Ko te hauhautanga tētahi o ngā huānga matua o te pūnaha whakamatao o te mīhini whakamatao wai porowhita kati ā-ahumahi. He matū e huri ana i te āhua mai i te wai ki te hau, ka hoki anō ki te whakatutuki i te whakamatao.
Ko te hauhautanga tētahi o ngā huānga matua o te pūnaha whakamatao o te pouaka whakamatao wai ā-ahumahi. He matū e huri ana i te āhua mai i te wai ki te hau, ka hoki anō ki te whakatutuki i te whakamatao. I mua, he tino rongonui te R-22 hei pouaka whakamatao e whakamahia ana i roto i ngā pouaka whakamatao wai ā-ahumahi. Engari nā te mea he kino ki te paparanga ozone, he maha ngā kaihanga pouaka whakamatao wai ā-ahumahi ka mutu te whakamahi i tēnei. Hei kaiwhakarato pouaka whakamatao hoa-taiao, ka whakamahia e te pouaka whakamatao wai ā-ahumahi S&A Teyu he pouaka whakamatao hoa-taiao. Nō reira, he aha ngā momo pouaka whakamatao hoa-taiao?
