My house was built at a time when things were made to last. However, some things are hard to maintain. Hidden appliances, like the kitchen fan, is an appliance that nobody thinks about until it starts making sounds or, in my case, little pieces of dirt rained down when it was turned on. I’m pretty sure it hasn’t been cleaned since it was installed 65 years ago. The entire motor housing and duct was covered with a thick layer of grease and dirt. It was time for some appliance maintenance.
The fan manufacturer, NuTone - best known for making doorbells - made fans primarily for residential homes. My grandmother had one above her kitchen sink that vented out the wall. There was a pull chain to turn it on. I remember her climbing up a stool and straddling the sink to clean the fan. My mom stood behind her the whole time waiting to catch her if she fell. These fans were stout, quiet and worth a bit of money if maintained.