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Building Code Board of Appeals <br />Packet <br />May 12, 2025 <br />Page 16 of 64 <br />This and the next item provide details on the new <br />optional credits for water heating fuel neutrality. <br />(LECC) <br />[Simplification from LECC] [Strengthening from base] <br />[Flexibility] <br />28.Section R408.2.3 Reduced energy use in service water -heating <br />options is amended to read as follows: <br />R408.2.3 Reduced energy use in service water -heating options. <br />For measure numbers R408.2.3(1) through R408.2.3(7) and <br />R408.2.3(9), the installed hot water system shall meet one of the <br />Uniform Energy Factors (UEF) or Solar Uniform Energy Factors <br />(SUEF) in Table R408.2.3. For measure number R408.2.3(8), the <br />hot water distribution system shall comply with Section R408.2.3.1. <br />The credit value for R408.2.3(9) may be added to the credit value <br />for other electric water heater options when the requirements of <br />both measures are met. <br />29.Table R408.2.3 Service Water Heating Efficiencies is amended to add <br />the following row: <br />TABLE R408.2.3 SERVICE WATER HEATING EFFICIENCIES <br />MEASURE WATER <br />NUMBER HEATER <br />R408.2.3(9) Federal minimum <br />efficiency HPWH <br />SIZE AND <br />DRAW TYPE EFFICIENCY <br />PATTERN <br />HPWH with or Equal to or <br />All storage without hybrid Greater than <br />volumes, all draw electric federal minimum <br />patterns resistance efficiency <br />element standard <br />This provides details on the new optional credits <br />for duct testing in all multifamily units, instead <br />of just a sampling of them. (LECC) <br />[Flexibility] <br />30.A new Section R408.2.4.1 is added as follows: <br />R408.2.4.1 Testing duct leakage in all multifamily dwelling units. <br />Buildings with eight or more dwelling units or sleeoino units shall test <br />every dwelling unit or sleeping unit in accordance with the requirements of <br />Section R403.3.7. <br />