RESIDENTIAL BOILERS.

SEC. 303. RESIDENTIAL BOILERS. Section 325(f) of the Energy Policy and Conservation Act (42 U.S.C. 6295(f)) is amended—(1) in the subsection heading, by inserting “and Boilers” after “Furnaces”;(2) by redesignating paragraph (3) as paragraph (4); and(3) by inserting after paragraph (2) the following:“(3) Boilers.—“(A) In general.—Subject to subparagraphs (B) and (C), boilers manufactured on or after September 1, 2012, shall meet the following requirements: Boiler TypeMinimum Annual Fuel Utilization EfficiencyDesign Requirements Gas Hot Water82%No Constant Burning Pilot, Automatic Means for Adjusting Water Temperature Gas Steam80%No Constant Burning Pilot Oil Hot Water84%Automatic Means for Adjusting Temperature Oil Steam82%None Electric Hot WaterNoneAutomatic Means for Adjusting Temperature Electric SteamNoneNone “(B) Automatic means for adjusting water temperature.—“(i) In general.—The manufacturer shall equip each gas, oil, and electric hot water boiler (other than a boiler equipped with a tankless domestic water heating coil) with automatic means for adjusting the temperature of the water supplied by the boiler to ensure that an incremental change in inferred heat 121 STAT. 1553 load produces a corresponding incremental change in the temperature of water supplied.“(ii) Single input rate.—For a boiler that fires at 1 input rate, the requirements of this subparagraph may be satisfied by providing an automatic means that allows the burner or heating element to fire only when the means has determined that the inferred heat load cannot be met by the residual heat of the water in the system.“(iii) No inferred heat load.—When there is no inferred heat load with respect to a hot water boiler, the automatic means described in clauses (i) and (ii) shall limit the temperature of the water in the boiler to not more than 140 degrees Fahrenheit.“(iv) Operation.—A boiler described in clause (i) or (ii) shall be operable only when the automatic means described in clauses (i), (ii), and (iii) is installed.“(C) Exception.—A boiler that is manufactured to operate without any need for electricity or any electric connection, electric gauges, electric pumps, electric wires, or electric devices shall not be required to meet the requirements of this paragraph.”.