Results 1 to 7 of 7

Thread: New Trane XV18 - room temperature questions

  1. #1
    Join Date
    May 2009
    Posts
    77
    Post Likes

    New Trane XV18 - room temperature questions

    Old system was 2001 Rheem 12 SEER with a Honeywell programmable thermostat, set to 77F when we're home. New system is Trane XV18 set to 77F and 50%RH, actual RH is between 46% and 48%. System is running almost all the time, which is to be expected.
    The rooms feel much colder even though the temperature is the same, and we've been raising the temperature to 79F.
    Is this due to constant air flow and lower humidity, or does the thermostat need to be calibrated for temperature?

  2. #2
    Join Date
    Nov 2004
    Location
    SW FL
    Posts
    11,209
    Post Likes
    Quote Originally Posted by rick66 View Post
    Old system was 2001 Rheem 12 SEER with a Honeywell programmable thermostat, set to 77F when we're home. New system is Trane XV18 set to 77F and 50%RH,
    actual RH is between 46% and 48%.

    System is running almost all the time, which is to be expected.
    The rooms feel much colder even though the temperature is the same, and we've been raising the temperature to 79F.
    Is this due to constant air flow and lower humidity,
    or does the thermostat need to be calibrated for temperature?
    Check your % R.H. with hygrometer that can be calibrated.

    AcuRite 1083M Pro
    _____________

    https://www.weathershack.com/product...te-01083m.html
    Designer Dan __ It's Not Rocket Science, But It is SCIENCE with Some Art. _ _ KEEP IT SIMPLE & SINCERE ___ __ www.mysimplifiedhvac.com ___ __ Define the Building Envelope & Perform a Detailed Load Calc: It's ALL About Windows & Make-up Air Requirements. Know Your Equipment Capabilities

  3. #3
    Join Date
    Jan 2004
    Location
    PA
    Posts
    80,327
    Post Likes
    Lower RH. A 2% drop in RH can make a room feel much cooler than your use to.
    Contractor locator map

    How-to-apply-for-Professional

    How many times must one fix something before it is fixed?

  4. #4
    Join Date
    May 2009
    Posts
    77
    Post Likes
    Thread Starter
    Quote Originally Posted by beenthere View Post
    Lower RH. A 2% drop in RH can make a room feel much cooler than your use to.
    That's good to know, raising the temperature can only help with electric bills. What's the chance that the thermostat needs to be calibrated for temperature? I'm assuming it's unlikely.

  5. #5
    Join Date
    Aug 2002
    Location
    Southold, NY
    Posts
    32,925
    Post Likes
    Forget the #'s on the stat. Just find where your comfortable.

  6. Likes jeffpwv liked this post.
  7. #6
    Join Date
    Aug 2009
    Location
    Beatrice, NE
    Posts
    14,286
    Post Likes
    You have to remember that your old stat may not have been accurately calibrated, it may have been off several degrees. Add to that better humidity control and near constant air flow and you can feel comfortable at a warmer temperature. Just adjust till you are comfortable and enjoy a good system.

  8. #7
    Join Date
    Jan 2004
    Location
    PA
    Posts
    80,327
    Post Likes
    While every so often a new digital stat will be out of calibration. Fairly far a few between.

    What you might want to try. Is raise the set temp 1 degree and see how it feels to you in a day or two. Still too cool feeling after a day or two, raise set temp another degree, repeat until your comfortable.

    If you decide to check accuracy of it, check it against two other calibrated thermometers placed on top Of the thermostat,
    Contractor locator map

    How-to-apply-for-Professional

    How many times must one fix something before it is fixed?

Tags for this Thread

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •