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  1. #1
    Join Date
    Apr 2003
    Location
    Northern Virginia, Fairfax County
    Posts
    641

    Question Duct-Free Split System for 480 sq ft Expansion?

    Does any HVAC manufacturer with sales in the mid-Atlantic region besides Carrier provide something like Carrier's Duct-Free Split System? Who? Web sites? Any capacities between 12,000 and 18,000 BTUH?

    The only equipment of this nature that I have found is Carrier's 40QNE or 40QNH indoor unit:
    http://www.commercial.carrier.com/co..._PRD32,00.html
    which matches up to the 38BK outdoor unit:
    http://www.commercial.carrier.com/co...PRD104,00.html

    These heat pump units come only in 0.8 and 1.0 nominal tons. Carrier's residential web pages show that such units are available but simply advise calling a dealer. I found the commercial pages by google chance.

    With such units, how would you take care of a bathroom and maybe a built-in closet space? This is for a bedroom area expansion, 480 sq ft that I described in a previous post:
    http://www.hvac-talk.com/vbb/showthread.php?t=171278

  2. #2
    Join Date
    Dec 2004
    Posts
    200
    Here you should be able to find a diamond dealer in your area
    http://www.mrslim.com/home.asp


    With the ceiling mounted unit i believe you can take a couple branch lines off for a bathroom or another seperate room
    http://www.mrslim.com/products/itemD...ProductID=1520

  3. #3
    Join Date
    Apr 2003
    Location
    Northern Virginia, Fairfax County
    Posts
    641
    Quote Originally Posted by filterchanger View Post
    Here you should be able to find a diamond dealer in your area
    http://www.mrslim.com/home.asp


    With the ceiling mounted unit i believe you can take a couple branch lines off for a bathroom or another seperate room
    http://www.mrslim.com/products/itemD...ProductID=1520
    And indeed you can take a couple branches. I verified this in the installation instructions. Two sizes available on two sides. That whole Mitsubishi Mr. Slim product line is very intriguing. Seems much more flexible than Carrier. Thanks much.

  4. #4
    Join Date
    Jan 2004
    Location
    Lancaster PA
    Posts
    66,818

  5. #5
    Join Date
    Apr 2003
    Location
    Northern Virginia, Fairfax County
    Posts
    641
    The "Inverter" technology in the Mitsubishi Mr. Slim line seems very unusual, or not unique. Does anybody else use anything like it to give such a wide range of BTU output?

    Also, the relatively small physical sizes of the units make me ask: how good is this design for humidity control and efficiency? They barely make the cut in SEER, but I don't know how to assess the other performance specs.

    If you are a dealer for both Mr. Slim and conventional split systems, do you favor Mr. Slim where the conventional splits can be installed as well?

    Many thanks for any comments.

  6. #6
    Join Date
    Sep 2006
    Posts
    1,253
    Quote Originally Posted by alinnova View Post
    The "Inverter" technology in the Mitsubishi Mr. Slim line seems very unusual, or not unique. Does anybody else use anything like it to give such a wide range of BTU output?

    Also, the relatively small physical sizes of the units make me ask: how good is this design for humidity control and efficiency? They barely make the cut in SEER, but I don't know how to assess the other performance specs.

    If you are a dealer for both Mr. Slim and conventional split systems, do you favor Mr. Slim where the conventional splits can be installed as well?

    Many thanks for any comments.
    Inverter technology is the direction things are going. There are many manufacturers using the technology and have ductless mini-splits. It is a well proven technology and can be very efficient. Fujitsu has some of the highest SEER ratings.

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