Distilled water has no minerals to build up on appliances.
Use it in your steam iron to prevent that clean-up job. Cleaning the oven is probably one of the dirtiest, least-liked jobs in the house. The commercial cleaners are harsh on the skin, eyes and lungs. The job isn't any more fun with non-toxic cleaners, but it's a lot safer. When grease is allowed to build up, it bakes on hard.