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ʻO ka pahu ea hikiwawe i hoʻopaʻa ʻia me ka ʻaʻahu alumini
Hoʻolālā ʻia ka ʻea ea maʻalahi i hoʻopaʻa ʻia no ka ʻōnaehana ea hou a i ʻole ʻōnaehana HVAC, i hoʻopili ʻia ma nā hopena o ka lumi. Me ke aniani huluhulu insulation, hiki i ka duct ke hoʻopaʻa i ka ea wela i loko; hoʻomaikaʻi kēia i ka pono o ka ʻōnaehana air conditioning; mālama ia i ka ikehu a me ke kumukūʻai no ka HVAC. ʻO ka mea hou aku, hiki i ke aniani wool insulation layer ke muffle i ka leo ea. He koho naʻauao ka hoʻohana ʻana i ka ʻea ea insulated flexible i loko o ka ʻōnaehana HVAC.