Cool game! I liked it a lot. I thought the gameplay might've been a bit too reliant on pausing and loading then unloading a spare washing machine to refresh the timers. While it made sense from a balancing standpoint, it made the later levels a lot slower and a bit more repetitive. I think not allowing players to load while paused, but giving less items of clothes at a time could be one alternative to keep it balanced.
That being said, great game! I love the direction you went with the theme, and it was fun trying to optimize the upgrades. Well done!