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Duct testing Calculator (New Construction) My~� � ��` I <br /> At Rough-in (Total Leakage) • G –�I(� c <br /> 0 <br /> CFA of 1 Calculated Test2 Q <br /> Horne Standard Target CFM25 O <br /> v <br /> � <br /> a� <br /> Air Handler Present <_ 6 CFMZS per 100 sf of CFA � <br /> v— <br /> Air Handler not Present _< 4 CFM25 per 100 sf of CFA v <br /> — _ <br /> O <br /> � <br /> Post Construction � v <br /> V <br /> X <br /> CFA of 1 Calculated Tesf2 W <br /> Home Standard Target CFMZS o <br /> � <br /> v <br /> Air Handler Present = �^— ) � °1 <br /> �(, �; <_ 8 CFM25 per 100 sf of CFA � I � � j � � <br /> (Total Leakage) � � � <br /> Air Handler Present � <br /> <_ 6 CFM,S per 100 sf of CFP, � . <br /> (Leakage to Exterior) +; <br /> � , <br /> Air Handler not Present 5 4 CFMZS per 100 sf of CFA v I <br /> — � <br /> 1. Test resuits must comply with one of the Standards options. v <br /> 2. Test CflYl�s must be equal to or less th�n the calculated target. ~ <br /> Air Leakage testing Calculato� ;Blower poorTest) <br /> CFA of <br /> Standard Tested CFMSo Test Result <br /> Home <br /> ., 0.00030 SLA <br /> ((6MSaX 0.055)/(CFA X 144)� <br /> K, ;'� Cvzy I-iI� �� �Z �� - ������,�- oS �, S <br /> Glossary <br /> Rough-In: After installation of the complete aii distribution system but before installation of insulation and sheet <br /> rock. Allows for access to all duct seams and connections for re-evaluation of seal integrity �f standard is not met in <br /> intitial test. <br /> Post Construction: At or near final inspection. The home mu�t be compiete enough to pressurize the home to 25 <br /> pa. <br /> Total Leakage: Aggregation of the entire systems duct leakage in a duct test. <br /> Leakage to Exterior: Aggregation of all duct system leaks to the exterior of the CFA in a duct test. <br /> CFA: Conditioned floor area <br /> CFM25: Cubic feet per minute of air leakage at 25 pascals of pressure <br /> CFMso: Cubic feet per minute of air leakage at 50 pascals of pressure � � -- <br /> Pascal (pa): Un�t of pressu� � � � ��� �' � <br /> SLA: Specific le�' �/� (� I <br /> (. ' �-- <br /> t�' � `{'� <br />