Home Forums Heating and Cooling Need advice on a new central air init 1300 sq. ft.

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    Jimigunne
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    I plan to replace a broken down central ac system in my home soon. It was broken down except for heat when we moved in 10 yrs ago. We have used window acs in every room. The house is 1300 sq. Ft. It was built in about 1975. So the walls are 1975 standards for insulation. It has convenional 2×4 and sheetrock construction. There are fiberglass batts throughout, but am sure the R-value of the walls is poor by modern construction standards. Also, the windows are only cheap single-glazed ones. The house is built on a slab. I spent some time on hvac forums, and i think Carrier is the brand to go with. The inside coil i suspect is probably ok. So, can someone give me an idea what size unit i need? And what SEER should I get. I cant go all out, money is no object for some super-SEER unit….but need a unit that will lower our bill, which is always around 300.00 in the summer months. Whats the usual SEER these days? 13? It gets as high as 108 on the hottest days of the summer here! Requires some serious cooling! Thanks!

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