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    rayjay1953's Avatar
    rayjay1953 Posts: 4, Reputation: 1
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    #1

    Apr 26, 2008, 02:29 PM
    2 heating and a/c systems
    I have added 600 sf. To a 1500 sf. House and need to upgrade my heat and a/c. I only have a 2.5 ton unit and it is only three years old. The repairman says it is best to go with a second 2.5 ton unit to take care of the new area. Is this the best way.
    hvac1000's Avatar
    hvac1000 Posts: 14,540, Reputation: 435
    Heating & Air Conditioning Expert
    		  
    #2

    Apr 26, 2008, 04:43 PM
    2.5 ton for 600 square foot is WAY oversize for most locations. Where do you live (state).
    rayjay1953's Avatar
    rayjay1953 Posts: 4, Reputation: 1
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    #3

    Apr 27, 2008, 05:07 PM
    Houston, tx. We would be splitting up the house with the second unit not just the 600 sf.
    hvac1000's Avatar
    hvac1000 Posts: 14,540, Reputation: 435
    Heating & Air Conditioning Expert
    		  
    #4

    Apr 27, 2008, 07:37 PM
    That's 5 ton of cooling in 2,100 square foot. Have a real professional do a manual "J " on the entire structure to see exactly what you need. If to large a unit the humidity will not be drawn out of the air and it will be cold and clammy.
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