10 CFR 431.87 - Energy conservation standards and their effective dates.

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§ 431.87 Energy conservation standards and their effective dates.

(a) Each commercial packaged boiler listed in Table 1 of this section and manufactured on or after the effective date listed must meet the indicated energy conservation standard.

Table 1 - Commercial Packaged Boiler Energy Conservation Standards

Equipment category Subcategory Certified rated input Efficiency level -
effective date:
March 2, 2012*
Hot Water Commercial Packaged Boilers Gas-fired ≥300,000 Btu/h and ≤2,500,000 Btu/h 80.0% ET.
Hot Water Commercial Packaged Boilers Gas-fired >2,500,000 Btu/h 82.0% EC.
Hot Water Commercial Packaged Boilers Oil-fired ≥300,000 Btu/h and ≤2,500,000 Btu/h 82.0% ET.
Hot Water Commercial Packaged Boilers Oil-fired >2,500,000 Btu/h 84.0% EC.
Steam Commercial Packaged Boilers Gas-fired - all, except natural draft ≥300,000 Btu/h and ≤2,500,000 Btu/h 79.0% ET.
Steam Commercial Packaged Boilers Gas-fired - all, except natural draft >2,500,000 Btu/h 79.0% ET.
Steam Commercial Packaged Boilers Gas-fired - natural draft ≥300,000 Btu/h and ≤2,500,000 Btu/h 77.0% ET.
Steam Commercial Packaged Boilers Gas-fired - natural draft >2,500,000 Btu/h 77.0% ET.
Steam Commercial Packaged Boilers Oil-fired ≥300,000 Btu/h and ≤2,500,000 Btu/h 81.0% ET.
Steam Commercial Packaged Boilers Oil-fired >2,500,000 Btu/h 81.0% ET.

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

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

Table 2 - Commercial Packaged Boiler Energy Conservation Standards

Equipment category Subcategory Certified rated input Efficiency level -
Effective Date:
March 2, 2022*
Steam Commercial Packaged Boilers Gas-fired - natural draft ≥300,000 Btu/h and ≤2,500,000 Btu/h 79.0% ET.
Steam Commercial Packaged Boilers Gas-fired - natural draft >2,500,000 Btu/h 79.0% ET.

* Where ET is thermal efficiency.

[ 81 FR 89306, Dec. 9, 2016]

Title 10 published on 10-May-2017 03:48

The following are ALL rules, proposed rules, and notices (chronologically) published in the Federal Register relating to 10 CFR Part 431 after this date.

  • 2017-03-21; vol. 82 # 53 - Tuesday, March 21, 2017
    1. 82 FR 14426 - Energy Conservation Program: Test Procedures for Compressors
      GPO FDSys XML | Text
      DEPARTMENT OF ENERGY, Office of Energy Efficiency and Renewable Energy
      Final rule; further delay of effective date.
      As of March 21, 2017, the effective date of the rule amending 10 CFR parts 429 and 431 published in the Federal Register at 82 FR 1052 on January 4, 2017, delayed until March 21, 2017 at 82 FR 8985 on February 2, 2017, is further delayed until July 3, 2017. The incorporation by reference of the publication listed in this rule is approved by the Director of the Federal Register as of July 3, 2017.
      10 CFR Parts 429 and 431

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