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  1. #1
    Join Date
    Feb 2012
    Posts
    77

    Question About Humidity control

    Hi,
    The contractor who sold me a Rheem RAPMJEZ and RHKLM3821 air handler did not show up. This contractor told me i must have the 305 thermostat for humidity control. They have given me a new install date but keep blowing me off about giving it to me in writing, so I am on the verge of asking for a refund of my deposit.

    On that note, I asked another contractor for a quote in the same system. He said this system does not allow humidity control.

    My understanding was single stage systems don't do humidity control and 2 stage do but the first contractor insisted that the variable speed air handler controls humidity thru the 305 thermostat.

    Can anyone explain to me who is right?

    And if I don't need the 305 thermostat what is the point of buying this fancy thermostat?

    Thanks.

  2. #2
    Join Date
    Jan 2009
    Location
    Keokuk, IA
    Posts
    5,520
    The first contractor is right. http://www.rheem.com/documents/rhkl-...ication-sheets

    It has a Dehumidification on demand terminal that slow the blower usually by about 15-20% for better humidity removal. This works as well or better than two stage. THe best is both 2 stage and DOD.

    Ye,s you'll need the 300 series Thermost. I have the same White Rodger thermostat and like it. I set it to the highest point where I'm comfortable at around 45% RH, then set it to 48-50%RH and then allow it to overcool up to 3F to either remove more humidity or at least overcool so I'm at a constant comfort level. On hotter sunnier days it will run the fan at full speed. On cooler cloudy days and at night, it will overcool.

  3. #3
    Join Date
    Feb 2012
    Posts
    77

    Thanks!

    You have set my mind at ease.

  4. #4
    Join Date
    Jan 2009
    Location
    Keokuk, IA
    Posts
    5,520
    On a side note, this is the busy seaso and I'm also getting on of my system repalced. (I'm a facility manager, not an installer). It took 3 weeks to get me a bid (My system not broken and I'm not in a hurry) and 3-4 weeks leadtime for installation. To be expected.

  5. #5
    Join Date
    Jul 2001
    Location
    Anderson,SC
    Posts
    979
    Hot Chic,
    Can you post some more profile pic's?

    Thanks,
    Stud

  6. #6
    Join Date
    Feb 2012
    Posts
    77

    Hahaha

    Very funny, Stud.

  7. #7
    Join Date
    May 2000
    Location
    Indianapolis, IN, USA
    Posts
    33,907
    3 weeks out in Keokuk? Wow, we have time open this week! I had installers running cleans today.

  8. #8
    Join Date
    Aug 2010
    Location
    West Monroe, LA
    Posts
    1,529
    Quote Originally Posted by BaldLoonie View Post
    3 weeks out in Keokuk? Wow, we have time open this week! I had installers running cleans today.
    Amen, I have two installer teams that have got us caught up from being a week behind!!! Now I have 2 installs going in tomorrow with plenty of work but could still get it done but early next week!

  9. #9
    Join Date
    Jan 2009
    Location
    Keokuk, IA
    Posts
    5,520
    Ya, small town. He actually lets one of his best installers take vacation the 2nd week in June. I guess that's how you keep some of the best guys.

  10. #10
    Join Date
    May 2004
    Location
    south louisiana
    Posts
    3,139
    LOL @ stud..will more pics get her better answers
    or just make answering her questions more fun?
    The cure of the part should not be attempted without the cure of the whole. ~Plato

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