Return air duct leakage calculations include
a) 3% seepage if the return air duct is outside the conditioned space
b) 3% seepage if the return air duct is both inside and outside the conditioned space
c) 10% leakage if the return air duct is inside the conditioned space
d) 3% leakage if the return air duct is inside the conditioned space
e) 5% seepage if the return air duct is outside the conditioned space
Answer: A