Make sure ductwork is insulated.

确保管道系统是绝缘的。

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A method of assembling HVAC ductwork components is described.

描述了一种组装HVAC管道系统部件的方法。

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The method includes the step of coupling together first and second ductwork components.

该方法包括将第一和第二管道系统部件连接在一起的步骤。

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But the energy consumed is much less than the energy delivered into the ductwork.

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Bridge operator's Forth Estuary Transport Authority (Feta) maintenance workers have installed several miles of ductwork to accommodate electrical wiring.

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Many homeowners will have to rearrange ductwork and interior walls to fit the high-SEER units, which can be twice as large as the ones they replace.

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