I am trying to claim the home energy tax credit. I installed a new high efficiency furnace and AC, however, there is no place to put the cost for the AC, only the furnace

[jacobhartmann1]

There is only listed
1. Exterior Doors
2. Exterior Windows
3. Metal or asphalt roof
4. Insualtion material or system
5. Enery-efficient building property
6. Advances main air circulating fan used in a natural gas, propane, or oil furnace
7.Furnaces and hot water boilers powered by
natural gas, propane or oil 

8. Solar electric costs 
9. Solar water heating costs
10. Small wind energy property
11. Geothermal heat pump property
12. Biomass fuel property 
13. Fuel cell property costs (for your main home) 
14. Kilowatt capacity of fuel cell property

[DMarkM1]

The correct category for the new AC is "Energy Efficient Building Property."  You can click the "Learn More" link to see the qualifications for each category.  

As for the Central AC:  A central air conditioner that achieves the highest efficiency tier that has been established by the CEE as in effect on January 1, 2009.

• Split system central air conditioner that achieves the highest efficiency CEE tier as of January 1, 2009 (16 SEER; 13 EER)
• Packaged central air conditioner that achieves the highest efficiency CEE tier as of January 1, 2009 (14 SEER; 12 EER)
• Split system electric heat pump that achieves the highest efficiency CEE tier as of January 1, 2009 (8.5 HSPF; 12.5 EER; 15 SEER)
• Packaged electric heat pump that achieves the highest efficiency CEE tier as of January 1, 2009 (8.0 HSPF; 12.0 EER; 14 SEER)