The TCL TRT18T4AW-CA and TRT18T4AL-CA are Garage Ready refrigerators designed to operate in environments with ambient temperatures as low as 3.3 °C (38 °F).

If the room temperature falls below this level, the refrigerator may not cycle as frequently, which can result in the freezer warming up, even if the surrounding environment is below freezing.

For best performance in cold environments, the temperature control should be set to the lowest (coldest) setting. This helps encourage compressor operation and supports optimal freezer performance when ambient temperatures are near the minimum operating limit.