Search:

Type: Posts; User: teddy bear

Page 1 of 20 1 2 3 4

Search: Search took 0.06 seconds.

  1. The carrier greenspeed is a 3 speed based on the...

    The carrier greenspeed is a 3 speed based on the monitoring that I have done. Expensive and engineering marvels are my comments. They do a better job of attempting humidity control verses the single...
  2. Thread: Need HRV ??

    by teddy bear
    Replies
    6
    Views
    162

    Let me give you a little insight into what you...

    Let me give you a little insight into what you need.
    You need a fresh air change when the home is occupied. This is about 80 cfm with a 2,000 sqft. home. You need a home air tight enough to not...
  3. Thread: Need HRV ??

    by teddy bear
    Replies
    6
    Views
    162

    It is complicated. You need make-up air for the...

    It is complicated. You need make-up air for the exhaust devices. An HRV exhaust as much air as it brings in and does nothing for kitchen hood or the clothes drier. If the home is occupied 24/7,...
  4. Thread: Need HRV ??

    by teddy bear
    Replies
    6
    Views
    162

    Homes respond to all the pressures we put the...

    Homes respond to all the pressures we put the surfaces of the home under. On a calm summer day, there is little pressure on the home and very little air enters or leaves unless we operate a fan.
    On...
  5. Replies
    5
    Views
    226

    Fresh air ventilation? Regards TB

    Fresh air ventilation?
    Regards TB
  6. Thread: Need HRV ??

    by teddy bear
    Replies
    6
    Views
    162

    Where in God's green grass earth is this home?...

    Where in God's green grass earth is this home? Tell us about the kitchen hood cfm exhaust.

    Regards TB
  7. Replies
    16
    Views
    2,062

    I do not have the phone number. Justin does, 800...

    I do not have the phone number. Justin does, 800 533 7533, ext. 0 ask for Justin.
  8. Replies
    3
    Views
    169

    When you manually override the DEH 3000 control...

    When you manually override the DEH 3000 control it will hold that setting until your next night or day schedule change.



    Example: if my schedule is setup for 30 30 during my morning schedule...
  9. Replies
    6
    Views
    322

    I did not see the drawing until now. This will...

    I did not see the drawing until now. This will work. The room with supply side of the dehu will be warmer by 3-4^F. Usually this desired as most basements are cool. Warming also decreases the...
  10. Replies
    6
    Views
    322

    Ultra-Aire is the remote control with duct...

    Ultra-Aire is the remote control with duct collars model. The Santa Fe is the do it yourself version. The Ultra-Aire is the first class unit with vent control, DEH3000. You may not need the remote...
  11. Replies
    6
    Views
    322

    I would split the dehu supply to the bedroom and...

    I would split the dehu supply to the bedroom and open part with a single return from the open part to the dehumidifier. For the sake of good indoor air quality include a 6" fresh air in let to the...
  12. Replies
    3
    Views
    169

    I am researching the details of you question and...

    I am researching the details of you question and will follow up shortly.
    RegardsTB
  13. Replies
    10
    Views
    440

    You should share the cooling/heating ducts. The...

    You should share the cooling/heating ducts. The dehu moves much less air then the heat/cooling systems. The blowers in the Ultra-Aire is strong enough to operate along with the conditioning system....
  14. Replies
    6
    Views
    217

    The simplest way to control a dehumidifier is to...

    The simplest way to control a dehumidifier is to use a simple %RH humidistat and a "on/off" ventilation switch. Set the %RH you want usually 50%RH. Operate the fresh air ventilation when the home is...
  15. Replies
    6
    Views
    217

    No wonder the Ultra-Aire was +$300, it has a $300...

    No wonder the Ultra-Aire was +$300, it has a $300 controller.
    Do an independent return and it can be next to the a/c return. The Ultra-Aire controller will work on the Honeywell. The advantage...
  16. Replies
    10
    Views
    440

    This could be a mess. Berm homes need fresh air...

    This could be a mess. Berm homes need fresh air ventilation to purge indoor pollutants and renew oxygen. Figure an air change in 4-5 hours as a minimum when the home is occupied. In green grass...
  17. Replies
    18
    Views
    4,172

    Great. I hope you got a good contractor. It is...

    Great. I hope you got a good contractor. It is in his hands. A fresh air change in 4-5 hours when occupied and maintain 50%RH should keep you comfortable and the indoor air quality high.
    Keep us...
  18. Replies
    6
    Views
    217

    The Honeywell will work. I like the Ultra-Aire...

    The Honeywell will work. I like the Ultra-Aire more but would not pay that much more. The Honeywell blower is big enough. Go for it.
    Keep us posted.
    Regards TB
  19. Replies
    1
    Views
    148

    Gravity backdraft damper is a good idea. A 4"...

    Gravity backdraft damper is a good idea.
    A 4" supply with a damper to adjust flow to the attic is good.
    No reason to operate the a/c blower when the dehu is operating.
    When the a/c operates, the...
  20. I meant that a higher rate of fresh air requires...

    I meant that a higher rate of fresh air requires a slightly larger dehu or you may exceed the 50%RH level.
    Regards TB
  21. Most take the short cut of sucking from the...

    Most take the short cut of sucking from the return and putting dry air back into the return, making it necessary to operate the a/c fan to dehumidify. Not ideal, a separate return from the home to...
  22. I feel that the 70 pint units will provide 50%RH...

    I feel that the 70 pint units will provide 50%RH 95% of the time. Occasional +50%RH is not the end of the world. Also the rate of fresh air change could make a slight difference.
    The Honeywell...
  23. Set the %RH controller up to 55%RH. No need to...

    Set the %RH controller up to 55%RH. No need to operate the dehu below that setting in a cool basement.
    A small 4" supply duct to the basement space from the whole house dehu will eliminate the need...
  24. The main difference is in the controllers. The...

    The main difference is in the controllers. The UA 90H controller is the DEH3000 and is optional. The benefit of the DEH is to provide fresh air ventilation on a routinely occupancy schedule. If...
  25. During cold weather with low outside dew points,...

    During cold weather with low outside dew points, dry outdoor air is the most practical way to keep a home dry. Dehumidifiers are unable to get a home below a 35^F dew point to avoid condensation on...
  26. Replies
    7
    Views
    354

    You can make the Santa Fe work and they are good...

    You can make the Santa Fe work and they are good units. You need to add duct connections, tees, and a fresh air inlet for ideal use. Also consider being able to circulate the dry air throughout...
  27. Replies
    17
    Views
    741

    The best suggestion is right here. However,...

    The best suggestion is right here.
    However, you a/c unit is bigger than is ideal. Unfortunately, a properly sized unit will not be able to maintain 50%RH when there is low/no cooling loads, the...
  28. Replies
    2
    Views
    207

    %RH meter vary a lot. But even at 40%RH, you are...

    %RH meter vary a lot. But even at 40%RH, you are doing good. To check your %RH meter, place the meter in a zip lock bag with cup of wet salt. This will generate 75%RH. Note the +- difference on...
  29. No change in moisture content with source of...

    No change in moisture content with source of heat. But as the temperature of is increased, the %RH declines. This is because warm air holds much more moisture.
    Regards TB
  30. Replies
    7
    Views
    354

    Well we agree that moisture the soil. During...

    Well we agree that moisture the soil. During times of the year when the outdoor dew point is <40^F, outside air dries you home/crawlspace via the vents. There are 2-3 lbs. of moisture coming from...
  31. Replies
    10
    Views
    493

    Most homes will leak enough to support a bath fan...

    Most homes will leak enough to support a bath fan or clothes drier. I have tested this repeatedly. If not, an air tight home could kill you. Also the amount of air leakage can be confirmed by...
  32. Keep us posted. Smaller is better, but for real...

    Keep us posted. Smaller is better, but for real control of indoor %RH, a small whole house dehumidifier is necessary. I have a 4 ton on 2,500 sqft. home in FL. During high cooling loads, I get...
  33. Replies
    7
    Views
    354

    Because of natural pressures on the home from...

    Because of natural pressures on the home from wind and clothes drier/bathfans/kitchen hoods, crawlspace air will be sucked into the home.
    With mechanical fresh air and dry air supply to the crawl,...
  34. Replies
    18
    Views
    4,172

    The Camfilfarr are reasonable except the %RH...

    The Camfilfarr are reasonable except the %RH recommendation of +70%RH. Most suggest max of 60%RH as a max for extended time. A/c cycle of +80% RH in the supply duct is exceptable but should dried...
  35. There are several ways to install a whole house...

    There are several ways to install a whole house ventilating dehumidifier. Best if the dehumidifier can provide fresh air and dehumidify without needing the air handler fan to operate. If the home...
  36. Replies
    10
    Views
    493

    Measure the temp/%RH in the space. Also it is...

    Measure the temp/%RH in the space. Also it is important to have a fresh air change in 4-5 hours to purge the indoor pollutants and renew oxygen. How can you tell if you are getting adequate air...
  37. Wind and exhaust devices create indoor negative...

    Wind and exhaust devices create indoor negative pressure that sucks in outside air. Adding filtered outside fresh air and filtering inside air with the highest quality air filters is marginal...
  38. Using the outdoor dry air ,

    Using the outdoor dry air ,<30^F dew point< for humidity control is cheaper than operating a dehu. Also the dehu slows at removing moisture at low %RH. Outside air has a lower dew point than the dehu...
  39. Homes need a fresh air change in 4-5 hours to...

    Homes need a fresh air change in 4-5 hours to purge indoor pollutants and renew oxygen. This could be about 80 cfm of fresh air The wind blows an average of 7 mph. High winds put enough pressure on...
  40. The three brands you are researching properly...

    The three brands you are researching properly sized will maintain <50%RH throughout your home. I suggest that you include the crawlspace as part of the humidity control strategy to avoid growing any...
  41. All good questions. Is the home occupied 24/7 or...

    All good questions. Is the home occupied 24/7 or do you have a typical occupancy schedule? How many occupants and size of the home. Basement/crawlspace/slab on grade. Carpets on concrete?
    Most...
  42. Replies
    9
    Views
    278

    What is you climate and where are located? The...

    What is you climate and where are located? The configuration of you building and location in it?
    Regards TB
  43. Replies
    7
    Views
    354

    Exposed earth looks dry but is supplying several...

    Exposed earth looks dry but is supplying several lbs. of moisture per hour. Also open vents are wetting or drying depending on the moisture in the outside air.
    The sure way to control a...
  44. Replies
    7
    Views
    346

    If you can identify that warm air blowing to the...

    If you can identify that warm air blowing to the outside back through the supply, a back drafty is suggested. Home that are this air tight need mechanical fresh air ventilation whenever occupied....
  45. Replies
    7
    Views
    346

    Moisture on windows? A 1" sweat band is that does...

    Moisture on windows? A 1" sweat band is that does not drip would be max. Dripping windows, operate HRV until the windows stop dripping. 35%RH could be a good number. Avoid deep t-stat setback on...
  46. Replies
    7
    Views
    346

    Your unit has a good air filter. Most suggest...

    Your unit has a good air filter. Most suggest operating your air handler on the Low speed fan for complete mixing and circulation when the HRV is operating. Most suggest ventilating when the home is...
  47. Most dust that enters your home never makes it to...

    Most dust that enters your home never makes it to the air filter in your air handler. Instead is settles on the horizontal surfaces of the home. A good vac is more important than the air filter. ...
  48. Replies
    31
    Views
    857

    Netamo for the money is great gadget to...

    Netamo for the money is great gadget to understand air change rates during actual living and weather conditions. The sensors are not the greatest, but for the money , fantastic. Good data logging...
  49. This is tricky business. Where is the strip heat...

    This is tricky business. Where is the strip heat located in relation to the cooling coil?
    Regards TB
  50. Replies
    7
    Views
    427

    This a plumbing problem. The heat exchanger has...

    This a plumbing problem. The heat exchanger has a drip rail that is connect to the drain tube. The drip rail should be located under the center of the heat exchanger. Also the tube can be air...
Results 1 to 50 of 1000
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