I received a call this AM from the good folks @ Carolina Green Building LLC.  It seems that they are seeing a lot of people make last minute efforts to implement energy efficient projects at the end of 2010?  Why the push?  Because these tax credits expire at the end of 2010.  What tax credits, you ask?  These are credits for improvements made to your main residential home such as more efficient doors, windows, insulation, HVAC, etc.  Qualified equipment (see your installer for whether items are qualified) are eligible for a 30% credit up to $1,500 total for the combined 2009 and 2010 tax years.  Don't make a mistake and assume you will receive the credit for 2010 if you maxed it out in 2009.