; and (2) provide grants to States to carry out programs to provide rebates in accordance with section 203. 202. Partial system rebates (a) Amount of rebate In carrying out the Home Energy Savings Retrofit Rebate Program, and subject to the availability of appropriations for such purpose, the Secretary shall provide a homeowner a rebate, to be known as a partial system rebate, of, except as provided in section 204, up to— (1) $800 for the purchase and installation of insulation and air sealing within a home of the homeowner; and (2) $1,500 for the purchase and installation of insulation and air sealing within a home of the homeowner and replacement of an HVAC system, the heating component of an HVAC system, or the cooling component of an HVAC system, of such home. (b) Specifications (1) Cost The amount of a partial system rebate provided under this section shall, except as provided in section 204, not exceed 30 percent of cost of the purchase and installation of insulation and air sealing under subsection (a)(1), or the purchase and installation of insulation and air sealing and replacement of an HVAC system, the heating component of an HVAC system, or the cooling component of an HVAC system, under subsection (a)(2). Labor may be included in such cost but may not exceed— (A) in the case of a rebate under subsection (a)(1), 50 percent of such cost; and (B) in the case of a rebate under subsection (a)(2), 25 percent of such cost. (2) Replacement of an HVAC system, the heating component of an HVAC system, or the cooling component of an HVAC system In order to qualify for a partial system rebate described in subsection (a)(2)— (A) any HVAC system, heating component of an HVAC system, or cooling component of an HVAC system installed shall be Energy Star Most Efficient certified