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  1. Replies
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    You got a good start on real humidity control. ...

    You got a good start on real humidity control. Set it up for the hose drain and 50%RH. Let it go. When it peters out, consider the Santa Fe or Ultra-Aire for more effeciency and features.
    Keep us...
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    I think you are pretty well set. Regards Teddy...

    I think you are pretty well set.
    Regards Teddy Bear
  3. Replies
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    Contractors sell small duct fans that connect to...

    Contractors sell small duct fans that connect to the your heating cooling ducts. A small window fan blowing in the amount of air you want with you a/c blower on low works. Also try a box fan in...
  4. Wind is the most powerful mover of air. Watch...

    Wind is the most powerful mover of air. Watch wind direction and strength. All living spaces should have a specific amount of fresh air push into them when occupied. About a fresh air change in...
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    What is the temp/%RH in your home and the outdoor...

    What is the temp/%RH in your home and the outdoor temp/dew point during the hottest part of the day?
    The indoor temp/%RH is the results of the actual amount of moisture removed by the a/c verses the...
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    Why not start with a temp/%RH meter in the...

    Why not start with a temp/%RH meter in the bedroom to find the real temp/%RH? You could try operating the a/c blower in the "on" mode for an evening to get the effect of air circulation.
    The issue...
  7. Slow the air flow to get a colder a/c coil...

    Slow the air flow to get a colder a/c coil temperature. A <48^F a/c coil removes several times more moisture than a 55^F coil. Extend the length of cooling cycle as much as possible. It takes 20...
  8. I used the Ultra-Aire free app for estimating the...

    I used the Ultra-Aire free app for estimating the amount of moisture being removed from a cooling coil.
    Plug in the temp/%RH and out, estimate the cfm provides lbs. per hour condensate. Will do the...
  9. Reheat is the commercial solution to humidity...

    Reheat is the commercial solution to humidity control. Because of inefficiency most residential codes do not allow reheat. A/c removes about 1-2 lbs. of moisture per KWH. The real killer is the...
  10. Coils have wet spots, warm wet spots produce...

    Coils have wet spots, warm wet spots produce odors. Cold wet spots, not so much.
    Follow your nose and keep us posted.
    Regards TB
  11. In your climate, your idea is good. But you have...

    In your climate, your idea is good. But you have enough wet cool weather to get into trouble with indoor moisture problems that will end up growing mold. Keep an eye on the a good %RH meter and...
  12. Replies
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    From personal monitoring and all the post over...

    From personal monitoring and all the post over the last several years, us the larger heat pump because of need for efficient heat. Electric strip is 2-3 time higher priced than heat pump.
    If you...
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    If you want the most comfortable and healthy...

    If you want the most comfortable and healthy home, you need both. In the warm seasons with adequate fresh air infiltration/ventilation, a small whole house, quality dehumidifier (Ultra-Aire) is a...
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    If you want total %RH humidity control, add whole...

    If you want total %RH humidity control, add whole house dehumidifier for 50% RH throughout your home during the low/no cooling loads and high outdoor dew points.
    The best whole house dehumidifier is...
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    I have a three speed gas furnace. On low speed,...

    I have a three speed gas furnace. On low speed, it does not get heat to the most distant master bedroom in the same portion as it does on high. We have learned to live with it.
    Not ideal, I am not...
  16. Replies
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    396

    I love you dearly brother, but what are smoking? ...

    I love you dearly brother, but what are smoking? You have a hot day, the cooling is not cycling. You have normal following evening, is the a/c short cycling?
    You have moderate day followed by...
  17. Any interest in improving humidity control during...

    Any interest in improving humidity control during cool wet weather. The larger coiled high SEER a/c and higher comfort expectations could use the benefits of a small whole dehumidifier added to the...
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    Avoid multistaging as much as possible. The...

    Avoid multistaging as much as possible. The distribution of air changes much as air flow changes with speeds. I have 3 stage heating, very poor distribution to far corners. Aslo include small...
  19. I you really want humidity control, I am with...

    I you really want humidity control, I am with this post. A/c humidity involves over-cooling. When the sensible cooling loads are low or none and the outdoor dew points high, you really need a small...
  20. Teddy Bear is not that good. He would suggest,...

    Teddy Bear is not that good. He would suggest, start taking things apart and look for the wet moldy spot. It could be a duct that allows outside dap air to come into the home and stay wet for...
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    These systems complicated multispeed, expensive,...

    These systems complicated multispeed, expensive, hard to setup, and hard to maintain systems are slightly better but will not provide %RH control during low/no cooling loads and high outdoor dew...
  22. Replies
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    Home have a natural infiltration/exfiltration...

    Home have a natural infiltration/exfiltration form wind/stack/operation of mechanicals. Equal in/equal out. Adding an ERV adds to this.
    Adding 80 cfm competes with infiltration and increases...
  23. Replies
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    The temperature in the boiler will not effect the...

    The temperature in the boiler will not effect the dehumidifier. During winter the dehu will not operate.
    Glad to here how good it all works.
    Thanks for the support.
    Keep us posted.
    Regards...
  24. Replies
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    Adding the 40 cfm to the natural infiltration...

    Adding the 40 cfm to the natural infiltration will work. It probably is equal to 80 cfm of fresh make-up air.

    It will not make that much difference.
    Low forward to the effect.
    Keep us posted....
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    Air in the basement will get to the mainfloor. Is...

    Air in the basement will get to the mainfloor. Is your air handler in the basement? If yes, recirculation is for sure.
    Regards Teddy Bear
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    Give it a try. Regards TB

    Give it a try.
    Regards TB
  27. Replies
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    Bring in fresh and create a positive pressure...

    Bring in fresh and create a positive pressure which is good. Introduce the fresh air at the dehumidifier between the returns and the dehumidifier. Use a 6" fresh air inlet through a 6" screen hood....
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    I am sure you could some fresh air during calm...

    I am sure you could some fresh air during calm wind and moderate temperatures. You must have wet spot someplace in the space. Could be in the air handler near or around the cooling coil of the a/c. ...
  29. It will happen someday. Like all innovation,...

    It will happen someday. Like all innovation, spending more money for options must be proven beyond a shadow of any doubt.
    By the way, a good system will bring fresh air when needed, not outside is...
  30. Looks ok to me. If this means you had a cooling...

    Looks ok to me.
    If this means you had a cooling coil of 48^F with a normal 75^F return. It is critical to have a 45-50^F coil temperature to get to 50%RH during high cooling loads.
    Regards Teddy...
  31. If you care to know to much about the home you...

    If you care to know to much about the home you live in, yes. You will soon realize is that it is impossible to provide perfect control. But you can do a lot to improve the space you live in regards...
  32. The Deh3000 parrells the controls on the...

    The Deh3000 parrells the controls on the Ultra-Aire 70H. All other UA have no control on the unit itself. The DEH 3000 controls fresh air ventilation on/off, daily/weekly occupancy schedules, fan...
  33. Attaching the two I use the most. CO2 meter...

    Attaching the two I use the most.

    CO2 meter has simple CO2 without data logging for <$100. The also have loggers for more.


    http://www.co2meter.com/collections/fixed-wall-mount

    Netatmo has...
  34. Again, I must say, I am impressed with your...

    Again, I must say, I am impressed with your effort.
    To stand a chance to control the moisture levels in a home, you have not choice but to setup the a/c to be aggressive when it operates. I like...
  35. Yes be patient. %RH changes in home take time...

    Yes be patient. %RH changes in home take time because of the mass of the material in the home hold large quantities of moisture. 65%RH in a home cause all of the materials in the home to maintain a...
  36. I am breathing a sigh of relief, thank you....

    I am breathing a sigh of relief, thank you.
    Regarding ducts, an air return from the open part of the home and fresh air to the return side of the Ultra-Aire. The supply can go to the a/c supply and...
  37. You have come to the right place for a lively...

    You have come to the right place for a lively discussion. I like the way you think and amount of dedication it will take to end up with fresh air ventilation and exact %RH control.
    It is hard for...
  38. Replies
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    Great, glad the system works well. Some finer...

    Great, glad the system works well.
    Some finer points, are you getting the correct amount of fresh air during calm winds? My guess is yes, because the home is 50%RH instead of lower %RH as some have...
  39. Replies
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    There is a service port on the suction line of...

    There is a service port on the suction line of all of our units. All of our units use cap tubes and suction line accumulators.
    Our components are world sourced and assembled in Madison, WI. Most...
  40. Calibration looks ok. Leaving the meter in the...

    Calibration looks ok. Leaving the meter in the bag until it stops changing. Over night might be better. Never trust any %RH meter. Another good test is to measure the temperature of water in metal...
  41. Yes, call 800 533 7533 ask for Justin for the...

    Yes, call 800 533 7533 ask for Justin for the details.
    Thanks for your interest.
    Keep us posted.
    Regards Teddy Bear
  42. Hold up on closing the fresh air inlet for a...

    Hold up on closing the fresh air inlet for a minute. Lets confirm that the dehumidifier is working. Can you collect the condensate from the dehumidifier for a specific time to confirm the rate of...
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    We have been trying to fix homes with indoor air...

    We have been trying to fix homes with indoor air quality problems for the last 25 years. A small percentage of the population is very sensitive to even minor indoor air quality problems which include...
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    I should know better, sorry. Peter, you can send...

    I should know better, sorry. Peter, you can send me an email using my personal information by clicking on my name.

    Regards Teddy Bear.
  45. Thanks for the support, guys. In most cases,...

    Thanks for the support, guys.
    In most cases, an a/c with cold enough coil (<10^F colder than the desired home dew point), removes about +2 lbs. per hour per ton of cooling. 3 ton X 2 = 6 lbs. per...
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    Missing is the %RH of the 56^F supply air. It...

    Missing is the %RH of the 56^F supply air. It would be helpful if we had an accurate number. It would indicate the effect of the a/c.

    If the a/c blower operates when the dehu is operating, then...
  47. Replies
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    How about some of the info that I requested in my...

    How about some of the info that I requested in my last post. What is the a/c return & supply temp/%RH to the home after the a/c is operating for 20-30 mins.
    Lowering the temperature in the home...
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    UV lite kills with 7" of direct light with fresh...

    UV lite kills with 7" of direct light with fresh lamp. A thorough dry cycle for a couple hours everyday prevents biological growth throughout the duct system. Fan on for a couple hours a day is a...
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    The new high efficiency a/cs have larger cooling...

    The new high efficiency a/cs have larger cooling coils and generally remove less moisture than the old small a/c beater we have used.
    Keeping a home dry in a damp climate is important to health and...
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    This is a common problem with certain weather...

    This is a common problem with certain weather sequences. As you keep your home cool and the outdoor air dew points are near or above your indoor temperature, the inner sheathing on the outside walls...
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