Does crawlspace encapsulation qualify for the Residential Energy Credits?

I completed a crawlspace encapsulation project in my home. Cost was $4000. 
This completely encapsulated the crawlspace with 36mil reinforced poly fiber all across the ground and up the walls, creating a vapor barrier. 
As promised, this has *significantly* improved the efficiency of my HVAC system since installation. 
Is this deductible in accordance with the Home Energy Credits section?