A refrigeration unit (10) includes a cabinet (12), a door (20) coupled to the cabinet (12), at least one gasket (22) coupled to the door (20), and a heat loop conduit (24). The cabinet (12) includes a front perimeter (14) that surrounds an opening (16) to a storage compartment (18) within the cabinet (12). The door (20) is operable between an open position to provide access to the storage compartment (18) and a closed position to conceal the opening (16) to the storage compartment (18). The at least one gasket (22) is configured to be compressed between the door (20) and the front perimeter (14) in the closed position of the door (20). The heat loop conduit (24) has a first conduit portion (26) that extends around a majority of the opening (16) along the front perimeter (14) of the cabinet (12) and a second conduit portion (28) that extends around the majority of the opening (16) along the front perimeter (14) of the cabinet (12).