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Federal Register / Vol. 86, No. 58 / Monday, March 29, 2021 / Rules and Regulations
the current CEER calculations for singlespeed room ACs, given the proposals discussed above. 85 FR 35700, 35731
Jun. 11, 2020.
AHAM supported DOEs proposal to maintain the current CEER calculations for single-speed room ACs, stating that there was no need to or justification for amending the CEER calculations at this time. AHAM, No. 13 at p. 8.
NEAA supported implementing a seasonal metric for all room ACs that would represent the performance at multiple outdoor temperature conditions, similar to the seasonal energy efficiency ratio SEER metric used for central air conditioners. NEAA
suggested that in the near-term to reduce test burden, single-speed equipment should be allowed to use the current test procedure and to calculate a seasonal rating using a PAF. NEAA
recommended that DOE maintain the peak CEER metric as a voluntary reporting metric. NEAA noted that this peak-load efficiency can continue to be used by utility programs and energy modelers but would not be the basis for energy conservation standards. NEAA, No. 16 at p. 3; see also NEAA, Preliminary Analysis, No. 24 at pp. 3
4 DOE is not amending the energy efficiency metric for room ACs. While DOE recognizes the utility of a single test approach for all room ACs, as discussed in section III.E.1 of this document, DOE has determined that testing single-speed room ACs at multiple outdoor temperature conditions would result in an unwarranted increase in test burden on manufacturers. While this increase in test burden could be mitigated using NEEAs suggestion to test single-speed room ACs using the current test procedure and applying a PAF, DOE
notes that this approach would require the recertification of all room ACs currently on the market, and for most models would likely change the cooling capacity and efficiency, both of which are metrics that are familiar to consumers and are used as a basis for purchasing decisions. Thus, a fundamental change to the cooling capacity and CEER metric, by adopting multiple test conditions or applying an adjustment factor for all single-speed room ACs would result in recertification costs and potential consumer confusion.
Based on this reasoning, DOE is proceeding with its proposal to maintain the current CEER calculations for single-speed room ACs.

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J. Certification and Verification Requirements In the June 2020 NOPR, DOE
proposed to update the sampling plan and certification reporting requirements in 10 CFR 429.15a2ii and b2 to conform the current metric by requiring the reporting of the CEER metric and to remove references to the previous performance metric, EER. 85 FR 35700, 35731Jun. 11, 2020. For variable-speed room ACs, DOE proposed to require additional reporting of cooling capacity and electrical input power for each of the three additional test conditions as part of a supplemental PDF that would be referenced within the manufacturers certification report. Id. DOE received no comments on the proposed changes to 10 CFR 429.15. DOE is amending the certification requirements as proposed to conform the reporting requirements to the current CEER metric and removing references to the previous performance metric, EER. For variablespeed room ACs, DOE requires the additional reporting of cooling capacity and electrical input power for each of the three additional test conditions as part of a supplemental PDF that would be referenced within the manufacturers certification report.
K. Reorganization of Calculations in 10
CFR 430.23
Previously, 10 CFR 430.23f contained instructions for determining a room ACs estimated annual operating cost, with calculations described for the average annual energy consumption, combined annual energy consumption, EER, and CEER.
In the June 2020 NOPR, DOE
proposed to remove the obsolete EER
calculation. 85 FR 35700, 35731 Jun.
11, 2020.
The California IOUs expressed concern with DOE removing the EER
calculation and metric, as doing so would prevent manufacturers from showing information if they so choose.
The California IOUs supported its removal as long as DOE continues to require reporting of the full-load capacity and power consumption, which is a substitute for EER. With the retention of the full-load capacity and power consumption metrics, the California IOUs stated that consumers are unlikely to be harmed, as knowing power consumption and efficiency at full load is essential to consumers in hot climates. Alternatively, the California IOUs recommended that DOE require reporting of the EER metric in the Compliance Certification Management System CCMS database, but that it not be the metric for energy
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conservation standards. California IOUs, Public Meeting Transcript, No. 12
at pp. 7275 AHAM commented that everything that is recorded is an additional burden and, in this case, continuing to report the EER metric in the CCMS database would be an unnecessary, additional burden.
AHAM, Public Meeting Transcript, No.
12 at p. 74
DOE agrees that requiring manufacturers to report the EER metric would be an unnecessary, additional burden on manufacturers. DOE also notes that maintaining the EER metric in public-facing materials may be confusing to consumers but that consumers will still have access to similarly important information through the full-load capacity and power consumption metrics that are currently reported to DOE and listed in the CCMS.
Therefore, DOE is proceeding with its proposal from the June 2020 NOPR to remove the obsolete EER calculation and maintain the requirement to report full-load capacity and power consumption.
In the June 2020 NOPR, DOE further proposed moving the CEER calculation from 10 CFR 430.23f to appendix F, to mitigate potential confusion, harmonize with the approach used for other products, and improve the readability of the calculations previously in 10 CFR
430.23f and appendix F. 85 FR 35700, 35731 Jun. 11, 2020. Similarly, DOE
proposed removing the calculations for average annual energy consumption in cooling mode and combined annual energy consumption from 10 CFR
430.23f and instead adding calculations for annual energy consumption for each operating mode in appendix F. Id. DOE also proposed to include in 10 CFR 429.15a3 through 5,10 CFR 429.15 b3, and 10 CFR
430.23f instructions to round cooling capacity to the nearest 100 Btu/h, electrical input power to the nearest 10
W, and CEER to the nearest 0.1 British thermal units per watt-hour Btu/Wh, to provide consistency in room AC
capacity, electrical input power, and efficiency representations. Id.
In the June 2020 NOPR, DOE similarly proposed to establish instructions in appendix F to round cooling capacity to the nearest 100 Btu/h, electrical input power to the nearest 10 W, and CEER to the nearest 0.1 Btu/Wh, to provide consistency in room AC capacity, electrical input power, and efficiency representations. Id. DOE also proposed to revise the estimated annual operating cost calculation to reference the annual energy consumption for each operating mode as calculated in appendix F, as opposed to the annual energy
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