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  1. the system is a Gibson 4 ton, Outdoor:...

    the system is a Gibson 4 ton, Outdoor: JT4BD-048K, Indoor: C7BAM048C-C, located in basement, one system serve all 3 floors, 3600 sq ft. basement is unfinished.
    thermostat is in the middle of 1st...
  2. based on the thermometers I have on each floor, ...

    based on the thermometers I have on each floor,

    basement low 71F, high 74.5F
    1st floor low 74F, high 74F, RH range 40% to 50%
    2nd floor 75F to 77F

    temperature seems to be at lowest at the...
  3. two story colonial with basement, 1200 sq per...

    two story colonial with basement, 1200 sq per floor. 19ft high foyer, 4 bedroom with ceiling fan rough in, 2 full bath with recess light and exhaust fans on 2nd floor,
    attic access is in master...
  4. relation between attic temperature and AC

    looking at my remote thermometer in that I placed in attic, it registered peaked at 114F and low 69F in attic yesterday,
    weather.com observed yesterday (Monday 7/7/2014) outdoor 92F and low 73F.
    ...
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    oh, and recent year, I've seen more cracks on...

    oh, and recent year, I've seen more cracks on drywall between wall joints, one of my bedroom door can not closed, probably the foundation has finally settled.
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    the unit was installed on jan 2013. vibration,...

    the unit was installed on jan 2013.
    vibration, yes, installer gave me the 4 rubber pads
    cracking sound, no,
    heard the similar popping sound when someone use the hot water 2nd floor bathroom, ac...
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    I am pretty sure it is the outdoor unit itself,...

    I am pretty sure it is the outdoor unit itself, last winter I've even have to put some flexible silicone around all the outer shell/casing to prevent loud metal sheet rattling noise.

    I also heard...
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    anti-vibration rubber

    my gibson 13seer 4 ton heat pump is directly attached to the outside of basement wall with metal bracket.
    during this past winter, when I sat on the chair, indoor, and next to the wall where this...
  9. 498371 498361 here is some data from my unit I...

    498371
    498361
    here is some data from my unit
    I raised the indoor target temperature to 79F and AC turn on at 81F.

    so far it ran twice today, cycle 1 around 4:16pm and cycle 2 around 7:30pm...
  10. [QUOTE=udarrell;18542871] the builder...

    the builder originally installed a 10 seer 3.5 ton AC only, and last year, I replaced it with a 13 seer 4 ton heat pump due to raising cost of propane.
    I wanted more heating than cooling from this...
  11. this house was built 9 years ago, exterior walls...

    this house was built 9 years ago, exterior walls are R19, tyvek wrapped on 1st and 2nd floor, vinyl sidings. basement is unfinished, has precast superior wall with r5 Styrofoam, front half...
  12. the RH reading is from the thermostat, which...

    the RH reading is from the thermostat, which installed center of 1st floor.

    the temperature 50F reading at the mouth (inside) of supply register vent while AC is running, and I don't have RH...
  13. I have no idea if it removes any humidity. the...

    I have no idea if it removes any humidity.
    the thermostat registered the indoor begin RH at 55%, 76F, and then at the end of the 30 minutes cycle, it went down to RH 48% 74F, and about 2 or 3 hours...
  14. supply temperature and return temperature question

    my unit is Gibson 4 ton 13 seer heat pump in stalled in jan 2013, for a 2400 sq ft colonial 2 story, from what I heard, it is oversized in AC, yesterday, sunny all day in 80s F, southeastern PA, i...
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    ok, thank you.

    ok, thank you.
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    Media filter question

    I am looking for opinion/recommendation on filter, furnace is 80k btu, heat pump is 4 ton, current filter is 16x25x1, from what I understand, it is undersized for the 1600 cfm heat pump, and 20x24 is...
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    I am glad the icing vinyl problem was long gone a...

    I am glad the icing vinyl problem was long gone a few days after I unplugged all my humidifiers.
    I did open the cover on exhaust fans yesterday, and use aluminum tape to seal around the housing.
    ...
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    i know what i did wrong, :beat:i went to attic...

    i know what i did wrong, :beat:i went to attic for about 30 minutes to 45 minutes with my attic access pannel wide open the whole time when indoor was 73F and outdoor was in low teens.
    now i...
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    this 4ton Gibson 13 seer heat pump (no heating...

    this 4ton Gibson 13 seer heat pump (no heating strip) actually not bad, last week it was kept my house at 69F to 71F down to single digit F, it defrosted every 6 hours, and lower the indoor by 1F, ...
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    Good news, power is now restored, house 53F from...

    Good news, power is now restored, house 53F from my wifi thermostat, should I use propane furnace or heat pump to bring the temperature back up.
    I installed two individual wifi thermostats for each...
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    Not home now, but I am thinking tomorrow morning...

    Not home now, but I am thinking tomorrow morning if power has not restored, shut off water main in basement, then open all faucets and drain through the lowest walk out basement hose bib, In case...
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    Southern chester county, pa No one home now,...

    Southern chester county, pa
    No one home now, went to in law home with heat
    So the only thing i worry is burst pipe and flood the house, my two 2nd floor bathrooms has PVC run along insulated outer...
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    I don't have generator, with more than 1/2...

    I don't have generator, with more than 1/2 million home without power at once, i did not even try to go buy one.

    Looks like safest is pay the water.
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    Power outage

    This morning 7:15am lost power and still in the dark, I am looking for to keep house warm enough to avoid frozen water pipe.
    With a battery operated co detector, is it safe to light up a propane...
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    this morning 7am, I looked at the humidity in...

    this morning 7am, I looked at the humidity in attic again, 12F, 75% to 78%, I looked at my other thermometer at front porch, 12F, 68%, then I looked at my car and there is a thick frost on every...
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