855773644-LEED-v5-BD-C-Reference-Guide-Launch-Edition - Page 280
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 service water heating 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.
- Service hot water heating (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
Case 2. Service Water Heating (1 point)
Design service water heating systems to be capable of operating without on-site combustion except at low temperatures. Projects with total service water heating 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.
The following equipment may be excluded from the COP determination:
U.S. Green Building Council LEED v5 Reference Guide for Building Design and Construction, April 2025 Launch Edition 270