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Old 08-06-2012, 05:48 PM   #1
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We are adding 720 sq ft to our house. We will now have 2237 sq ft. Our question is, should we get 1, 5 ton unit or 1, 2 ton unit for the addition and 1, 3 ton unit for the existing house. Also, what is the best A/C brand (least maintenance, last the longest, cools the best)?

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Old 08-06-2012, 06:09 PM   #2
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2 tons sounds bit big for a little 720 sq ft addition, unless your doing 2x4 walls, and only R19 insulation in the attic, or have a lot of glass.

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Old 08-06-2012, 07:03 PM   #3
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1 large system vs 2 smaller systems realy would depend on house lay out. Have you had any bids? If so what do they think (ask them why see if it makes sense)? First guess 2 units would cost more to install and cost more to operate, but that depens on many things.
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