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701 lffas!?i ngtCrr; Sta'rme r-e rg �-L de - h F. �.': r.'.'•!� r��er <br />Prescriptive Energy Conde Compliance for All Climate Zones in Washington <br />Single Faimilyr - New &,additions (effective February 9, 2021) <br />Table 406.3 - Energy Credits [Single FamilJ <br />--- <br />credits: SIF <br />2. AIR LEAKAGE CONTROL AM D EFFICIENT VENTILATION OPTIONS <br />Only one option from Items 2.1 through 2.4 may be selected in this category. <br />Compliance based on R482.4.1_2. Reduce the tested air leakage to 3.0 air changes per hour <br />maximum at 50 Pascals or <br />For R-2 Occupancies, optional compliance based cm _action R402.4.1.2: Reduce the tested <br />air leakage to 0.3 cfm/sf maximum at 50 Pascals and <br />All whole house ventilat�Dn requirements as determined by Section M15073 of the <br />rrremational Mesidennai Code or Section 403_8 of the r re,matra^a. Mechanical Cede shall <br />2.1 <br />be met with a high efficiency fan(s) lmaxi mum 0,35 watts/cfrn;, not interlocked with the <br />0-5 <br />furnace fan 4if present,'. Ventilation systems using a furnace including an EC:M motor are <br />allowed, provided that they are controlled to operate at low speed in ventilation only <br />made. <br />To quality to claim this credit, the building permit drawings shall specify the option being <br />selected and the maximum tested building air leakage, and shall show the qualifying <br />ventilation system and its control sequence of operation - <br />,Compliance 'based on section R402.4.1.2: Reduce the tested air leakage to 2.0 air changes <br />per hour maximum at 5G Pascals or <br />For R-2 Occupancies; optional compliance based on Section R442.4.1.2: Reduce the tested <br />2.2 <br />air leakage to G-25 cfm/sf maximum at 50 Pawls and <br />1.0 <br />All whole house ventilation requirements as determined by Section M15073 of the <br />enrematia,ia� aesidienriai Code or Section 403.3 of the Internat amol Mechankai Code shall <br />be met with a heat recovery ventilation system with minimum sensible heat recovery <br />efficiency of 0.55. <br />Compliance based on Section R402.4.1.2: <br />Reduce the tested air leaikageto 1.5 air changes per hour maximum at 50 Pascals or <br />For R-2 Occupancies, optional compliance based on Section R402.4.1.2: Reduce the tes=led <br />2-3 <br />air leakage to 0.25 cfmfsf maximum at 50 Pascals and <br />1.5 <br />All whole house ventilation requirements as determined by Section r.125073 of the <br />International Mesiderrtiai code or section 403.8 of the tarernau'a-a1 Mechamcol tone shall <br />be met with a Treat recovery ventilation system with minimum sensible heat recovery <br />efficiency of 0.75. = <br />Compliance based on Section R402.4.1.2: <br />Reduce the tested air leakage to 0.E air changes per hour maximum at 50 Pascals or <br />For 111-2 Occupancies, optional compliance based an -':scion ?.442.4.1.2: Reduce the tested <br />2.4 <br />air leakage to 0.15 cfm/sf :maximum at 5+0 Pascals and <br />2 0 <br />All whole house ventilation requirements as determined by Section h11507_3 of the <br />trrremarionad rtevae nnai code or section 403.3 of the o remariea.^al Mechoni_al Coje shall <br />be met with a heat recovery ventilation system with minimum sensible cheat recovery <br />efficiency of 0.8+0. Duct installation shall comply with section R403.3.7.' <br />' To qualify to claim this credit the building permit drawings shall specife the option being selected and shall <br />specify the maximum tested building air leakage and! steal l show the heat recovery ventUation system. <br />