Some federal tax credits from some energy-efficient home improvements and other energy saving measures have been extended. Websites offer detailed information for homeowners and builders. Here's a sampling:
Air-Conditioning, Heating and Refrigeration Institute • Spotlights specific federal tax credit amounts for changes made to residential HVAC, water heaters, home gas and oil, at http://bit.ly/UflvvX.
Alliance to Save Energy • Offers background and details on energy-efficient tax credits for 2012, at http://bit.ly/UUowk0.