Seeking refrigerator tips... in AZ and heat is hampering...

Many times these fridges are not installed correctly to begin with. The specs call for no more than a certain space in front of the cooling fins, this is so that as air moves up it actually goes thru the fins. If the space it too large then air goes past the fins and does not cool them enough. I have added a deflector to mine that forces air closer to the fins. And if is really hot I will set a fan pointing towards the bottom and remove both upper and lower vent covers. Shade is a must as well.