A white Philco set can be glimpsed in "Candy" ('68).
The mother-in-law in "The Burning Bed" had white Maytags and a box of Fab.
"Abby," a very rare blaxploitatoin version of "The Exorcist," features an early '60s Kenmore set, with the washer and dryer at right angles from each other.
The Canadian film "They Came from Within" has a scene in the laundry room of an apartment building, stocked with '70s Maytag and GE coin-ops. A woman comes in with clothes and a little plastic bag of detergent, loads up a Maytag, and starts it up.