What ton ac unit needed for a 2700 square foot split level home 2 or 2.5 ton we had an old 2 ton and had it replaced with a 2.5 ton one.?

WoW, I have a 2.5 ton unit for my 1,100 sq. ft home in Florida. I think you are way underpowered. They say 1 ton for every 500 square feet.

The answer given is typical, common, and usually incorrect. Many people get dramatically over-powered units that ends up short-cycling and thus not removing humidity properly, and uses more electricity than necessary...plus costs more upfront.

Here are links to two Excellent, engineering/scientific based articles on how to PROPERLY size your A/C units.

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

http://www.fsec.ucf.edu/en/publications/html/FSEC-PF-289-95/