Core TradesQuestion 195 of 700
Under the California Energy Code, sealing forced-air duct systems is required PRIMARILY to:
a.Limit conditioned-air leakage so the system delivers heating and cooling efficiently
b.Increase the noise level of the air handler
c.Allow smaller-diameter ducts to be used everywhere
d.Eliminate the need for duct insulation
Explanation
Duct sealing (verified by leakage testing) limits the loss of conditioned air so the system delivers the intended heating and cooling efficiently. It is not meant to increase noise, does not by itself allow undersized ducts, and does not remove the separate requirement to insulate ducts in unconditioned spaces.
Law Reference: 2025 CA Energy Code (Title 24, Part 6)Practice all 700 questions free — no signup required.
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