Search:

Type: Posts; User: teddy bear

Page 1 of 20 1 2 3 4

Search: Search took 0.06 seconds.

  1. By measuring the temp/%RH of the air coming from...

    By measuring the temp/%RH of the air coming from the a/c supply. Numbers like 60^F, 70%RH are typical of a cold coil able to provide 75^F, <50%RH in a home.
    http://www.dpcalc.org/
    The coil temp...
  2. Here is your problem, your a/c is designed to...

    Here is your problem, your a/c is designed to remove the latent load must have the sensible cooling load. This works great on a very hot day. But during cool wet days and normal evening, there is...
  3. Replies
    5
    Views
    179

    Dry climate, should be no problem with 100 cfm of...

    Dry climate, should be no problem with 100 cfm of fresh air when occupied.
    Regards TB
  4. Replies
    5
    Views
    277

    During high cooling loads, the dehumidifier if...

    During high cooling loads, the dehumidifier if there is one should not have to operate to maintain <50%RH. I agree with the previous post, a dehu could put out +7,000 btus per hour.
    Look forward to...
  5. Replies
    5
    Views
    179

    The idea is to have a fresh air change in 4-5...

    The idea is to have a fresh air change in 4-5 hours to purge indoor pollutants and renew oxygen. Run the fan when you are in the home.
    What part of the country are you in?
    Regards TB
  6. Welcome to the club. You need to understand that...

    Welcome to the club. You need to understand that %RH doess not tell you the water content of the air only the % of moisture in the air at that temperature. Better to use dew points or grains of...
  7. Replies
    9
    Views
    293

    You have become sensitive to something in your...

    You have become sensitive to something in your home. Most people are not sensitive to a small amount of mold. But once your immune system starts reacting, you can be very uncomfortable.
    I do not...
  8. Replies
    35
    Views
    1,157

    Get a temp/%RH meter like the accurate from...

    Get a temp/%RH meter like the accurate from amzson or wal-mart.

    Regards TB
  9. The moment of truth has arrived. How does any...

    The moment of truth has arrived. How does any a/c control indoor %RH when there is low/no cooling loads? It is 70^RH, 85%RH, raining or overcast, provide 75^F, 50%RH with 4 occupants adding 2 Lbs....
  10. Replies
    35
    Views
    1,157

    What are the supply/return temps/rhs while the...

    What are the supply/return temps/rhs while the unit runs?
    Regards tb
  11. Your whole house is high relative humidity,...

    Your whole house is high relative humidity, should be 50-55%RH during peak of the day cooling loads. If the system is R22, your condenser/cooling coil pressures sound good. Confirm that your suction...
  12. Replies
    17
    Views
    702

    So interesting. Homes leak air during high winds...

    So interesting. Homes leak air during high winds like +10 mph. Most get an air change in 4-5 hours during high winds. Yet, during calm winds and moderate temps, the air change rate drops to an air...
  13. Replies
    2
    Views
    169

    Close the supplies in the unused/cold spaces. ...

    Close the supplies in the unused/cold spaces. You are dependent on the undercut of the door or leaving the door open to get warm air back to the a/c. Feel the velocity of the air passing under the...
  14. Replies
    12
    Views
    349

    Slowing the fan will raise the indoor temp and...

    Slowing the fan will raise the indoor temp and lower the %RH. 78^F,52%RH is good. Perfect may be 76^F, 50%RH for some. This easy with high outdoor temps. The fun starts with cool wet days and...
  15. Replies
    17
    Views
    702

    Yes, you need supplemental dehumidification, but...

    Yes, you need supplemental dehumidification, but you should setup the a/c to remove a significant portion of the moisture during high cooling loads. With a dehumidifier in the basement, set the dehu...
  16. You need a skilled tech. The hot gas from a...

    You need a skilled tech. The hot gas from a properly charged heat pump compressor is +180^F into the desuperheater. It comes out much cooler and goes on to the outside condenser. Turn off the water...
  17. Any fresh air ventilation to comply FL's new code...

    Any fresh air ventilation to comply FL's new code concerning ventilation?
    The good FL homes are air tight enough that they do not get a fresh air in less than a day during calm winds. ASHRAE ...
  18. Replies
    7
    Views
    315

    Curious, if you are building a high quality home,...

    Curious, if you are building a high quality home, any thoughts about doing indoor air quality fresh air ventilation humidity control for the lower levels of the home during low/no cooling loads? All...
  19. Try running in the fan "on" low over night. We...

    Try running in the fan "on" low over night. We had a In Gr speed that had a cold lower level that was much colder than the upper level. Although not perfect, much better.
    The heat pump overcools...
  20. Keep the humidity

    Keep the humidity <50%RH, good. Look for a wet spot or check for moldy spots like under carpeting or behind wall covering. Check you %RH meter against some known condition.
    Mold also can grow in...
  21. Not to worry. It is complicated. Air tight...

    Not to worry. It is complicated. Air tight homes with many occupants can be high humidity from the occupants during low/no cooling loads because of the moisture from the occupants. Homes that get...
  22. Most important is the cooling coil temperature....

    Most important is the cooling coil temperature. You need a <50^F coil temperature to get a 55^F dew point which is 75^F, 50%RH. This is possible with any type of metering device. You need a good...
  23. Homes need a fresh air change in 4-5 hours. ...

    Homes need a fresh air change in 4-5 hours. During calm winds and moderate temps, most home do not get enough fresh air and require mechanical fresh air. When the outdoor dew points are +55-70^F,...
  24. I would include a heavy duty high effiecency dehu...

    I would include a heavy duty high effiecency dehu like a Santa Fe Compact in the basement space to keep the space from getting musty. It keep the entire home dry is the door is open to the rest of...
  25. Replies
    3
    Views
    226

    The idea is to have a fresh air change in 4-5...

    The idea is to have a fresh air change in 4-5 hours when the home is occupied. You must estimate the amount of fresh air you are getting, figure the total volume of the home including basement, and...
Results 1 to 25 of 500
Page 1 of 20 1 2 3 4
Comfortech Show Promo Image

Related Forums

Plumbing Talks | Contractor Magazine
Forums | Electrical Construction & Maintenance (EC&M) Magazine
Comfortech365 Virtual Event