i have a bosch loggix freedom freezer have had it for 7 years and it,s a very good freezer but we keep it in our porch it doesn,t seem particularly hot in there as we have the porch interior door and window open but the temperature is rising so far -10 only it shouid be -21 checked to make sure no dust on back, emptyied rubbish food out of it but i can,t get the temp to stay constant oh and we,ve set internal temp lower doesn,t make any difference.