Federal regulations · Through 2026-08-25 · Newer source version available

10 CFR 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 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 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 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.

Where this section sits in the code

Title 10—Energy
CHAPTER II—DEPARTMENT OF ENERGY
SUBCHAPTER D—ENERGY CONSERVATION
PART 431—ENERGY EFFICIENCY PROGRAM FOR CERTAIN COMMERCIAL AND INDUSTRIAL EQUIPMENT
Subpart E—Commercial Packaged Boilers

(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 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 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 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.

Collected 2026-08-27T02:24:09Z. Source file · JSON

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