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  1. Only 9 years old and already 410...replace the...

    Only 9 years old and already 410...replace the compressor. That's a very early death for a compressor . Keep the units maintained so little problems are caught before they turn into big repair bills.
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    Lennox used to have a subcool charging chart for...

    Lennox used to have a subcool charging chart for fixed orifice. Each size was a little bit different but as a general rule 15-16 at 65 outside and it went down to 8ish as the temp rose up to 95
  3. I use rtv on metal pipe and plastic bolt on pvc

    I use rtv on metal pipe and plastic bolt on pvc
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    Your HVAC contractor should take care if it for...

    Your HVAC contractor should take care if it for you when he installs the second system and reducts for addition.
  5. Most of the time you can see the oil stripes on...

    Most of the time you can see the oil stripes on the coil.
  6. Sure your scale is right? Pull some out and see...

    Sure your scale is right? Pull some out and see how it reacts.
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    They should be on all the time. Can be wired to...

    They should be on all the time. Can be wired to do what you want though.
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    Dehumidification set to medium instead of high...

    Dehumidification set to medium instead of high will eliminate that. Set to high it over coils 3 degrees.
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    Had one like that last year. Tried talking them...

    Had one like that last year. Tried talking them out of compressor but that's what they wanted. Three liquid line and three suction line drier changes later it finally stopped plugging them up. Had...
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    Since the average person buys a different house...

    Since the average person buys a different house every 7 years you could be on to something.
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    Does the one that over coils display"cooling" or...

    Does the one that over coils display"cooling" or "cooling and dehumidifing". Almost bet it's set up for a humid climate and that's why it's over cooling
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    Lennox in my house and not the builder grade . ...

    Lennox in my house and not the builder grade . More quiet than the cheap brands . If/when it breaks down I have parts in the van.
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    It should have the heat exchanger inspected...

    It should have the heat exchanger inspected before any parts are put in. They will operate even though unsafe to do so.
  14. If your readings are correct then yes it's a...

    If your readings are correct then yes it's a problem. Either a txv or fixed orifice require liquid at the metering device which means there must be subcooling.
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    Yes you are. Very hard on both the system and the...

    Yes you are. Very hard on both the system and the house to be running the AC that cold. Moisture will condense in the walls and lead to mold problems when the room temps are below outside dew points....
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    Shouldn't need to seal the flexible part,just the...

    Shouldn't need to seal the flexible part,just the metal seams.
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    Probably going to freeze unless you heat tape it.

    Probably going to freeze unless you heat tape it.
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    Agreed. I'm 54 and feeling retirement coming in...

    Agreed. I'm 54 and feeling retirement coming in the next few years. The body just plain hurts most days.
  19. Readings sure look like return air is pulling in...

    Readings sure look like return air is pulling in attic air.
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    Residential split systems don't have access ports...

    Residential split systems don't have access ports at the evaporator coil so readings are taken at the condensing unit.

    Air temperatures are taken at the air handler,not the registers. You can...
  21. Good catch. I missed that completely.

    Good catch. I missed that completely.
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    Inducer bearing failure will cause the furnace to...

    Inducer bearing failure will cause the furnace to shut down. They're not too expensive and take less than an hour to fix.
  23. Put a cap on the first vent. It's defeating the...

    Put a cap on the first vent. It's defeating the purpose of the
    trap . That's why you're getting water in the secondary.
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    Be aware that package units usually don't last as...

    Be aware that package units usually don't last as long as split systems. Most of them have the heat exchanger in the cold air stream in cooling mode. That causes humid outside air to condense in the...
  25. Your root problem is they ran the condensate...

    Your root problem is they ran the condensate wrong. The vent goes on the other side of the trap
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    The box store should stand behind you. That's the...

    The box store should stand behind you. That's the only reason a person would pay their mark up instead of buying from the installing company in the first place.
  27. That furnace comes from the factory set up for a...

    That furnace comes from the factory set up for a 3 ton AC. He should have set the dip switches on start up performance checking. Yes adjust the air flow will make a huge difference.
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    The xp25 is pretty popular here. Impressive...

    The xp25 is pretty popular here. Impressive system.
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    Heating might not be so bad but 50 degree air...

    Heating might not be so bad but 50 degree air blowing on a wet body is going to be down right uncomfortable. Move the register.
  30. You're thinking about it too much. I've got...

    You're thinking about it too much. I've got thousands of 90%+ furnaces out there and have had to clean birds nests out of two. Never had insects be a problem but have had to pull out a half dozen or...
  31. Had a ruud do that to me a few years back. First...

    Had a ruud do that to me a few years back. First trip it was dirty and a weak condenser fan capacitor. Fixed that and it ran good until the next 100 degree day. Reset and found nothing wrong two...
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    For sure move it from the kitchen. Not only is it...

    For sure move it from the kitchen. Not only is it circulating cooking smells through the house it will also get a heavy grease coating over the years.
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    Sorry but this is not a DIY site. The rules...

    Sorry but this is not a DIY site. The rules prohibit us from answering those types of questions
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    Can we agree that the liquid line can not be...

    Can we agree that the liquid line can not be below ambient even with a missing orifice?
    My thought is that's not subcool he's seeing but rather flashing from the drier acting as an orifice.. How...
  35. Lennox xc25

    Lennox xc25
  36. Some thermostats over cool when the humidity is...

    Some thermostats over cool when the humidity is higher than the set %. No idea if that's going on there or not. As dogboy stated turn the thermostat up two degrees until you get it figured out....
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    225 at 108 ambient with a 8 degree subcool puts...

    225 at 108 ambient with a 8 degree subcool puts your liquid line colder than ambient. Change the restricted filter drier that's inside the AC. Check the orifice while you have the system empty.
    ...
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    What does the load calculation say the home needs?

    What does the load calculation say the home needs?
  39. Six months old is under warranty. All you need to...

    Six months old is under warranty. All you need to do is call the installation company and let them figure it out.
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    I prefer the timer off and let the temperature...

    I prefer the timer off and let the temperature dictate which stage runs. Comes from the factory with the timer on.
  41. Seventeen year old system, could be anything....

    Seventeen year old system, could be anything. When was the last time it had annual maintenance?
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    How they run is dependant on how the thermostat...

    How they run is dependant on how the thermostat is set up. There's a stage delay timer option or staged by temperature. With the timer it runs on low for x minutes, adjustable from 20 minutes to 2...
  43. Pricing changes from city to city so no way to...

    Pricing changes from city to city so no way to know until you call . Expect to pay around the same rate as the auto mechanics charge per hour.
  44. Your reasoning is correct. Warm air rises and...

    Your reasoning is correct. Warm air rises and cold air falls. There's a solution but can't tell you what the fix is for that house from here.

    My house the simple solution was to add a return to...
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    Could also be your duct is undersized. The leaks...

    Could also be your duct is undersized. The leaks helped get more air flow through the coil but not out the registers. By lowering the actual volume of air going through the coil the coil and cabinet...
  46. With no supplies or returns in the basement the...

    With no supplies or returns in the basement the door sweep does nothing for the AC .

    Since you now know the basement is negative pressure the next step is to call a combustion analysis certified...
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    The question with a leak becomes is it still...

    The question with a leak becomes is it still mo99 or has one of the refrigerants in the blend leaked out and it's a mystery refrigerant now. That's one of the biggest downfalls of the blended r22...
  48. I wouldn't want either location with that rusty...

    I wouldn't want either location with that rusty mess,been too many water leaks. If there's room to increase the drop size that's where it should go, placed horizontal.
  49. Furnace and water heater gas or electric? If gas...

    Furnace and water heater gas or electric? If gas you'll want to make sure the basement isn't in a negative pressure. Easiest home owner test is turn the AC on them open the basement door just a crack...
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    If the unit is maintaining the temperature but...

    If the unit is maintaining the temperature but the cabinet is sweating the solution is to lower the humidity in the basement. A dehumidifier will solve that problem.
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