Clean the Filters
Both your washer and your dryer have filters.  While most people will clean the dryer lint filter after each load, they often neglect the washer filter.  Clogged washer filters mean that your washer will need to work harder and use more energy.  You can reduce your energy costs simply by cleaning these filters on a regular basis.

Less Drying Time
Most people pick a time on the dryer timer and just let it run.  The truth is that most loads are dry long before the time is up.  Do some experimenting to figure out the exact amount of time you need to dry an average load and don’t turn the timer past that.  This way you won’t waste energy on clothes that are already dry.

Hang Your Clothes
You can save lots of money on your utility costs by placing your clothes on a line to dry.  Drying your clothes on a line outside in the summer also helps to keep your home cool as you don’t have the heat from the dryer.  An added advantage is that fresh smell that only line drying can provide.