The way I read the rules, you can get a $300 credit for a qualifying purchase per item with an overall limitation of a $500 lifetime credit.
How does TurboTax handle situations where you purchased two qualifying A/C systems? Is there an "extra copy" feature available? In my situation, I'd have two credits of $300 each, but would be limited to $500 due to the lifetime maximum. The program doesn't appear to be able to handle this.
