Page 1 of 2 12 LastLast
Results 1 to 13 of 24
  1. #1
    Join Date
    Mar 2008
    Posts
    6

    Question Texas: Options for cooling just bedroom at night

    2200 sq ft, 1 story home in Dallas, TX. Built in 1950's. 5 ton AC, Janitrol 10 SEER. New American Standard variable speed, 2 stage 80% furnace. We've had a small window AC that we (empty nesters) have used past 2-3 summers for bedroom at night, setting thermostat on main AC at 85. Both of us work during the day, when we also have the AC set at 85. Thus, AC is on for a couple of hours in am and then in the evening. (In spring and fall we use whole house attic fan to pull in outside cool air.)

    It seems to make a lot of sense not to cool the entire house at night, but the current arrangement just is not satisfactory. The window AC is noisy and we're concerned about safety (window faces back yard, making easy entry for a burglar).
    We have a very small 1/2 bath off of our bedroom, with a window that is too small (20" w X 36" high for any window AC unit that I've ever seen.
    Are there other reasonably priced, efficient options we could consider to cool just our bedroom at night?

  2. #2
    Join Date
    Mar 2005
    Location
    burlington county n.j.
    Posts
    9,741
    perfect place for a mini-split.

  3. #3
    Join Date
    Mar 2004
    Location
    Grottoes VA
    Posts
    5,856
    Quote Originally Posted by t527ed View Post
    perfect place for a mini-split.
    I agree
    Karst means cave. So, I search for caves.

  4. #4
    Join Date
    Jan 2004
    Location
    Lancaster PA
    Posts
    67,935
    Depends on the definition of reasonably priced.

    If your in an area that you also use heat. Then a mini split heat pump would be a great choice. You don't have to heat the entire house at night time either then.
    Contractor locator map

    How-to-apply-for-Professional

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

  5. #5
    Join Date
    Mar 2008
    Posts
    6

    mini-splits and reasonably priced

    I'll have to learn about mini-splits? I guess reasonably priced could mean a 5 yr payback, maybe less?

  6. #6
    Join Date
    May 2006
    Location
    Dallas,tx
    Posts
    302
    Quote Originally Posted by Billss View Post
    I'll have to learn about mini-splits? I guess reasonably priced could mean a 5 yr payback, maybe less?
    Maybe less

  7. #7
    Join Date
    May 2007
    Location
    Naples, Fl
    Posts
    889
    Quote Originally Posted by Billss View Post
    I'll have to learn about mini-splits? I guess reasonably priced could mean a 5 yr payback, maybe less?
    What equation would you use to factor B&E when calculating payback?

  8. #8
    Join Date
    Mar 2008
    Posts
    6

    Using mini-split as a "booster" for main AC?

    If we install a 9000 btu mini-split (Sanyo 16 SEER, variable speed) for our 200 sq ft bedroom here in Dallas Tx, can we use it as a booster for our main AC (Janitrol 10 SEER)? That is, on the evenings and weekends when we want to cool the entire house, should we leave the mini-split running. Since its more efficient than the main AC, it seems to me (I'm relatively clueless about these things, having heard of mini-splits for the first time this morning) that keeping the mini-split on would help cool the house and make the main AC run less and therefore the cost of cooling would be less.
    According to this reasoning, it might even make sense to get a 12000 btu mini-split (which costs ~10% more than the 9000 btu). The Sanyo is variable speed, so that when we are using it alone at night, it could run at the lower speed. Then, when we are using the main AC, the booster effect from the mini-split would be even greater. I'm I thinking about this is a screwy way?

  9. #9
    Join Date
    Jan 2007
    Location
    N.E. Ok.
    Posts
    1,369
    I would size the mini-split for bdr. This would be it's intended purpose. Oversizing would be uncomfortable.

  10. #10
    Join Date
    Jan 2006
    Location
    Hangin out with you losers
    Posts
    1,043
    It is very common for people to install a mid sized min split on the second floor and use it to cool the entire second floor.
    We install Mr. Slim and have had great luck
    We even removed the return air from one house and used it as a laundry shoot because the new unit was more then capabale for the load.
    I remember my first day,It was fun!

  11. #11
    Join Date
    Sep 2005
    Location
    Texas
    Posts
    2,793
    Quote Originally Posted by Billss View Post
    2200 sq ft, 1 story home in Dallas, TX. Built in 1950's. 5 ton AC, Janitrol 10 SEER. New American Standard variable speed, 2 stage 80% furnace. We've had a small window AC that we (empty nesters) have used past 2-3 summers for bedroom at night, setting thermostat on main AC at 85. Both of us work during the day, when we also have the AC set at 85. Thus, AC is on for a couple of hours in am and then in the evening. (In spring and fall we use whole house attic fan to pull in outside cool air.)

    It seems to make a lot of sense not to cool the entire house at night, but the current arrangement just is not satisfactory. The window AC is noisy and we're concerned about safety (window faces back yard, making easy entry for a burglar).
    We have a very small 1/2 bath off of our bedroom, with a window that is too small (20" w X 36" high for any window AC unit that I've ever seen.
    Are there other reasonably priced, efficient options we could consider to cool just our bedroom at night?



    I actually have a mitsubishi mini split that was installed for a period of 6 months as a temporary solution and I'd be willing to make you a sweet deal on it

  12. #12
    Join Date
    Dec 2002
    Location
    Toledo, Ohio, United States
    Posts
    12,910
    Twilli got an ex wife Twilli can send you
    No Heat No Cool You need Action Fast

  13. #13
    Join Date
    Jan 2007
    Location
    N.E. Ok.
    Posts
    1,369
    Quote Originally Posted by twilli3967 View Post
    Twilli got an ex wife Twilli can send you
    What happened, they send her back for insufficient postage

    Quote Originally Posted by air2spare View Post
    I actually have a mitsubishi mini split that was installed for a period of 6 months as a temporary solution and I'd be willing to make you a sweet deal on it
    Bump this for the ho, sounds sweet to me.

Page 1 of 2 12 LastLast

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •  
Comfortech Show Promo Image

Related Forums

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