Latest update regarding HRTC
Goods and merchandise purchased before February 1, 2010 but not installed will qualify for the credit. However, only the portion of work performed by the contractor or a third party before February 1 will qualify for the credit, even if you’ve already paid for it.
If you have not reached the limit of $10,000.00 and planning to do more work of endurable value, by all means, go buy them. However, you cannot claim the work performed by the contractors after February 1, 2010 even if you’ve already paid for them.