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  1. Site rules prohibit giving technical advice, such...

    Site rules prohibit giving technical advice, such as rewiring/changing blower speeds. This falls under DIY advice as noted at the top of the page.
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    Opening the return near the furnace can result in...

    Opening the return near the furnace can result in recirculation of exhaust fumes from the furnace or nearby water heater.
    Blower compartments have a safety switch specifically to prevent blower...
  3. PLEASE MAKE SENTENCES AND USE PUNCTUATION! It...

    PLEASE MAKE SENTENCES AND USE PUNCTUATION! It takes too much effort for a reader to interpret what you have run together.
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    You have blog? Where is it? Or do you just...

    You have blog? Where is it?

    Or do you just mean this post?
  5. That is a completely comprehensive list. It is 52...

    That is a completely comprehensive list. It is 52 pages long. You should expect it to take several hours and it will be costly. Why are you interested in that level of inspection?

    The basic things...
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    It sounds like the duct system is so small that a...

    It sounds like the duct system is so small that a restrictive filter reduces the air flow to the point of freezing. Your equipment could be too big (not uncommon) or both problems could exist.
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    Depending on the size of the appliance, it may...

    Depending on the size of the appliance, it may require an increase in vent size immediately off the connector.
    As Steve stated, get a combustion analysis. Look for one who has specific training in...
  8. Thread: What to buy?

    by kdean1
    Replies
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    How was the size of the equipment determined?...

    How was the size of the equipment determined? Same as the old one? Square footage? Neither is correct.
    A Manual J load calculation is the ONLY way to determine the load for your house. It is likely...
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    What kind of air filter are you using? One which...

    What kind of air filter are you using? One which is too restrictive may cause water to blow off the coil.
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    You’ll need to find out if the refrigerant pipes...

    You’ll need to find out if the refrigerant pipes are in the wall. You may have to hire a technician to make that determination. If the pipes are transmitting noise it may be necessary to cut the...
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    No response from the OP. It seems he didn't...

    No response from the OP.

    It seems he didn't like our answers.

    I've been considering a new slogan. Guys, tell me what you think.
    "You may not like our prices, but we're right."
  12. Re. load calculation - far too many use a "rule...

    Re. load calculation - far too many use a "rule of thumb" of 500 sq. ft/ton. It would astonish me if all 7 actually did a load calculation. Might they have just replaced it with the same size as the...
  13. Sorry, that's wrong. The indoor coil needs a...

    Sorry, that's wrong. The indoor coil needs a different piston or a TXV as you're not using the same refrigerant.
    You are right to pull a vacuum, but change the regulating device first or you'll have...
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    I have discovered some large air leaks in the...

    I have discovered some large air leaks in the ducts which have caused high electric bills. Or perhaps he didn't adjust the charge properly.
    You may need to have it checked by a different contractor.
  15. "Too much SEER" What does that mean? SEER stands...

    "Too much SEER" What does that mean? SEER stands for Seasonal Energy Efficiency Rating. You can have a SEER rating as high as your budget allows. High SEER units use less energy. He would be correct...
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    "Air comes on" Are you referring to the blower...

    "Air comes on" Are you referring to the blower (indoor unit)?
    It is not uncommon for the condensing unit to have a 5 minute time delay.
    "Fan in the condenser" The condenser is the outdoor unit....
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    The 2 ton system may be oversized more than is...

    The 2 ton system may be oversized more than is good for it given how well insulated the house is.
    From your description, the air conditioner is not performing as it should. The installer will need...
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    Variable speed blowers DON’T overcome bad ducts.

    Variable speed blowers DON’T overcome bad ducts.
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    You'd loose that bet. Most site members do. All...

    You'd loose that bet.
    Most site members do.
    All furnaces my company works on get combustion analysis. Old and new.
    It’s stupid to ignore the installation manual.
  20. Thread: Install cost

    by kdean1
    Replies
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    293

    Site rules prohibit discussing prices. Your...

    Site rules prohibit discussing prices.

    Your idea is a bad one. YOU will be responsible for all warranty. Good contractors won’t have time for you because we’re all busy with customers who aren’t...
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    Site rules prohibit giving advice for DIY.

    Site rules prohibit giving advice for DIY.
  22. Ditto. Find someone who has a clue.

    Ditto. Find someone who has a clue.
  23. Thread: Introduction

    by kdean1
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    :putergreet:Welcome. Tell us about yourself.

    :putergreet:Welcome. Tell us about yourself.
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    Google can do that.

    Google can do that.
  25. A dehumidifier can be run without the AC. BUT,...

    A dehumidifier can be run without the AC.
    BUT, be sure that what you have is not a HUMDIFIER as they are more common. If it has a 1/4” copper or plastic tube connected to it from your water pipes...
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    I think you’re right. A static pressure...

    I think you’re right. A static pressure measurement will confirm.
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    Site rules prohibit giving technical advice in...

    Site rules prohibit giving technical advice in the AOP forum.
  28. Thread: Good Day Today

    by kdean1
    Replies
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    Well done! There is a lot still to be learned....

    Well done!
    There is a lot still to be learned. I hope you enjoy your career.
  29. That's what I thought as well.

    That's what I thought as well.
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    Many of us think that 2 tons is TOO BIG.

    Many of us think that 2 tons is TOO BIG.
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    1) Probably none as most duct systems are too...

    1) Probably none as most duct systems are too small to begin with. Only by measuring static pressure and comparing that to the fan chart is it possible to tell.
    2) See #1
    3) Not for your situation....
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    Why would the manufacturer put it in the...

    Why would the manufacturer put it in the installation instructions if it is not important?
    The equipment will run but it is causing gradual internal damage because of the contaminants which were not...
  33. Closing registers is the conventional wisdom and...

    Closing registers is the conventional wisdom and it MAY deliver more air to the other registers, but there is a high probability it has increased static pressure and reduced total air flow through...
  34. Nest is unreliable. I do not warrant equipment...

    Nest is unreliable. I do not warrant equipment with a Nest.
    Get a real thermostat, such as a Honeywell.
  35. OP, your thinking is the “it’ll never be right”...

    OP, your thinking is the “it’ll never be right” mentality. Are you a glass is half empty person?
    As a contractor I wouldn’t waste my time asking for a replacement unit asI know the answer will be...
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    Best of luck. Bye.

    Best of luck.

    Bye.
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    Checked what with whom? Is there a contractor...

    Checked what with whom? Is there a contractor involved?
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    Is it approved for mobile home use by the...

    Is it approved for mobile home use by the manufacturer?

    All the questions in this thread are ones the installing contractor should be answering.
  39. Thread: Cold air return

    by kdean1
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    184

    Are there any supply runs in the basement? There...

    Are there any supply runs in the basement? There should be an equal amount of supply and return. However, during cooling season you probably don't need either for the basement.
    It is likely all you...
  40. Amana PTAC units suck. Condenser fan blades...

    Amana PTAC units suck. Condenser fan blades shatter and puncture the coil.
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    How does someone figure it is blowing hot air? Do...

    How does someone figure it is blowing hot air? Do they think the furnace is running instead of the air conditioner?
  42. It appears your air conditioner may not be...

    It appears your air conditioner may not be running at all. You may have to hire a different tech because the installer should be able to see a problem immediately.
  43. Flexible duct should be stretched, not slack....

    Flexible duct should be stretched, not slack. Slack duct makes the inner diameter smaller with a resulting reduction in air flow. Turns should be metal and insulated.
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    Run fast and far from Nest thermostats. They are...

    Run fast and far from Nest thermostats. They are unreliable. I refuse to install systems with a Nest thermostat.

    Before someone else beats me to it - Nest is POO!
  45. Perhaps the system is low on refrigerant. Look at...

    Perhaps the system is low on refrigerant. Look at the larger of the two copper pipes that connect to the indoor and outdoor unit. It is the insulated pipe. It should be cold and moisture should...
  46. As I stated earlier, IT DOES NOT, CANNOT PRODUCE...

    As I stated earlier, IT DOES NOT, CANNOT PRODUCE CARBON MONOXIDE!
  47. Please provide air temperature at the closest...

    Please provide air temperature at the closest return to the fan coil and the outlet temperature at the closest supply register.
    In what part of the country are you located? Is the new equipment the...
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    Jump duct? Though I agree that combustion air...

    Jump duct? Though I agree that combustion air from outside is preferable.
    What is the total Btu input of both appliances?
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    Honeywell Prestige IAQ has great features and is...

    Honeywell Prestige IAQ has great features and is very user friendly.
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    Manual J does not design for 65° indoors....

    Manual J does not design for 65° indoors. Standard is 75° at 50% RH.
    I consider 65° much too cold, especially when the humidity is under control.

    A unit that is capable of reaching 65° will be...
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