Install water-saving showerheads in your home. Wrap your water heater with a water heater blanket , especially if it's in an unheated area. Wrap the tank and pipes for additional savings. Keep swimming pool cleaning and heating equipment clean and lubricated. Reduce pool water temperature and the number of months you heat your pool.
Pool covers save energy and money.
Recycle the older unit. Have your heating and cooling ducts tested for air leakage . Make any necessary repairs. You can save more if you also insulate walls, floors and duct work. When replacing old windows buy high performance ones .