855773520-LEED-v5-ID-C-Reference-Guide-Launch-Edition-1 - Page 159

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COP for projects in existing buildings. Refer to the Weighted Average COP section for calculations and exclusions from COP determination.

Projects without heating Credit achievement is automatic for projects that have no space heating from base building systems or from equipment installed in the project scope.

PATH 2. SWH

Path 2 requirements apply to all SWH use for the project, including for shared restrooms or shower facilities that are not in the project boundary but are accessed regularly by occupants of the space.

SWH is the supply of hot water for purposes other than space heating and process applications. It is primarily used for handwashing, showering, and cleaning.

Electrification All SWH serving the project must be capable of operating without on-site combustion, except in low-temperature operating mode at or below 20°F (-6.5 °C).

Electrified SWH equipment must be designed with sufficient capacity and distribution capability to provide all necessary SWH at outdoor temperatures above 20°F (-6.5 °C) or the project’s design heating temperature.

Efficiency If the project’s total SWH load exceeds 34,000 Btu/h (10 kW), the SWH systems serving the project space must use efficient heat pump technology to achieve a weighted average SWH equipment efficiency of at least 1.8 COP for initial buildout, or at least 1.2 COP for existing buildings; or must generate at least 40% of the project’s total SWH load with solar thermal energy.

Point of use SWH equipment in nonresidential spaces may be excluded from the weighted average COP determination if it meets ASHRAE 90.1-2022, Section 11.5.2.3.3, W05, without exceptions. Refer to the Weighted Average COP section for calculations and exclusions from COP determination.

PATH 3. COOKING AND OTHER PROCESS LOADS

This path encourages design teams to eliminate on-site combustion from cooking, laundry, pool or spa heating, power generation, and all other process applications that traditionally use fuel.

Examples of other process applications commonly addressed through electrification include process heating, process drying, pre-conditioned air or 400 Hz systems in airports, and

U.S. Green Building Council LEED v5 Reference Guide for Interior Design and Construction, April 2025 Launch Edition 148