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Title 10

Displaying title 10, up to date as of 9/23/2021. Title 10 was last amended 9/22/2021.

Title 10

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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:

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.

(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:

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.

[85 FR 1681, Jan. 10, 2020]