Air conditioning ducts:
Check for proper insulation.
Install window air conditioners snugly and insulate if necessary.
Shades, awnings, or louvers:
These can reduce the heat that enters a home by up to 80%.
Keep some water refrigerated so you don’t have to run the tap until the water gets cold.
Consider using a commercial car wash.
Replacing an old 3½- to 8-gallon-per-flush toilet with a new 1.28 or less gallon-per-flush high-efficiency model can save thousands of gallons per year. If you would rather not buy a new toilet, you can put a brick or other displacement device in the tank to reduce the amount of water in each flush.
Low-flow shower heads:
Low-flow shower heads deliver 2.5 gallons of water per minute or less. Older shower heads use 5–7 gallons of water per minute.
Each minute of showering represents up to 7 gallons of water. Take shorter showers.
Personal grooming suggestions:
Turn off water as often as possible while shaving, brushing teeth, washing your face or hands, and washing the dishes. These tips can save 70 gallons per month or more.
Home leak inspections:
Check under all sinks inside the home for drips, leaks, wet spots, or bowing of wood.
Drop a teaspoon of red or blue food coloring into the tank. If color appears in the bowl after 15 minutes, have the flapper valve replaced.
Washing machines and dishwashers:
High-efficiency models can use half the water and energy that a traditional washer does. Run full loads of laundry or dishes as often as possible.