Adding central AC to first floor?

nancitaJune 29, 2012

Hi all,

We live in MA and recently bought a house. we are adding AC to the second floor, which was toally gutted. Lost the baseboards at the same time. Love that. Not done yet and we've had a couple of heat waves.

We did not do any AC on the first floor. Hoping that old warm air rises, cold air air falls will do something. But, I'm starting to think the second floor will have to really work to keep that floor cool.

What's the tinking of adding AC to the first floor?


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If you were only going to add AC to one floor, then the upper floor would be the best choice. Some cool air will fall to the first floor, but there is still going to be a significant (3-5 degrees?) variation in temperature.

If you have the funds, then add AC to the first floor.

    Bookmark   June 29, 2012 at 8:14PM
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It depends on what you do in the house too. Cooling the upstairs may not be the most efficient way to keep downstairs cool. If you use the whole house all the time, then if the upstairs keeps downstairs cool without overcooling upstairs, fine. If you spend little time upstairs or have to over cool the upstairs, you will save money in the long run with a downstairs system.

Too bad you had to sacrifice the baseboard heat. How many rooms are downstairs? Is there basement access under all the rooms?

    Bookmark   July 2, 2012 at 3:05PM
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There are three rooms plus a bathroom on the first floor. Yes, there is a basement below the first floor.
We were told the AC/heat system was better than baseboard? The baseboards got really trashed during rennovations.

    Bookmark   July 4, 2012 at 12:09PM
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What is sq ft of main floor and top floor?

How are you heating each floor?

Post back.


    Bookmark   July 5, 2012 at 8:49AM
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The floors are around 850 sq. ft. each. Gas heat.

    Bookmark   July 5, 2012 at 10:53AM
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u took out hot water/steam radiators upstairs. and have forced air heat/central air for upstairs now? how are you heating downstairs? do you have 2 systems?

    Bookmark   July 5, 2012 at 1:00PM
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No, it's some kind of hot water system. Can't remember the name.
First floor still has baseboards.

    Bookmark   July 5, 2012 at 5:43PM
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So just to be clear, you have no ductwork for AC either first floor or second floor?

Please clarify. You are not being specific on exactly what you have for heating either first or second floor.

Post back.


    Bookmark   July 5, 2012 at 5:54PM
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I am sorry I am not clear. Not exactly sure of the exact terms.
When we bought the house, it had baseboards throughout the house; hot water and gas.
When the second floor was gutted, they destroyed the baseboards and asked if we wanted some hydro something heat exchange that sends heat through the AC ducts that are being installed.

    Bookmark   July 5, 2012 at 6:11PM
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