Thread: How large a Cental Air conditioning unit do I need?
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Travis Jordan
 
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Default How large a Cental Air conditioning unit do I need?
wrote:
My house is about 2,000 Sq. Ft, in New Jersey. We have Vinyl Siding.
The contractor suggested a 2.5 ton unit (30,000 BTU) based on teh
Windows, size, etc.

Sounds like the contractor is guessing.
Have him/her perform a "Manual J" heat gain / loss calculation.

http://www.proctoreng.com/articles/bigger.html


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