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  1. Why is it always a Goodman?:grin2:

    Why is it always a Goodman?:grin2:
  2. Opening the compressor is dangerous. Don’t do it...

    Opening the compressor is dangerous. Don’t do it again. :grin2:
  3. Replies
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    Site rules do not allow giving advice for DIY....

    Site rules do not allow giving advice for DIY. Proper diagnosis involves testing with a meter.
  4. Thread: Air Flow

    by kdean1
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    192

    Explain “venting to the outside”. If this is a...

    Explain “venting to the outside”. If this is a gas furnace it must have a return trunk, not an open return.
    As far as a return opening, don’t overlook the gap around the door as an opening. Ideally...
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    Ask for the commissioning report. It should...

    Ask for the commissioning report. It should include refrigerant pressures, pipe temperatures, super heat, subcooling, air temperatures for return and supply, static pressure readings, and air flow.
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    Most ground rods I have handled are steel with a...

    Most ground rods I have handled are steel with a copper coating. Both metals are conductors.

    Is an HVAC company or insurance company trying to weasel out of covering a warranty claim?
  7. Not "comical", Criminal is more like it.

    Not "comical", Criminal is more like it.
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    Additionally, how well sealed is your ceiling...

    Additionally, how well sealed is your ceiling from the attic?
  9. Thread: Freon

    by kdean1
    Replies
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    283

    For clarity, Freon is a brand name for one...

    For clarity, Freon is a brand name for one manufacturer's R-22. Freon is R-22. It is not the same as R-134A
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    Water?

    Water?
  11. Replies
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    255

    That is not a running trap, it is a short P-trap....

    That is not a running trap, it is a short P-trap. It should be deeper.
    A better way would be to build a trap from 90* fittings without glue. When the water in the trap freezes in the winter it will...
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    No.

    No.
  13. Replies
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    138

    Your question will best be answered by your...

    Your question will best be answered by your contractor as he will have to take responsibility for the compatibility and installation.
  14. Nest SUCKS! I have experienced crazy behavior on...

    Nest SUCKS! I have experienced crazy behavior on systems with Nest. Change it to a good thermostat, ANY other thermostat, and I predict the problem won't occur again.
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    R-22 is not toxic. The only condition under which...

    R-22 is not toxic. The only condition under which it is dangerous is if so much leaks that it displaces the air needed for breathing. Residential systems don't contain enough refrigerant to pose a...
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    I went to the Milwaukee tools site this morning...

    I went to the Milwaukee tools site this morning to add my interest in having them work with Doug. Keep the faith, Doug.
  17. Replies
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    Don’t use nest! Worst thermostat out there!

    Don’t use nest! Worst thermostat out there!
  18. Also get static pressure tips. They are less...

    Also get static pressure tips. They are less expensive than a pitot tube.
  19. Replies
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    364

    There are thermostats available that can control...

    There are thermostats available that can control multiple devices and stages with only two wires.

    I would want a two-stage furnace to operate as two-stages. Otherwise just get a single stage...
  20. The equipment is too big for the ducts and...

    The equipment is too big for the ducts and probably too big for the house. All your contractors were too lazy to determine what is right. They were only interested in selling you equipment.
    The...
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    Your profile says you are the homeowner. Is this...

    Your profile says you are the homeowner. Is this something you are trying to remedy yourself?
  22. Bigger equipment is NOT an upgrade, it is an...

    Bigger equipment is NOT an upgrade, it is an UPSELL. Most duct systems are not big enough to begin with, so bigger equipment makes matters worse.

    Ask them to provide their Manual J load...
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    Have them prove their design with facts.

    Have them prove their design with facts.
  24. That is entirely wrong. Fix the ducts or size the...

    That is entirely wrong. Fix the ducts or size the equipment for the available air flow.
    Oversizing the equipment will result in poor performance, more frequent breakdowns, and shorter equipment...
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    Spot on. Actually an insulated roof is best. Or...

    Spot on.
    Actually an insulated roof is best. Or seal the house and ceiling. Then use natural ventilation.
  26. An indication the equipment is too big and the...

    An indication the equipment is too big and the ducts are too small. This is a common problem.
  27. Replies
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    If I were you, I would get someone who actually...

    If I were you, I would get someone who actually knows what they’re doing.

    I would measure air flow and make corrections.
  28. “Working” and legally approved may be two...

    “Working” and legally approved may be two different things. Equipment that “ works” may not be covered for insurance or liability.
  29. Site rules do not allow us to give assistance for...

    Site rules do not allow us to give assistance for DIY.
  30. Replies
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    Sad but true.

    Sad but true.
  31. Replies
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    Communicating thermostats make use of more...

    Communicating thermostats make use of more features of the equipment.

    You’re on your own when it comes to making wiring changes. Site rules prohibit giving advice for DIY.
  32. Replies
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    273

    Yup. Homeowner with a manifold. That won’t end...

    Yup. Homeowner with a manifold. That won’t end well.
  33. Replies
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    143

    Some systems run the blower for a few minutes...

    Some systems run the blower for a few minutes after the cycle ends. Alternatively, there may be a loose duct which has air moving while the blower is off. Or, perhaps it is just the cold air...
  34. No. There are A LOT of things wrong with that...

    No.
    There are A LOT of things wrong with that installation. Ducts, drain, and venting are the obvious ones. Making it right won't be inexpensive. Ask for a technician who has been trained to do...
  35. No. Residential furnaces are not rated for mobile...

    No. Residential furnaces are not rated for mobile homes.
  36. Replies
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    i notice the curve intersects the 41* line twice....

    i notice the curve intersects the 41* line twice. Why is that?
  37. Replies
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    I have never seen a successful booster fan...

    I have never seen a successful booster fan installation.
    The majority of systems we see have oversized equipment and undersized ducts. A booster fan does not solve either of those problems.
    Long...
  38. Design for comfort and efficiency, energy savings...

    Design for comfort and efficiency, energy savings will result.
  39. That’s terrible duct work. Undersized, poorly...

    That’s terrible duct work. Undersized, poorly designed, and poorly installed.

    I recommend completely starting over. Begin with a load calculation. Then appropriate equipment sizing. Followed by a...
  40. Replies
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    The coil is not to be mounted before the furnace,...

    The coil is not to be mounted before the furnace, so the answer is NO.

    Is this a DIY project?
  41. Replies
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    I think we all have days like that. I certainly...

    I think we all have days like that. I certainly do. But I find when I complete all those little tasks, it makes my wife happy.
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    It will be when he puts in a Nest.

    It will be when he puts in a Nest.
  43. Replies
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    Please note that this site does not provide...

    Please note that this site does not provide assitance for DIY.
  44. Replies
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    Either they provide insulation service or they...

    Either they provide insulation service or they partner with an insulator. I would be more concerned about how they chose the size for your equipment. Using the size of the old equipment is a lazy...
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    We haven't needed backup heat here. I don't...

    We haven't needed backup heat here.

    I don't know if backup is a code requirement.
  46. Replies
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    You’ll be better off with a single stage system...

    You’ll be better off with a single stage system and a ducted dehumidifier which will operate during low load conditions.

    BTW, a load calculation is NOT X sq.ft. per ton. There is a link to a...
  47. Replies
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    Follow the installation instructions exactly. If...

    Follow the installation instructions exactly. If the contractor does not know why, then he’s not the guy you want doing the work.
  48. Replies
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    A load calculation will answer both of your...

    A load calculation will answer both of your questions about size.

    The brand is less important than the contractor. A poor installation will ruin good equipment. A good installation will make the...
  49. Replies
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    His projection of 150 PPM CO from a new furnace...

    His projection of 150 PPM CO from a new furnace is about 100 PPM too high. I often have furnaces with 30 PPM or less. He does not know enough for you to trust his advice.
  50. Given an average life of 17 years, it would be...

    Given an average life of 17 years, it would be foolish to keep he old coil.
    Performance will be much better with a fully matched system and there may even be rebates available for high efficiency...
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