; (ii) in the case of woodstoves, is certified by the Environmental Protection Agency; (iii) in the case of a wood stove replacement, replaces an existing wood stove with a stove that is certified by the Environmental Protection Agency, if a voucher is provided by the installer or other responsible party certifying that the old stove has been removed and made inoperable; (iv) in the case of a furnace or boiler, is in a home with a distribution system (such as piping, ducts, vents, blowers, or affixed fans) that allows heat from the furnace or boiler to reach all or most parts of the home; and (v) is certified by an independent test laboratory approved by the Secretary as having— (I) thermal efficiency (with a high heating value) of at least 75 percent for stoves and 80 percent for furnaces and boilers; (II) particulate emissions of less than 3.0 grams per hour for wood stoves or pellet stoves; and (III) less than 0.07 lbs per million BTU for outdoor boilers and furnaces. (d) Qualified home energy efficiency retrofit (1) In general A qualified home energy efficiency retrofit is a retrofit that implements measures, during a rebate-eligible year in the existing principal residence of the homeowner which is located in the United States, intended to reduce the energy use of such residence. A qualified home energy efficiency retrofit shall— (A) be implemented and installed by a qualified contractor; (B) install a set of measures modeled to achieve a reduction in home energy use of 20 percent or more from the baseline established under subparagraph (C), using computer modeling software approved under paragraph (2); (C) establish the baseline energy use as provided in subsection (e)(1)(C); (D) implement a test-out procedure, following guidelines of the applicable accrediting program established by an organization identified in subparagraphs (A), (B), or (C) of section 32104(a)(2) or equivalent guidelines approved by the Secretary for this purpose, to ensure— (i) the safe operation of all systems post retrofit