Hfc 404A yog hydrofluorocarbon muab ntawm peb cov tub yees uas muaj R-125 (44%), R134a (52%) thiab R143a (4%), feem ntau cov tsev lag luam tshiab thiab tub yees txias tau ua rau HFC xws li R-404A , R -507 , lossis R-407C qhov R-502 tau siv yav tas los. Whilst nws tau dhau los ua dav rau lwm txoj rau CFC R502,
Thiab 404a tub yees nws yog ib qho tseem ceeb rau ntau hom nruab nrab thiab tsis tshua muaj siab txias yees txias lossis kev lag luam tub yees, xws li cov cav tov nab kuab , lub tsev lag luam khoom noj khoom haus / cov tub yees, cov tub yees cov tub yees, cov cua txias, cov zaub mov, .
