type with the freezer on the top and the much bigger fridge on the bottom - auto defrost.
    We never use...
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    I'm getting smarter every day

    Today I was able to correctly predict that it would take me a very long time to clean a filthy condenser after I was able to screw my hose nozzle on the hose with the hose hydrant wide open. ...
  12. Replies
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    1,687

    There are 2 pressure drops to be concerned with. ...

    There are 2 pressure drops to be concerned with. The initial one and the dirty one. There's a big range of initial pressure drops in 16 x 25, 4" filters - of the same MERV rating. That difference...
  13. I doubt it. They'd know that concrete has a poor...

    I doubt it. They'd know that concrete has a poor R-value.
  14. Replies
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    983

    The outlawed 80% furnace thing in the "northern...

    The outlawed 80% furnace thing in the "northern regions" was unsuccessfully fought by the ACCA on our behalf. The group for it included the environmentalists & furnace manufacturers. Strange...
  15. Replies
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    17,547

    And if it rubs a hole in the pipe when the unit...

    And if it rubs a hole in the pipe when the unit vibrates, it would be gas cooled - for a while.

    But if you flatten out the pipe, you'd get more heat transfer, and it wouldn't rub through it as...
  16. Replies
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    17,547

    Or to keep the heat out of the electrical panel...

    Or to keep the heat out of the electrical panel to start with. The units that catch a good amount of sun seem to be the worst offenders. Some of those that have been off all day have caps that are...
  17. Replies
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    17,547

    Here's a link to a technical article about the...

    Here's a link to a technical article about the effect of high ambient on the life of electrolytic caps. It's primarily about DC voltage, but might also apply to AC.
    ...
  18. Replies
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    17,547

    I think we're getting closer to the source of the...

    I think we're getting closer to the source of the problem - a combination of conditions - heat and higher voltages. Caps are rated for voltage. The higher the voltage rating of the cap, the more...
  19. Replies
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    17,547

    The caps are in the path of the air before it...

    The caps are in the path of the air before it goes through the condenser.
    I service several 8-plexes with those, and service a lot more because I installed that brand for several years. Haven't had...
  20. Replies
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    2,403

    Show em the picture and tell em it's a waste of a...

    Show em the picture and tell em it's a waste of a short man's value - save the short folks for crawl spaces. :D
  21. Replies
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    17,547

    Just hit me that during this heat wave, I've seen...

    Just hit me that during this heat wave, I've seen no failures of capacitors that are mounted through holes in the bottom of the electrical compartment, like on the Rheem & some other units i.e. the...
  22. Replies
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    17,547

    Same problem here. I really think the heat is...

    Same problem here. I really think the heat is the main culprit. I'm about ready to put the capacitor inside the house and run wires outside. :grin2:

    I agree that the Chinese ones seem to get...
  23. Replies
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    4,490

    Manufacturers began to realize a while back that...

    Manufacturers began to realize a while back that ECM motors are no substitute for adequate ductwork when they got nailed with lots of warranty replacement ECM motors.
    And many customers didn't...
  24. Replies
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    2,796

    I've seen several cases where the installer took...

    I've seen several cases where the installer took the transformer out of the old AC and put it in the new one they installed. So LOL, the 5 wire system lives on to challenge the next generation of...
  25. Replies
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    2,796

    Saw one of those about 25-30 years ago with the...

    Saw one of those about 25-30 years ago with the old Sears stat that had little diagnostic indicator lights in the stat that were powered by sensor circuits in the o/s Sears unit. It didn't when I...
  26. Replies
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    2,385

    The last time I saw that on a residential...

    The last time I saw that on a residential furnace, the heat exchangers were gone when the furnace was 7 years old. Amazingly, the guy who installed it was actually a Lennox dealer who I knew. It was...
  27. Replies
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    2,859

    It will always use less kWh per season by setting...

    It will always use less kWh per season by setting it back. How much less depends on numerous variables. But if the electric co. is charging you more per kWh at "peak" hours of the day, that must be...
  28. Replies
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    2,385

    That's truly a "condensing furnace", and is about...

    That's truly a "condensing furnace", and is about to become 90% efficient - at gassing people. Good fodder for the Wall of Shame forum.
  29. Replies
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    2,859

    LOL, that's a huge part of the variables involved...

    LOL, that's a huge part of the variables involved here. I have some customers that are willing to make that sacrifice in comfort to save x $ over the course of an entire cooling season. But those...
  30. Replies
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    2,859

    And with most programmable stats, there's the...

    And with most programmable stats, there's the variable of whether or not you have the stat set to "automatically recover" from the setback, i.e. the "energy management" algorithm, where the stat...
  31. Replies
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    I've grown to hate the hard wired stats when I'm...

    I've grown to hate the hard wired stats when I'm doing maint. But they do provide a fair level of protection.
    A delay in the outside unit has more protection, i.e. it will also protect the...
  32. Replies
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    2,859

    As far as AC setbacks go, there's no general...

    As far as AC setbacks go, there's no general answer to that, because the number of variables is mind boggling. The ones mentioned in this thread are just the tip of the iceberg. You have to pick a...
  33. Replies
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    TIF 8800 question`

    Went to charge my TIF 8800 and don't know which of the huge pile of chargers (if any of them) is for it. If any of you have an old TIF 8800 (nothing after the 8800, i.e. the old model without the...
  34. Thread: Don Cornelius

    by midhvac
    Replies
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    854

    Used to watch that show a lot. R.I.P. Don.

    Used to watch that show a lot. R.I.P. Don.
  35. Replies
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    That's KIA. And they have more room now - those...

    That's KIA. And they have more room now - those are rats in the commercials.
  36. Replies
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    3,257

    I've seen people get away with running hot water...

    I've seen people get away with running hot water to refrigerator icemakers for years. It just depends on how long that water line is, and what the temp surrounding the line is, and how much hot...
  37. Replies
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    1,722

    Being old school, I'll probably buy one and put...

    Being old school, I'll probably buy one and put lake pipes on it, and take it down to the drag strip. Seems amazing that they can get 16 City & 25 Hwy, and have 429 HP with all that emissions...
  38. Replies
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    3,257

    Do a search for Mpemba. I think that was the...

    Do a search for Mpemba. I think that was the African guy's name who researched that phenomena of hot water freezing faster than cold water. But it only happens under certain controlled conditions...
  39. Thread: HVAC vs DOE

    by midhvac
    Replies
    17
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    1,422

    We're in the DOE's "Northern Region" here. I see...

    We're in the DOE's "Northern Region" here. I see some problems with the changes implemented by the Final Rule, as it means that you won't be able to replace a non-condensing furnace with another...
  40. Replies
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    2,774

    I had one of those Kill-A-Watt meters, and...

    I had one of those Kill-A-Watt meters, and started checking all the little things around the house, and geez it really adds up - even all those little power supplies.

    A year ago, the local...
  41. Thread: HVAC vs DOE

    by midhvac
    Replies
    17
    Views
    1,422

    They're not the only ones hot under the collar. ...

    They're not the only ones hot under the collar. The ACCA spoke out against the final rule as well, and stated that the manufacturers and energy conservation people who were pushing it to be fast...
  42. Replies
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    1,228

    ZW17: Thanks for the link!

    ZW17: Thanks for the link!
  43. Replies
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    2,547

    That's for sure. Didn't tell the whole story -...

    That's for sure. Didn't tell the whole story - about what happened after that. I asked Verizon if I could activate my wife's old LG ENV3 (a very low tech phone, but with a little better reception...
  44. Replies
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    1,228

    Draft inducer gaskets??

    What are they made out of? This is like some top secret thing. Can't find find that info anywhere.
    Have any of you ever found that material for sale in sheet form?
  45. Replies
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    2,547

    I bought a used Blackberry Curve (from an...

    I bought a used Blackberry Curve (from an individual - not from Verizon), to allow me to use my spreadsheets and Word files in the field, then bought the Office Suite software for it, and installed...
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    2,547

    99 cents a month is nothing compared to what they...

    99 cents a month is nothing compared to what they are allowed to get away with for demanding that folks buy a $20-$30 per month data plan when those phones will be limited to voice calls only, i.e....
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    The exact same thing happened to one of my...

    The exact same thing happened to one of my customers in the same spot on her leg. A few months after it happened, she had on shorts when I was there, and showed me the scar, and it was ghastly...
  48. Replies
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    That's exactly what I said. They're sooo...

    That's exactly what I said. They're sooo creative about that.

    And that part about the corporations thinking everybody has to play by their rules was undoubtedly pioneered by a utility co.,...
  49. Thread: HAPPY NEW YEAR

    by midhvac
    Replies
    11
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    588

    Happy New Year from me too, y'all. Make sure...

    Happy New Year from me too, y'all. Make sure your air bag lights come on when you start the vehicle tonight. :cheers:
  50. Replies
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    That's funny papa jo. Sometimes you wonder if...

    That's funny papa jo. Sometimes you wonder if the battery companies are designing toys now. If they are, it might not be long before you'll see battery operated fishing reels and kites.
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