Page 1 of 2 12 LastLast
Results 1 to 10 of 13
  1. #1
    Bronze
    Join Date
    May 2010
    Posts
    582
    Post Thanks / Like

    Default Running multiple Air-conditioning units

    I've always been under the impression that it is more energy efficient to run your heating or cooling system all day instead of turning it off.

    For those that use multiple split systems or central AC  do you leave it on all day, and at what temperature setting?  I'm not talking about extremes like the late great CC.

    If you don't mind adding, what are your typical energy cost per month? 

    Those that don't run their systems all day, does it affect your walls ( mold , pealing paint)

  2. #2
    I love Hillary!
    Join Date
    Dec 2016
    Posts
    1,549
    Post Thanks / Like

    Default

    I never turn it off, 72 degrees, even in the winter, keeps the humidity out, around 450 U.S dollars give or take

  3. Likes RG84 liked this post
  4. #3
    Gold
    Join Date
    Apr 2014
    Posts
    6,689
    Post Thanks / Like

    Default

    The answer is it depends.

    Central AC versus AC in each or several rooms, at what temperature are you setting as a comfort temp. What is the starting temp of the space, do you wish to run the AC for the whole time you occupy the space to keep it cool or do you want the space to stay cooler longer when the AC is turned off?

    The structure of the electric bill is a factor here as over XXX kwh, the entire monthly consumption is charged at a higher rate, as opposed to a staggered billing amount as in other countries. How efficient your AC is plays an important part in how much electricity it uses. Eg. Inverter type or standard full tilt compressor.

    There is a definitive answer for your question. That answer is dependant on many variables that you have not quantified.

    I assume we are talking about usage here in the DR. I have yet to see a house or Apt with a duct system, so central AC is usually a nonstarter here. The first step is to install the most efficient AC units you can find and afford. 22 SEER inverter style as a minimum. All other considerations follow from here.

    Energy efficiency is not necessarily the same as cost effectiveness. 

  5. Likes sanpedrogringo liked this post
  6. #4
    Bronze
    Join Date
    May 2010
    Posts
    582
    Post Thanks / Like

    Default

    Quote Originally Posted by Cdn_Gringo View Post
    The answer is it depends.

    Central AC versus AC in each or several rooms, at what temperature are you setting as a comfort temp. What is the starting temp of the space, do you wish to run the AC for the whole time you occupy the space to keep it cool or do you want the space to stay cooler longer when the AC is turned off?

    The structure of the electric bill is a factor here as over XXX kwh, the entire monthly consumption is charged at a higher rate, as opposed to a staggered billing amount as in other countries. How efficient your AC is plays an important part in how much electricity it uses. Eg. Inverter type or standard full tilt compressor.

    There is a definitive answer for your question. That answer is dependant on many variables that you have not quantified.

    I assume we are talking about usage here in the DR. I have yet to see a house or Apt with a duct system, so central AC is usually a nonstarter here. The first step is to install the most efficient AC units you can find and afford. 22 SEER inverter style as a minimum. All other considerations follow from here.

    Energy efficiency is not necessarily the same as cost effectiveness. 


    Thanks for your reply, but I wasn't asking for a definitive answer. All I asked was for people to post if they leave their ACs on (spilt, central or window) full time or not. Also what settings? If you don't then does it affect your place.

    So if you give and answer to these question I would appreciate it, but don't over complicate things

    1) Do you run your AC all day and night
    2) Where do you set the temperature ( you can answer in Celsius or Fahrenheit)
    3)What are your monthly electric bills
    4) If you don't run your AC continuously, does it affect your walls?

    BTW, I've seen apartments and houses with central AC, not many but I've seen a few/

  7. #5
    Bronze
    Join Date
    Oct 2005
    Posts
    782
    Post Thanks / Like

    Default

    I have found that splits work better in the DR. You only cool what you need. If there is an area that you, that you don't use all the time. extra BR. set it at 24-25. Keeps the humid. down. If you like to spleep cool, Depends on how long you have lived here. set the temp to 20-21. The elect. cost depends on where you live.

  8. Likes RG84 liked this post
  9. #6
    Bronze
    Join Date
    Aug 2012
    Posts
    1,141
    Post Thanks / Like

    Default

    Quote Originally Posted by RG84 View Post
    I've always been under the impression that it is more energy efficient to run your heating or cooling system all day instead of turning it off.

    For those that use multiple split systems or central AC  do you leave it on all day, and at what temperature setting?  I'm not talking about extremes like the late great CC.

    If you don't mind adding, what are your typical energy cost per month? 

    Those that don't run their systems all day, does it affect your walls ( mold , pealing paint)
    I've wondered this myself, as there's definitely BTUs involved in cooling a room from 80*+ vs keeping it at a constant level.

  10. Likes RG84 liked this post
  11. #7
    Gold
    Join Date
    Nov 2002
    Posts
    5,366
    Post Thanks / Like

    Default

    I only switch them on when it's too hot. In the summer that means, from 11 am to 10 pm. No problems with humidity when not using them.

  12. Likes RG84 liked this post
  13. #8
    Bronze
    Join Date
    Oct 2005
    Posts
    782
    Post Thanks / Like

    Default

    Once you cool a area down. Like first or second floor, it will stay cool. If you are on the top floor or have a cement roof, you are out of luck. Thing hold heat and cold. I turn my a/c on in my BR at night. Sleep. 2nd flr. close the door, after I get up. Stays mostly cool during the day. Turn it on about 8 plus or minus. Works for me. If you on the top floor or under the roof. This doesn't work. A/C and a big fan is all I can suggest.

  14. Likes RG84 liked this post
  15. #9
    Silver
    Join Date
    Apr 2014
    Posts
    3,844
    Post Thanks / Like

    Default

    Quote Originally Posted by RG84 View Post
    I've always been under the impression that it is more energy efficient to run your heating or cooling system all day instead of turning it off.

    For those that use multiple split systems or central AC  do you leave it on all day, and at what temperature setting?  I'm not talking about extremes like the late great CC.

    If you don't mind adding, what are your typical energy cost per month? 

    Those that don't run their systems all day, does it affect your walls ( mold , pealing paint)
    Been living here almost 5 years now (minus a month) never lived anywhere on the island with air conditioning.

  16. Likes sanpedrogringo liked this post
  17. #10
    Bronze
    Join Date
    Nov 2016
    Posts
    797
    Post Thanks / Like

    Default

    This is actually a personal situation in my house. My wife hates AC and loves a warm room and when the AC is on she turns on a vaporizer to add humidity that the AC takes out but almost doubles the AC bill for the humidity... that get's taken out and added. I'm not a fan of AC but I need a fan blowing on me. My wife does not like the breeze while I do. What can I say or advise since I'm in a catch 22 concerning AC and electric bills. Other the our bills use to be very high.

    It took a few years to acclimate and it took a little self forcing and discomfort to do so. If we use AC it is set @ 38C with a fan on me and that is fine. (OK... so we sleep in different bedrooms but it works for us.) My wife turns on the ceiling fan and she is OK with that little air movement.

    Walls sweating? That's more about your construction then AC. We have never had a sweating wall or paint peeling. We do see wooden furniture change going from normal humidity to AC drying things out. Our walk in cloths closet is totally cedar lined and never had a mildew problem NOR anywhere in the house as we keep the air flowing. I must add that we have a very good housekeeper that loves the smell of choro and listol. (?)

    1st floor has 7 foot ceilings. 2nd floor has up to 20 feet. Guess which floor costs more? Some rooms have single glass and most have double. Some doors have a real weather strip around them with a threshold that seals the room and others you can blow smoke through.

    Estimating you elec. bill and how YOU manage your personal comfort is all up to you.

    Good Luck.

    BTY... we have 14 split AC units and very seldom... very seldom run any at all. Times and situations and we changed some over the last 20 years here.

  18. Likes oriole100, RG84 liked this post
Page 1 of 2 12 LastLast

Bookmarks

Posting Permissions

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