Too much laundry
Your washer and dryer can do a lot, but overstuffing tends to cause bigger problems than forcing you to do a second load of laundry. Overloading the machine means the washer can’t clean your clothes properly, and the dryer won’t be able to generate air flow to dry clothes evenly.
Plus, overloading can lead breakdowns. Not only do heavy loads strain the drum belt and bearings, but they can cause the motor to overheat and burn out. Check the manufacturer’s suggestions for your particular model’s capacity and consider taking big items like comforters to the dry cleaner or laundromat.