Yeah, that kind of bites but there really was a world of difference between contractors. We were able to discuss the pros and cons of pretty much all our options since he handles and has loads of experience with a wide range of types. We are on the list, so there's always the chance that we can get in early, but the probability is small.

I haven't looked at the rules, but can't you buy the thing now and get the credit?

Great thought! I looked it up, though, and no such luck ...

Is there a tax credit for gas, oil, or propane water heaters?

Timing:

Tax credit in effect in 2009 and 2010. Must be installed in your "principal residence" between January 1, 2009 and December 31, 2010.

Could he "install" it now, and then make a "minor adjustment" / "service visit" when he has time , next year?