Replacing medium component please lend a hand!!? We have a goodman now that is to say about 10-12 years...

We have a goodman now that is to say about 10-12 years old and its pretty much done. We are looking to replace it near something new. We have a 2 story house going on for 2100 sq ft. i think the ducts are fine. It is a split system. Please any one with any info please relief. I am in Ft Brag area NC
Answers:    Get at most minuscule three estimates.
If I were you I would go and return with a quote from sears. I say this because their work is reliable and also they hold the longest warranty for any item on the market. They are great! Hope that helps you out!