Ua hoʻolālā ʻia ka pahu ea acoustic alumini no ka ʻōnaehana ea hou a i ʻole ʻōnaehana HVAC, i hoʻopili ʻia ma ka hopena o ka lumi. No ka mea, hiki i kēia acoustic air duct ke hoʻohaʻahaʻa loa i ka walaʻau mechanical i hana ʻia e nā mea hoʻoulu, nā mea pā a i ʻole nā ea ea a me ka leo makani i hana ʻia e ke kahe o ka ea i ka pipeline; I hiki i nā lumi ke noho mālie a ʻoluʻolu i ka wā e paʻa ana ka ʻōnaehana ea hou a i ʻole ʻōnaehana HVAC. Pono ka ʻea acoustic no kēia mau ʻōnaehana.