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855773644-LEED-v5-BD-C-Reference-Guide-Launch-Edition - Page 287

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REQUIREMENTS EXPLAINED: BOTH NEW CONSTRUCTION AND CORE AND SHELL (ALL OPTIONS)

Weighted Average COP

The minimum weighted average COP criteria is predicated on a design that uses heat pump technology instead of inefficient electric resistance heating to meet most of the project’s space heating and service water heating loads. This COP criteria limits increased grid peak demand associated with electrification.

EXCLUSIONS FROM WEIGHTED AVERAGE COP DETERMINATION

Optionally exclude the following equipment from the weighted average COP determination:

  • Space heating equipment in climate zones 0–2 . This equipment is not required because electric resistance heating contributes much less to peak grid load in hot climates than in cooler climates. Refer to ASHRAE Standard 169, Climatic Data for Building Design Standards [92] to determine the project’s climate zone.

  • Supplemental heating equipment designed only for operation at or below 20°F (-6.5 °C).

  • This equipment can skew the average efficiencies calculated using capacity-weightings of rated efficiencies. This exclusion applies to supplemental or auxiliary electric heating used for space heating or service water heating. It is also fuel for low-temperature operation for space heating or service water heating in Option 2 (Core and Shell Option 1, Path 2).

  • Point of use service water heating equipment in non-residential spaces meeting ASHRAE 90.1-2022, Section 11.5.2.3.3, W05, without exceptions. Electric point-of-use water heaters are often more appropriate than centralized heat pump equipment and negligibly increase peak electric demand for non-residential projects with low service water heating demand distributed throughout the building. Therefore, teams may exclude point-of-use water heaters in non-residential spaces from the COP determination if they comply with ASHRAE 90.1-2022, 11.5.2.3.3, W05 without exception.

  • Non-residential service water heating equipment that does not comply with the ASHRAE 90.1-2022 11.5.2.3.3 criteria must be included in determining the weighted average COP. For example, storage water heaters supplying showers or commercial kitchen operations.

92 “ASHRAE Standard 169 Climatic Data For Building Design Standards”, ASHRAE, (2021), https://www.ashrae.org/file%20library/technical%20resources/standards%20and%20guidelines/standards%20addenda/169_2020_a _20211029.pdf.

U.S. Green Building Council LEED v5 Reference Guide for Building Design and Construction, April 2025 Launch Edition 277

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