It's cooler in Alaska, maybe (12)
I believe the answer is:
refrigerator
'it's cooler' is the definition.
(I've seen this before)
I don't understand how the remainder of the clue works.
Can you help me to learn more?
(Other definitions for refrigerator that I've seen before include "Chilled compartment" , "Chilling appliance" , "Icebox" , "Chamber maintaining low internal temperature" , "Cooler" .)