What kind of freon is used for freezer?

Freezers typically use refrigerants such as R-134a or R-600a (isobutane). R-134a has been a common choice due to its efficiency and lower environmental impact compared to older refrigerants like R-12. However, R-600a is gaining popularity as a more eco-friendly alternative. It's important to check the specifications of your freezer to determine the appropriate refrigerant type.