The washer drier is located in the boiler room.
A subterranean boiler room with access via a flight of stone steps leading down alongside the north wall of the vestry.
There was indoor plumbing, including tubs with running hot water, a boiler room in the basement and even an intercom system.
Finding all the pumpkins is a pain, but you can still score your bonus by biding your time; wait until you get into the boiler room with Gary, and you'll find all the un-kicked pumpkins from earlier stored there.