LEED v5 BD+C Rating System_November 2025_clean - Page 096

Extracted Content

PATH 1. NO ON-SITE COMBUSTION (3–4 POINTS)

Design and operate the project from start-up with no on-site combustion except for emergency support systems.

Combined weighted average equipment efficiency for space heating and SWH must be at least 1.8 COP for 4 points and at least 1.3 COP for 3 points.

The following equipment may be excluded from the COP determination:

- Space heating equipment in climate zones 0–2.

- Supplemental heating equipment designed only for operation at low temperatures.

- SWH equipment with a total project SWH capacity less than 34,000 Btu/hr (10 kW).

- SWH equipment in nonresidential spaces complying with the point-of-use water

heater criteria in ASHRAE 90.1-2022, Section 11.5.2.3.3, W05, without exceptions.

OR

PATH 2. NO ON-SITE COMBUSTION EXCEPT AT LOW TEMPERATURES (1–3 POINTS)

Pursue any combination of the following cases for a maximum of 3 points:

Case 1. Space Heating (1–2 points)

Design space heating to be capable of operating without on-site combustion except at low temperatures. Projects must have a weighted average space heating equipment efficiency of at least 1.8 COP for 2 points and 1.3 COP for 1 point.

The following equipment may be excluded from the COP determination:

- Space heating equipment in climate zones 0–2

- Supplemental heating equipment designed only for operation at low temperatures

AND/OR

Case 2. Service Water Heating (1 point)

Design SWH systems to be capable of operating without on-site combustion except at low temperatures. Projects with total SWH capacity exceeding 34,000 Btu/hr (10 kW) must have a weighted average service hot water equipment efficiency of at least 1.8 COP or domestic hot water solar fraction of at least 0.4.

U.S. Green Building Council LEED v5 Reference Guide for Building Design and Construction, November 2025 Edition 89