855773644-LEED-v5-BD-C-Reference-Guide-Launch-Edition - Page 288

Extracted Content

• This exception does not apply to equipment in residential spaces due to higher service water heating demand for these space types.

  • Service water heating equipment for projects with a total service water heating capacity of less than 34,000 Btu/h (10 kW). For New Construction, this refers to the installed capacity. For Core and Shell, this refers to the total capacity necessary to meet project loads, regardless of whether the equipment is in the project scope.

For Core and Shell, future equipment where applicable building code or construction drawings for projects with tenancy confirm a weighted average COP of at least 1.8.

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

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

INCLUDED EQUIPMENT FOR WEIGHTED AVERAGE COP DETERMINATION

• Include all equipment not specifically excluded above in the weighted average COP determination.

  • Option 1. No On-site Combustion . (Core and Shell Option 1, Path 1) Include all space heating and service water heating not specifically excluded above.

  • Option 2. No On-site Combustion . (Core and Shell Option 1, Path 2)

o Path 1. Space Heating . (Core and Shell, Case 1) Include all space heating

equipment not specifically excluded above.

o Path 2. Service Water Heating . (Core and Shell, Case 2). Include all service water

heating equipment not specifically excluded above.

• Projects pursuing both Path 1 and Path 2 may optionally show a combined weighted average equipment efficiency for space heating and service water heating of at least 1.8 COP rather than a weighted average COP per system.

• Core and Shell Option 1, Path 3. No On-Site Combustion — Limited Scope . Include all space heating and service water heating equipment included in the project scope of work not specifically excluded above.

For New Construction, assess the weighted average COP based on total installed equipment capacity.

U.S. Green Building Council LEED v5 Reference Guide for Building Design and Construction, April 2025 Launch Edition 278