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Code of Federal Regulations
Title 10 - ENERGYChapter II - DEPARTMENT OF ENERGYSubchapter D - ENERGY CONSERVATIONPart 431 - ENERGY EFFICIENCY PROGRAM FOR CERTAIN COMMERCIAL AND INDUSTRIAL EQUIPMENTSubpart E - COMMERCIAL PACKAGED BOILERS
ENERGY EFFICIENCY STANDARDS
Section 431.87 - Energy conservation standards and their effective dates

10 C.F.R. § 431.87

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Current through September 30, 2024
Section 431.87 - Energy conservation standards and their effective dates
(a) Each commercial packaged boiler listed in table 1 of this paragraph (a) and manufactured on or after the effective date listed must meet the indicated energy conservation standard.

Table 1 to Paragraph (a)-Commercial Packaged Boiler Energy Conservation Standards

Equipment categorySubcategoryCertified rated inputEfficiency level-effective date: March 2, 2012 *
Hot Water Commercial Packaged BoilersGas-fired[GREATER THAN EQUAL TO]300,000 Btu/h and [LESS THAN EQUAL TO]2,500,000 Btu/h80.0% ET.
Hot Water Commercial Packaged BoilersGas-fired[GREATER THAN]2,500,000 Btu/h82.0% EC.
Hot Water Commercial Packaged BoilersOil-fired[GREATER THAN EQUAL TO]300,000 Btu/h and [LESS THAN EQUAL TO]2,500,000 Btu/h82.0% ET.
Hot Water Commercial Packaged BoilersOil-fired[GREATER THAN]2,500,000 Btu/h84.0% EC.
Steam Commercial Packaged BoilersGas-fired, all, except natural draft[GREATER THAN EQUAL TO]300,000 Btu/h and [LESS THAN EQUAL TO]2,500,000 Btu/h79.0% ET.
Steam Commercial Packaged BoilersGas-fired, all, except natural draft[GREATER THAN]2,500,000 Btu/h79.0% ET.
Steam Commercial Packaged BoilersGas-fired-natural draft[GREATER THAN EQUAL TO]300,000 Btu/h and [LESS THAN EQUAL TO]2,500,000 Btu/h77.0% ET.
Steam Commercial Packaged BoilersGas-fired-natural draft[GREATER THAN]2,500,000 Btu/h77.0% ET.
Steam Commercial Packaged BoilersOil-fired[GREATER THAN EQUAL TO]300,000 Btu/h and [LESS THAN EQUAL TO]2,500,000 Btu/h81.0% ET.
Steam Commercial Packaged BoilersOil-fired[GREATER THAN]2,500,000 Btu/h81.0% ET.

* Where EC is combustion efficiency and ET is thermal efficiency.

(b) Each commercial packaged boiler listed in table 2 of this paragraph (b) and manufactured on or after the effective date listed in Table 2 must meet the indicated energy conservation standard.

Table 2 to Paragraph (b)-Commercial Packaged Boiler Energy Conservation Standards

Equipment categorySubcategoryCertified rated inputEfficiency level-effective date: March 2, 2022 *
Steam Commercial Packaged BoilersGas-fired-natural draft[GREATER THAN EQUAL TO]300,000 Btu/h and [LESS THAN EQUAL TO]2,500,000 Btu/h79.0% ET.
Steam Commercial Packaged BoilersGas-fired-natural draft[GREATER THAN]2,500,000 Btu/h79.0% ET.

* Where ET is thermal efficiency.

10 C.F.R. §431.87

88 FR 64352, Sept. 19, 2023
81 FR 79252, 12/12/2016; 81 FR 89306, 12/9/2016; 81 FR 89306, 1/9/2016; 85 FR 1681, 3/10/2020; 88 FR 64352, 9/19/2023