Njengoba sonke sazi, uwoyela wokupholisa udlala indima ebalulekile ohlelweni lokupholisa, futhi inkomba ye-flash point ayikwazi ukunganakwa. I-flash point kawoyela wokupholisa kufanele ibe phezulu kunezinga lokushisa lokukhipha umoya we-compressor. Ngokwesibonelo, kuma-compressor asebenzisa ama-refrigerants afana ne-R717, R12, noma i-R22, i-flash point kawoyela wokupholisa ofanele wona ngokuvamile kufanele ibe ngaphezu kuka-160°C. Uma i-flash point ingahlangabezani nenqamulazo, ngesikhathi sokusebenza kwe-compressor, njengoba izinga lokushisa lokukhipha umoya likhuphuka, uwoyela wokupholisa ungase uhlangabezane nezimo eziyingozi ezifana nokuvutha okungazelelwe, okuthinta ukusebenza okuphephile nokuzinzile kohlelo lonke lokupholisa. Ngakho-ke, lapho ukhetha uwoyela wokupholisa, qiniseka ukuthi unaka le parameter ebalulekile ye-flash point ukuze uqinisekise ukuthi ihlangabezana nezidingo zokusebenza ze-compressor.