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  1. Try the other links in my signature for...

    Try the other links in my signature for contentious contractors.
  2. Thread: First tankless

    by kdean1
    Replies
    9
    Views
    340

    Thanks for the reply. I could not see the flush...

    Thanks for the reply. I could not see the flush valves in the picture.
    Very nice work on your part.
  3. Try sliding a bare hack saw blade around the...

    Try sliding a bare hack saw blade around the outside of the metal. When you encounter something, cut it. Heads of nails or screws may be buried in the duct liner.
  4. Try folding the metal flaps down. The screws may...

    Try folding the metal flaps down. The screws may be behind them.
  5. Thread: First tankless

    by kdean1
    Replies
    9
    Views
    340

    It looks clean. But, I don’t see tees and...

    It looks clean. But, I don’t see tees and fittings for flushing. They’ll be needed in the future.
    Good for you for doing a combustion analysis.
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    384

    I’m sorry for your loss.

    I’m sorry for your loss.
  7. Replies
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    284

    Nest is a ticking time bomb. Another name is a...

    Nest is a ticking time bomb. Another name is a shiny turd.
  8. Replies
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    178

    I’m not familiar with the term reverse staging so...

    I’m not familiar with the term reverse staging so I looked it up. Apparently it’s just staging down as the load is reduced. For a two-stage furnace, I suggest letting it finish on high heat.
  9. Replies
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    Low fire is for comfort, not for efficiency....

    Low fire is for comfort, not for efficiency. Here's a saying from the author of the combustion analysis training offered by the National Comfort Instituted - "Furnaces should be set for high fire and...
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    Honeywell (Resideo) has pretty good customer...

    Honeywell (Resideo) has pretty good customer support online and via phone.
  11. Replies
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    178

    1. I suggest 1° or 1.5° for staging. 2. When the...

    1. I suggest 1° or 1.5° for staging.
    2. When the temperature drops the above amount from the set point, it proceeds to the next stage.
    3. As far as savings, low fire is usually less efficient than...
  12. Replies
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    280

    Mold needs food and moisture to grow. To begin...

    Mold needs food and moisture to grow. To begin with, find the source of the moisture and eliminate it.
    What is humidity in your house? In what region do you live? Dehumidifiers are often a good...
  13. Replies
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    280

    Residential UV lights are snake oil. UV rays need...

    Residential UV lights are snake oil. UV rays need proximity and residence time to have an effect. Neither one is present on a residential application. This isn't like a sterilizer for medical...
  14. I listened to an episode of HVAC School with...

    I listened to an episode of HVAC School with Brian Orr that discussed a product to reduce inrush current on systems powered by generators. The title is Hard Start vs. Easy Start. Aug. 25 is the date...
  15. Coefficient of Performance (COP) is a comparison...

    Coefficient of Performance (COP) is a comparison of heat pumps to electric heat.
    https://airconditionerlab.com/coefficient-of-performance/

    Modulating heat pumps outperform electric heat at...
  16. I fail to see how always blowing room temperature...

    I fail to see how always blowing room temperature air through the ductwork will fix the problem. Or how it will heat the house for that matter.
    It is entirely possible that your furnace is bigger...
  17. Thread: Poultry brine

    by kdean1
    Replies
    22
    Views
    807

    My first brining of chicken wings was terrific....

    My first brining of chicken wings was terrific. In the brine for two hours. Baked them first then put them in the grille to make them crisp. They were as good as the best ones from a restaurant.
    ...
  18. Thread: line set damage

    by kdean1
    Replies
    11
    Views
    325

    Your post is in the forum for homeowners. We...

    Your post is in the forum for homeowners. We can’t give installation advice here.
  19. Thread: line set damage

    by kdean1
    Replies
    11
    Views
    325

    That’s a common problem. Why isn’t the contractor...

    That’s a common problem. Why isn’t the contractor dealing with it?
  20. Replies
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    435

    There’s something wrong. The video didn’t...

    There’s something wrong.

    The video didn’t reveal anything, though the sound clearly is that of a furnace not cycling correctly.

    How did you choose the contractor?
  21. Replies
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    413

    We see that often. Too many customers think...

    We see that often. Too many customers think they're being overcharged if we recommend duct design.
    There's a lot wrong with that installation. For one thing, I hate seeing a 20" tall filter...
  22. Replies
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    335

    I think of PTAC as the type of unit found in...

    I think of PTAC as the type of unit found in motels.
    https://www.sylvane.com/blog/wp-content/uploads/2019/09/friedrich-PDH07K3SG-what-are-ptacs.jpg
    Have you investigated high performance...
  23. Replies
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    380

    As in "where is your house?" Florida, Minnesota,...

    As in "where is your house?" Florida, Minnesota, or Saudi Arabia?
  24. ::DD:

    ::DD:
  25. Replies
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    489

    Wet insulation becomes a conductor rather than an...

    Wet insulation becomes a conductor rather than an insulator. If it is flexible duct, just replace it. If it is duct wrap, replace that.
    Be sure to have a load calculation performed before you have...
  26. Thread: Pump down

    by kdean1
    Replies
    32
    Views
    885

    R410-A is not Freon.

    R410-A is not Freon.
  27. Replies
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    212

    Yes. Some of us look at all new posts. It is a...

    Yes. Some of us look at all new posts. It is a waste of time to resurrect a long dormant thread.

    Do us a favor, start a new thread and reference an old one within the new one ONLY if they are...
  28. Replies
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    489

    Only if your crawlspace has a dehumidifier in it.

    Only if your crawlspace has a dehumidifier in it.
  29. Thread: Damper Balance

    by kdean1
    Replies
    12
    Views
    515

    That’s pretty good. I looked back but did not...

    That’s pretty good. I looked back but did not find what static pressure was before the adjustments. The number is good enough that if you make the rooms comfortable you can be satisfied.
  30. Replies
    11
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    370

    I charge more for comparable equipment because it...

    I charge more for comparable equipment because it takes me longer to do a thorough job.
    Ask the contractors what measurements they take after starting the equipment. The list should be...
  31. Replies
    11
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    370

    They're both fine. I think the BEST choice is a...

    They're both fine. I think the BEST choice is a modulating, inverter heat pump. Most manufacturers make them. Proper installation is critical because each home and heating system is unique.

    All...
  32. I can call all of our distributors and get...

    I can call all of our distributors and get compressor information by providing the unit model and serial number. The manufacturer KNOWS what they put in the unit.
  33. Replies
    11
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    370

    Getting even temperatures for 3 different levels...

    Getting even temperatures for 3 different levels is probably not realistic. The upper level has a hot attic above it and the basement is largely earth sheltered with very low heat gain.
    If someone...
  34. The code is etched on the missing pin. Like in a...

    The code is etched on the missing pin. Like in a spy movie!
  35. Is that from Animal House?

    Is that from Animal House?
  36. Replies
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    1,244

    It's all about knowing where to install the test...

    It's all about knowing where to install the test ports. :grin2:
  37. Yet you know the model and capacity of the unit,...

    Yet you know the model and capacity of the unit, and presumably the serial number which gives the date of manufacture.
  38. Replies
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    533

    It would be nice to know why you no longer trust...

    It would be nice to know why you no longer trust AC techs. What bad experience did you have? Not all technicians have the same level of experience. Or integrity.
    It's hard for us to know everything...
  39. There's no code involved. Compressors are...

    There's no code involved. Compressors are identified by model and serial number.
  40. Did your professional make a call to A.S. tech...

    Did your professional make a call to A.S. tech support for confirmation of his guess? Then a decision could be made based on something other than a hunch.
  41. Replies
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    1,244

    That return drop is wwwaaayyyy too small for 5...

    That return drop is wwwaaayyyy too small for 5 tons!
  42. That’s a good place to start. It’s a process. See...

    That’s a good place to start. It’s a process. See how conditions are after foaming it and give us progress report.
  43. Replies
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    1,535

    Check the links in my sig for experts.

    Check the links in my sig for experts.
  44. Replies
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    364

    Site rules prohibit giving advice for DIY. Call...

    Site rules prohibit giving advice for DIY.
    Call a technician.
  45. Replies
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    1,535

    I agree with your conclusion. I suspect you’re...

    I agree with your conclusion. I suspect you’re only getting two stages.
    You’ll need to have a matching, modulating blower to provide the right air flow.
    I doubt that your furnace can provide the...
  46. Republican National Committee?

    Republican National Committee?
  47. Wow. They could have isolated the indoor coil,...

    Wow. They could have isolated the indoor coil, lineset, and the condenser to localize the leak. They don't seem to be very good at diagnosis.

    At the very least, all the equipment should be...
  48. Thread: Damper Balance

    by kdean1
    Replies
    12
    Views
    515

    For the most part, yes. If you have a central...

    For the most part, yes. If you have a central return, interior doors must be open.

    But another thing to be considered is whether supply and return ducts to individual rooms are balanced. If a room...
  49. Thread: Damper Balance

    by kdean1
    Replies
    12
    Views
    515

    That's your best bet. Additionally, make sure...

    That's your best bet.

    Additionally, make sure continuous fan speed is the same as heat or cool speed. Some units allow for setting a lower continuous fan speed for mixing the air without it being...
  50. Replies
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    1,868

    That's what I was going to ask after reading all...

    That's what I was going to ask after reading all the way through the thread. As I understand it, electric reheat is less expensive than the cost of a dehum and doesn't add another piece of...
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