Chiyerekezo cha magwiridwe antchito a fyuluta ya mpweya chimatanthauza makamaka mphamvu yochotsera fumbi, kukana, ndi mphamvu yosungira fumbi. Mphamvu yochotsera fumbi ikhoza kuwerengedwa motsatira njira iyi:
Kuchotsa fumbi moyenera = (G2/G1) × 100%
G1: Kuchuluka kwa fumbi mu fyuluta (g/h)
G2: Kuchuluka kwa fumbi komwe kungasefedwe (g/h)
Kugwira ntchito bwino pochotsa fumbi kumadaliranso kukula kwa tinthu tating'onoting'ono. Kukana kumatanthauza kupanikizika kosiyana. Pofuna kuonetsetsa kuti fyuluta ndi yosalala, kupanikizika kochepa kosiyana kudzakhala bwino kwambiri. Kukana kowonjezereka kudzapangitsa kuti mphamvu zambiri zigwiritsidwe ntchito. Kukana kwakukulu kudzapangitsa kuti compressor ya mpweya igwedezeke. Chifukwa chake, muyenera kusintha fyuluta ikafika kapena ili pafupi ndi kupanikizika kololedwa kwa vacuum. Kuphatikiza apo, mphamvu yogwira fumbi imatanthauza fumbi losonkhanitsidwa pagawo lililonse. Ndipo gawo lake ndi g/m2.