National Grid
Water Heating
  • To save on both water heating and water, install a low-flow showerhead in your bathroom(s). Easily installed with a wrench or pliers, a low-flow showerhead can cut water use as much as 50 percent and still feel great.
  • Also attach low-flow aerators to kitchen and bathroom faucets. For a family of four, this can save up to 8,500 gallons of water a year. Aerators allow the faucet to flow stronger while actually using much less water.
  • Avoid running water continuously while doing dishes, washing up, brushing teeth or shaving. Try filling up the sink and using a stopper instead.
  • Wrap the hot water pipes coming out of your water heater with insulation. Wrap those pipes nearest the heater first for greatest savings.
  • Set the thermostat to 120°F or less for normal use, and lower the setting whenever you will be away from home for extended periods. For every 10° you set back your water heater temperature, you cut energy use 3 to 5 percent. (Note: Some dishwashers may require a higher minimum temperature setting. Check your owner's manual.)
  • Most newer water heaters are well-insulated. However, if the side of your water heater feels warm near the top, you can cut heat loss by installing a water heater insulation blanket. (First, check your owner's manual to make sure that this step won't void the manufacturer's warranty. If the warranty period has expired, this is not a problem.) Make sure to use the appropriate type blanket for your water heater, whether it's electric, gas or oil. Follow the manufacturer's installation instructions carefully.