I'm not 100% positive but I believe you should:
choose Federal Taxes
choose Deductions and Credits
choose Start or Update for Home Energy Credits
It says you can't claim Energy Star appliances, but I've seen other documentation that says you can. Click on Yes, then Continue
Answer 3 questions about your home
Enter what you paid for your central AC in the Energy-Efficient Building Property box and click continue
FYI The IRS Form 5695 instructions says your hvac system qualifies if it is "A central air conditioner that achieves the highest efficiency
tier that has been established by the CEE as in effect on January
1, 2009."
