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  1. #1
    Join Date
    Nov 2004
    Location
    Atlanta, Ga. burbs
    Posts
    281
    I've talked with my HVAC guy on the phone today and asked him some questions some of you posed to me. Need your opinion.

    Room: SunRoom
    Goal: Enjoy year round
    Location: Burbs in Atlanta
    Estimated tonnage: 1 ton required by HVAC guy (I agree)
    Brand he suggests: Fedders (which I am okay with)

    Asked him if the mini-split has a backup heat source and he said no. But he said the heat pump is good to any temperature even 0 degrees. Also, said he has never had a complaint in the winter, and the room is small and it should be fine.

    Now, if I spent the kind of bucks on this and it does not do a great job...my wife will kick me in the you know what.

    Does all of this make sense?

    Thanks-

  2. #2
    Join Date
    Jun 2004
    Location
    Maryland's Eastern Shore
    Posts
    892
    What is your average winter temps and what is the coldest temp of the year???

  3. #3
    Join Date
    Nov 2004
    Location
    Atlanta, Ga. burbs
    Posts
    281
    November: Average Low 42F
    December: Average Low 35F
    January : Average Low 33F
    February: Average Low 36F
    March : Average Low 42F

    However: The coldest I ever saw it was 0 degrees in the 60's (unusual) and sometimes it will get into the teens for a week or 10 days in Dec. or Jan.

    Atlanta's temperature is mild compared to most other colder US cities.




  4. #4
    Join Date
    May 2000
    Location
    Indianapolis, IN, USA
    Posts
    34,587
    Heat output at 32 will be minimal. If you want to use this room in cool weather, you will need baseboard electric or some other method of backup as the heat pump cuts out.

    I usually suggest a PTHP, like the GE 5500, as it can have up to 5kw backup. http://www.zoneline.com


  5. #5
    Join Date
    Nov 2004
    Location
    Atlanta, Ga. burbs
    Posts
    281

    This is probably a dumb question...But I'm a HO

    So, If were to tell the HVAC guy to install the PTAC Ge 5500 series w/heat strip:

    Don't laugh:

    But who cuts the hole in the house for the unit? Would he do this or do I hire a carpenter? Also the room is finished.
    And the outside is vinyl siding.


    Thanks cause I really don't know the answer.

  6. #6
    Join Date
    Feb 2003
    Location
    northwest of Atlanta, for now
    Posts
    273

    design

    Design for Atlanta is 23 degrees.

    we had a time a few weeks ago that it didn't get above freezing for about 30 hours.

    One ton with an electric BB should be okay.

    What direction does the longest side of the sunroom face?


  7. #7
    Join Date
    May 2000
    Location
    Indianapolis, IN, USA
    Posts
    34,587
    We have an installer who can trim in a PTHP or we sub it out to a remodeling contractor. Since we get COLD, this is the way we go, no minis.

  8. #8
    Join Date
    Feb 2003
    Posts
    1,996
    Mitsubishi makes a mini with strip heat. Sanyo used to make a unit with a nat gas/LP ribbon burner in the outside condenser unit to keep the heat pump working below freezing.

  9. #9
    Join Date
    Jun 2004
    Location
    Maryland's Eastern Shore
    Posts
    892
    Really, an outdoor coil heater??? I'd like to see that... Really, a mini-split would be okay with baseboard as a back-up heat source...

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