# 10 C.F.R. § 431.87 (2026): Energy conservation standards and their effective dates

> Federal · Regulations · In force

URL: https://www.frixlaw.com/law-library/statutes/CFR_T10_P431_S431_87

## Section

- **Citation:** 10 C.F.R. § 431.87 (2026)
- **Heading:** Energy conservation standards and their effective dates
- **Jurisdiction:** Federal
- **Kind:** Regulations
- **Status:** In force
- **Text as of:** August 14, 2026
- **Source:** Compiled text
- **Location:** Title 10 CFR: Energy / Chapter II: DEPARTMENT OF ENERGY / Part 431: ENERGY EFFICIENCY PROGRAM FOR CERTAIN COMMERCIAL AND INDUSTRIAL EQUIPMENT / Subpart E: Commercial Packaged Boilers / § 431.87: § 431.87   Energy conservation standards and their effective dates.

## Text

(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% E
T
.
Hot Water Commercial Packaged Boilers
Gas-fired
>2,500,000 Btu/h
82.0% E
C
.
Hot Water Commercial Packaged Boilers
Oil-fired
≥300,000 Btu/h and ≤2,500,000 Btu/h
82.0% E
T
.
Hot Water Commercial Packaged Boilers
Oil-fired
>2,500,000 Btu/h
84.0% E
C
.
Steam Commercial Packaged Boilers
Gas-fired, all, except natural draft
≥300,000 Btu/h and ≤2,500,000 Btu/h
79.0% E
T
.
Steam Commercial Packaged Boilers
Gas-fired, all, except natural draft
>2,500,000 Btu/h
79.0% E
T
.
Steam Commercial Packaged Boilers
Gas-fired—natural draft
≥300,000 Btu/h and ≤2,500,000 Btu/h
77.0% E
T
.
Steam Commercial Packaged Boilers
Gas-fired—natural draft
>2,500,000 Btu/h
77.0% E
T
.
Steam Commercial Packaged Boilers
Oil-fired
≥300,000 Btu/h and ≤2,500,000 Btu/h
81.0% E
T
.
Steam Commercial Packaged Boilers
Oil-fired
>2,500,000 Btu/h
81.0% E
T
.
* Where E
C
is combustion efficiency and E
T
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% E
T
.
Steam Commercial Packaged Boilers
Gas-fired—natural draft
>2,500,000 Btu/h
79.0% E
T
.
* Where E
T
is thermal efficiency.
[88 FR 64352, Sept. 19, 2023]

## Nearby sections

- [10 C.F.R. § 431.81 (2026) § 431.81   Purpose and scope.](https://www.frixlaw.com/law-library/statutes/CFR_T10_P431_S431_81.md)
- [10 C.F.R. § 431.82 (2026) § 431.82   Definitions concerning commercial packaged boilers.](https://www.frixlaw.com/law-library/statutes/CFR_T10_P431_S431_82.md)
- [10 C.F.R. § 431.85 (2026) § 431.85   Materials incorporated by reference.](https://www.frixlaw.com/law-library/statutes/CFR_T10_P431_S431_85.md)
- [10 C.F.R. § 431.86 (2026) § 431.86   Uniform test method for the measurement of energy efficiency of commercial packaged boilers.](https://www.frixlaw.com/law-library/statutes/CFR_T10_P431_S431_86.md)
- [10 C.F.R. § 431.87 (2026) § 431.87   Energy conservation standards and their effective dates.](https://www.frixlaw.com/law-library/statutes/CFR_T10_P431_S431_87.md)

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Source: Frix Law Library, https://www.frixlaw.com/law-library/statutes/CFR_T10_P431_S431_87. Check the current official text before relying on it. Not legal advice.