Home Energy Savings Act of 2012 - Amends the Internal Revenue Code, with respect to the tax credit for nonbusiness energy property expenditures, to: (1) make such tax credit permanent; (2) increase from $500 to $1,000 the dollar limitation on such credit; (3) allow the inclusion of labor costs in amounts eligible for such credit; (4) revise definitions and requirements relating to roofing products and for natural gas, propane, oil furnaces, or hot water boilers and heaters; and (5) set forth documentation requirements for claiming such credit.