1. Short title This Act may be cited as the Home Energy Savings Act . 2. Extension of credit for nonbusiness energy property (a) In general Subsection (g)(2) of section 25C of the Internal Revenue Code of 1986 is amended by striking December 31, 2017 and inserting December 31, 2019 . (b) Effective date The amendments made by this section shall apply to property placed in service after December 31, 2017. 3. Updating credit for nonbusiness energy property (a) In general Section 25C of the Internal Revenue Code of 1986, as amended by section 2, is amended— (1) in subsection (a)(1), by striking 10 percent and inserting 15 percent , (2) in subsection (b)— (A) in paragraph (1)— (i) by striking $500 and inserting $1,200 , and (ii) by striking December 31, 2005 and inserting December 31, 2019 , and (B) by striking paragraphs (2) and (3) and inserting the following: (2) Limitation on insulation material or system In the case of amounts paid or incurred for components described in subsection (c)(3)(A) by any taxpayer for any taxable year, the credit allowed under this section with respect to such amounts for such year shall not exceed the excess (if any) of $600 over the aggregate credits allowed under this section with respect to such amounts for all prior taxable years ending after December 31, 2019. (3) Limitation on windows (A) In general (i) Energy Star Most efficient In the case of amounts paid or incurred by any taxpayer for any taxable year for components described in subsection (c)(3)(B) which meet the most efficient certification under applicable Energy Star program requirements, the credit allowed under this section with respect to such amounts for such year shall not exceed the excess (if any) of $600 over the aggregate credits allowed under this section with respect to such amounts for all prior taxable years ending after December 31, 2019. (ii) Energy Star In the case of amounts paid or incurred by any taxpayer for any taxable year for components described in subsection (c)(3)(B) which do not meet the most