Energy and water conservation standards and their effective dates.

  1. Law
  2. CFR 10
  3. Energy
  4. Department of Energy
  5. Energy Conservation
  6. Energy Efficiency Program for Certain Commercial and Industrial Equipment
  7. Commercial Packaged Boilers
  8. Energy Efficiency Standards
  9. Energy and water conservation standards and their effective dates.

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§ 431.87 Energy and water conservation standards and their effective dates.

(a) Each commercial packaged boiler listed in Table 1 to § 431.87 and manufactured on or after March 2, 2012 and prior to January 10, 2023, must meet the applicable energy conservation standard levels as follows:

Expand Table

Table 1 to § 431.87 - Commercial Packaged Boiler Energy Conservations Standards

Equipment Subcategory Size category
(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 ET means “thermal efficiency” and EC means “combustion efficiency” as defined in 10 CFR 431.82.

(b) Each commercial packaged boiler listed in Table 2 to § 431.87 and manufactured on or after January 10, 2023, must meet the applicable energy conservation standard levels as follows:

Expand Table

Table 2 to § 431.87 - Commercial Packaged Boiler Energy Conservations Standards

Equipment Size category
(rated input) 		Energy
conservation
standard
Small Gas-Fired Hot Water Commercial Packaged Boilers ≥300,000 Btu/h and ≤2,500,000 Btu/h 84.0% ET.
Large Gas-Fired Hot Water Commercial Packaged Boilers >2,500,000 Btu/h and ≤10,000,000 Btu/h 85.0% EC.
Very Large Gas-Fired Hot Water Commercial Packaged Boilers >10,000,000 Btu/h 82.0% EC.
Small Oil-Fired Hot Water Commercial Packaged Boilers ≥300,000 Btu/h and ≤2,500,000 Btu/h 87.0% ET.
Large Oil-Fired Hot Water Commercial Packaged Boilers >2,500,000 Btu/h and ≤10,000,000 Btu/h 88.0% EC.
Very Large Oil-Fired Hot Water Commercial Packaged Boilers >10,000,000 Btu/h 84.0% EC.
Small Gas-Fired Steam Commercial Packaged Boilers ≥300,000 Btu/h and ≤2,500,000 Btu/h 81.0% ET.
Large Gas-Fired Steam Commercial Packaged Boilers >2,500,000 Btu/h and ≤10,000,000 Btu/h 82.0% ET.
Very Large Gas-Fired Steam Commercial Packaged Boilers ** >10,000,000 Btu/h 79.0% ET.
Small Oil-Fired Steam Commercial Packaged Boilers ≥300,000 Btu/h and ≤2,500,000 Btu/h 84.0% ET.
Large Oil-Fired Steam Commercial Packaged Boilers >2,500,000 Btu/h and ≤10,000,000 Btu/h 85.0% ET.
Very Large Oil-Fired Steam Commercial Packaged Boilers >10,000,000 Btu/h 81.0% ET.

* Where ET means “thermal efficiency” and EC means “combustion efficiency” as defined in 10 CFR 431.82.

** Prior to March 2, 2022, for natural draft very large gas-fired steam commercial packaged boilers, a minimum thermal efficiency level of 77 percent is permitted and meets Federal commercial packaged boiler energy conservation standards.

[85 FR 1681, Jan. 10, 2020]


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