This episode marks the second fight the Ricardos and the Mertzes have over a major appliance. They fight over television sets in the episode, "The Courtroom."
This is the episode where Ricky says for the first time, "Honey, I'm home!"
When Ethel closes her new (Lucy's old) washing machine, the string that stage hands use to lift the lid can be clearly seen.
Although Fred and Ethel's living room is seen in many episodes throughout the series, this marks the first, and only, time that the Mertz' kitchen is seen. The Mertzes bedroom was only seen once in the series as well, in the Season 2 episode entitled, "Vacation from Marriage." This episode is also the only time that the back porch connecting the Mertzes and the Ricardos' apartments is seen.
In this episode, the Mertzes beg to buy the Ricardo's old washing machine as theirs is old enough to be in the Smithsonian, yet just a few episodes earlier (Sales Resistance) Fred tells Ethel to come and see her new Handy Dandy washing machine.