Kukwirira kwepamusoro, kugona kwakanyanya, V-maitiro emhepo sefa mune ese epurasitiki yakavharirwa furemu yakagadzirirwa kuisirwa muakavakwa-up mafirita mabhangi, padenga remba, kupatsanurwa masisitimu, mahara-akamira mayuniti, mapakeji masisitimu uye mhepo inobata.Iyo yazvino sefa ndeyechipiri-chizvarwa ine yakagadziridzwa kuita zvichikonzera yakaderera Hupenyu-Cycle Mutengo (LCC) sefa iripo.Fine fiber inovimbisa kuti sefa inochengetedza kushanda kwayo muhupenyu hwayo hwese muhurongwa.Iyo ine zvakare yakaderera yekutanga kudonha kudonha kwechero ASHRAE giredhi yakakwira-inoshanda sefa yemhepo.