Monga chida choyamikiridwa kwambiri cha firiji, mpweya wozizira wozizira kwambiri umagwiritsidwa ntchito kwambiri ndipo umalandiridwa bwino m'madera ambiri. Kotero, kodi mfundo ya firiji ya chozizira chozizira ndi mpweya wozizira kwambiri ndi chiyani? Chozizira chozizira chotsika ndi mpweya chimagwiritsa ntchito njira yopondereza mufiriji, yomwe imakhudza kwambiri kufalikira kwa firiji, mfundo zoziziritsa, ndi kugawa kwachitsanzo.