Refrigerant for AC and refrigerator

[M.Kalai vanan]

Can we use same refrigerant for both air conditioner and refrigerator?

 

[Rippetherocker]

Can we use same refrigerant for both air conditioner and refrigerator?

You can but it is not advisable. Systems are designed keeping the refrigerant properties in mind. Their heat of vaporization, specific heat etc.
Remember a fridge cools to a much lesser temp. Than an AC.
unfortunately I'm unfimilar with domestic units