LEED v5 BD+C Rating System_November 2025_clean - Page 102

Extracted Content

• Demonstrate balanced ventilation meeting the criteria in Option 1.

AND

PATH 1. PEAK LOAD INTENSITY (1–3 POINTS)

Limit the sum of peak heating load and peak cooling load per unit of treated floor area to be less than or equal to the thresholds specified in Table 2. Calculate peak loads using one of the following:

• WUFI Passive Design Tool, following the Passive House Institute U.S. protocol.

• Passive House Planning Package, following the Passive House Institute protocol to determine maximum heating load and maximum cooling load.

Table 2. Points for Meeting Caps on the Sum of Peak Heating and Cooling Loads

Points	New Construction	Major Renovation
1	16 Btu-h/sq. ft. (50 W/sq. m.)	20 Btu-h/sq. ft. (63 W/sq. m.)
2	12 Btu-h/sq. ft. (38 W/sq. m.)	15 Btu-h/sq. ft. (47 W/sq. m.)
3	8 Btu-h/sq. ft. (25 W/sq. m.)	10 Btu-h/sq. ft. (32 W/sq. m.)

OR

PATH 2. ASHRAE 90.1 TRADE-OFF METHODS (1–3 POINTS)

Comply with envelope and/or HVAC improvements for a maximum of 3 points.

Envelope loads (1–2 points) Demonstrate a percent improvement in the sum of system peak heating loads and system peak cooling loads associated with the proposed envelope performance factor compared to the base envelope performance factor determined in accordance with the ASHRAE 90.1-2022, Building Envelope Trade-off Option (Normative Appendix C). Points are awarded according to Table 3.

Table 3. Points for Percentage Improvement in Peak Thermal Loads from Envelope

Points	Percent Improvement
1	10%
2	20%

AND/OR

Ventilation Loads (1 point) Demonstrate a minimum 10% improvement in the sum of building peak coincident heating loads and building peak coincident cooling loads for the TSPR proposed building design versus the product of the TSPR reference building design and ASHRAE 90.1-2022, Table L5-4, Mechanical

U.S. Green Building Council LEED v5 Reference Guide for Building Design and Construction, November 2025 Edition 95