Washers, dryers and dishwashers have filters that prevent hoses from getting clogged. If they aren't cleaned out, dishwashers can overflow, washers can stop draining properly and dryers may catch fire.
Plus, clean filters put less stress on the parts of an appliance, making them last longer. Be sure to locate the filters on your units and clean them out on every load.
When you're using your large appliances, keep the doors closed as much as possible.
Opening an oven door can release around 25 degrees F of heat, according to the California Energy Commission. So your oven has to work harder to heat back up again. The fluctuation of heat can also prevent baked goods from rising.