When Andy and Aunt Bee are on the porch with the freezer in the evening and it starts sparking, it is sparking directly behind and above the freezer. In the shot of the porch the next morning, there is no electric plug or, for that matter, anything in the area where the sparking occurred. The outlet that the freezer is plugged into is to the right of the freezer.
In this episode, the Taylors have a back porch. However, in the season 3 episode, "Mr. McBevee", there is no back porch. The back door opens to the back yard.
Hanging on coat hooks on the Taylors' back porch wall, next to the old freezer, is a well-used and heavily paint-soiled fedora-style hat and an old painting shirt or smock. They are there in the late evening when Aunt Bee comes clean to Andy about the 150 pounds of beef in the freezer. Then, early the next morning, when Andy discovers Aunt Bee sitting on the porch minding the old freezer, the two items on the wall have become a perfectly clean baseball cap and jacket.
When Andy walks into the kitchen at the beginning of the episode, he says, "Listen to them locusts", but the sound from outside is made by cicadas, not locusts.
When Gomer is trying to fix the freezer, it springs a leak and he starts to choke from inhaling it. He says, "It's anti-freeze or something." The leak is actually refrigerant, probably freon gas. A freezer would not have anti-freeze in it.
In the scorching heat of summer, everyone but Opie is wearing long sleeves.
At breakfast, after the discussion about Opie's new shoes, Aunt Bee gets up to refill the sugar bowl. She struggles taking a gigantic bag of sugar out of the cupboard, then proceeds to pour directly from the bag into the sugar bowl. Sugar spills all over the table and she says "Oh, I always do that." Aunt Bee is a very sensible woman and also very competent in the kitchen. Instead of "always" spilling sugar out of a huge bag, using a scoop would have made better sense.