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855773520-LEED-v5-ID-C-Reference-Guide-Launch-Edition-1 - Page 164

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  • SWH equipment for projects with total SWH capacity less than 34,000 Btu/h (10 kW). This refers to total capacity necessary to meet project loads, regardless of whether the equipment is installed in the project scope of work.

Projects are not required to calculate the weighted average COP if all equipment meets one of the criteria above. For example, no minimum COP is required for a non-residential project in climate zone 1 with point-of-use water heating for 100% of its SWH load per ASHRAE 90.1- 2022 11.5.2.3.3.

When heat pump space heating is installed for a project in climate zones 0–2 or heat pump SWH is installed for projects with total SWH load less than 34,000 Btu/h (10 kW), the analyst may include all heating and SWH equipment in the calculations to demonstrate the required COP.

Included equipment for weighted average COP determination All equipment not specifically excluded above must be included in the weighted average COP determination.

For Options 1 and 2, include all applicable equipment serving the project, including base building equipment and equipment installed within the project scope.

  • Option 1. No On-Site Combustion. Base Building and Tenant Systems . Include all space heating and SWH serving the project, except equipment specifically excluded above. Option 2. No On-Site Combustion Except at Low Temperatures . Base Building and Tenant Systems. Projects pursuing both Path 1 and Path 2 may optionally show a combined weighted average equipment efficiency for space heating and SWH, rather than demonstrating weighted average COP per system type.

o Path 1. Space Heating . Include all space heating equipment serving the project,

both in the base building and in the project boundary, except equipment specifically excluded above.

o Path 2. SWH . Include all SWH equipment serving the project, except equipment

specifically excluded above.

  • Option 3. No On-Site Combustion, Limited Scope . Include all space heating and SWH equipment included in the project scope of work, except equipment specifically excluded above.

  • Option 4. Base building documentation and tenant compliance . Include space heating and SWH installed in the project scope if demonstrating compliance with the “Criteria per system type.”

U.S. Green Building Council LEED v5 Reference Guide for Interior Design and Construction, April 2025 Launch Edition 153

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