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Electronic Code of Federal Regulations

e-CFR data is current as of February 20, 2020

Amendment


10 CFR--PART 431

View Printed Federal Register page 85 FR 1681 in PDF format.

Amendment(s) published January 10, 2020, in 85 FR 1681

Effective Dates: Mar. 10, 2020

2. Section 431.87 is revised to read as follows:

§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

EquipmentSubcategorySize category
(input)
Efficiency level—
effective date:
March 2, 2012*
Hot Water Commercial Packaged BoilersGas-fired≥300,000 Btu/h and ≤2,500,000 Btu/h80.0% ET.
Hot Water Commercial Packaged BoilersGas-fired>2,500,000 Btu/h82.0% EC.
Hot Water Commercial Packaged BoilersOil-fired≥300,000 Btu/h and ≤2,500,000 Btu/h82.0% ET.
Hot Water Commercial Packaged BoilersOil-fired>2,500,000 Btu/h84.0% EC.
Steam Commercial Packaged BoilersGas-fired—all, except natural draft≥300,000 Btu/h and ≤2,500,000 Btu/h79.0% ET.
Steam Commercial Packaged BoilersGas-fired—all, except natural draft>2,500,000 Btu/h79.0% ET.
Steam Commercial Packaged BoilersGas-fired—natural draft≥300,000 Btu/h and ≤2,500,000 Btu/h77.0% ET.
Steam Commercial Packaged BoilersGas-fired—natural draft>2,500,000 Btu/h77.0% ET.
Steam Commercial Packaged BoilersOil-fired≥300,000 Btu/h and ≤2,500,000 Btu/h81.0% ET.
Steam Commercial Packaged BoilersOil-fired>2,500,000 Btu/h81.0% 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:

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

EquipmentSize category
(rated input)
Energy
conservation
standard
Small Gas-Fired Hot Water Commercial Packaged Boilers≥300,000 Btu/h and ≤2,500,000 Btu/h84.0% ET.
Large Gas-Fired Hot Water Commercial Packaged Boilers>2,500,000 Btu/h and ≤10,000,000 Btu/h85.0% EC.
Very Large Gas-Fired Hot Water Commercial Packaged Boilers>10,000,000 Btu/h82.0% EC.
Small Oil-Fired Hot Water Commercial Packaged Boilers≥300,000 Btu/h and ≤2,500,000 Btu/h87.0% ET.
Large Oil-Fired Hot Water Commercial Packaged Boilers>2,500,000 Btu/h and ≤10,000,000 Btu/h88.0% EC.
Very Large Oil-Fired Hot Water Commercial Packaged Boilers>10,000,000 Btu/h84.0% EC.
Small Gas-Fired Steam Commercial Packaged Boilers≥300,000 Btu/h and ≤2,500,000 Btu/h81.0% ET.
Large Gas-Fired Steam Commercial Packaged Boilers>2,500,000 Btu/h and ≤10,000,000 Btu/h82.0% ET.
Very Large Gas-Fired Steam Commercial Packaged Boilers**>10,000,000 Btu/h79.0% ET.
Small Oil-Fired Steam Commercial Packaged Boilers≥300,000 Btu/h and ≤2,500,000 Btu/h84.0% ET.
Large Oil-Fired Steam Commercial Packaged Boilers>2,500,000 Btu/h and ≤10,000,000 Btu/h85.0% ET.
Very Large Oil-Fired Steam Commercial Packaged Boilers>10,000,000 Btu/h81.0% 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.

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